biology experiment ideas high school

10 Awesome Biology Experiments Ideas For High School Aspirants

Science is no fun without practical experiments. Unlike middle school, where you limit your study and inquiry of science to the theoretical realm, high school has a different scene. Experiments are a major part of studying science in high school, and biology all the more so. Biology is fascinating. It makes us wonder at the complex system which makes the human body function efficiently; it has all the answers to the questions of death, sickness, and life. But we must admit that only the theoretical explanation of these complex concepts never suffices to give us a satisfactory understanding. That is where practical experiments come to the rescue. 

Therefore, this post will cover 10 fascinating biology experiments that high school students can do independently, even at home. 

Cool Experiments To Do In Your Bio Lab

While many are intrigued by art competitions , others are moved toward robotic classes. However, in a bunch of students, there are a few who love biology experiments. Hence, here are a few experiments that can be tried out by high schoolers if biology is the subject that piques their interest:

1. Extract DNA

Everyone knows DNA is the agent behind our hereditary traits. Residing in the cell’s nucleus, it guides major aspects of our physiognomy. Usually, the DNA is not visible to the naked eye, you need a powerful microscope to view it, but with this experiment, you can have a fine look at the DNA with this DNA extracting experiment. 

Basically, you will be forcefully breaking down some cell walls of the extracted cells by dipping it into your extraction solution. Adding 35ml of dish soap and 5gm of salt in 240 ml of water will give you the extraction solution. Dip and mix some mashed banana slices into the extract, leading the DNA to head out into the solution. Then we will use some alcohol to force the DNA to join up into large chains that we can actually see. You will get a fluffy white substance, the DNA that is visible to the naked eye, made possible by this extraction experiment. 

2. Dissect A Flower

Everyone has theoretically seen and known the different parts of a flower. Some exceptional students might even have that picture inscribed in their memory. Very well if you have that, but the hands-on experience of viewing those parts with your own eyes can definitely beat any other theoretical picture-viewing experience. 

So, first thing first, go out and choose a bloom. Observe the flower and point out the petals, stamen, and pistil. Use a razor to remove the stamen and observe the Filament and Anther under magnifying glasses. Wipe out some pollen grains and have a detailed look at it under the microscope while you are at them. Next up, remove the pistil and observe your flower’s ovary, stigma, and style with a magnifying glass. This is the simplest yet a fascinating experiment on the list. 

3. Raise A Butterfly

Again, we have the theoretical knowledge of the life cycle of a butterfly. Yet it takes us by surprise and wonder when we see the process through our own eyes. So, get ready to be fascinated by a butterfly’s journey from an ugly worm to a colourful butterfly. 

The process is easy. You get a caterpillar, observe it daily, and note the changes. The changes will be as precise as your books have always told you. First off, a butterfly lays an egg and a caterpillar hatches from the egg. The caterpillar eats and grows, shedding its skin several times to accommodate its growing belly. Once the caterpillar reaches the right size, it sheds its skin for the last time, revealing the chrysalis, which quickly hardens. Inside the chrysalis, the caterpillar goes through metamorphosis and changes into a butterfly. At the right time, the butterfly breaks out. It hangs onto the chrysalis for a bit, just until its wings dry out and harden. Then, it flies off in search of nectar. 

So, in the end, you will be sitting back and enjoying the release of the butterfly you raised with your own very hands.   

4. Frog Dissection

Dissecting a frog is one of those lab activities that fascinate and chill you simultaneously. But before you start with the dissection, make sure you take note of all the outer organs like the skin, legs, head, digits, and urinary outlet (cloaca) of the specimen. 

You will need a good scalpel, pins, and a dissection tray to cut the frog. After these things are in place, you are all set to perform the three significant incisions on the specimen. Start by cutting from the jaw to down between the legs, then make two horizontal incisions, one above the neck and the other towards the bottom of its legs. At this point, you will start seeing some organs residing in the abdominal cavity. Repeat the same incision on the frog’s abdomen to open the abdominal cavity. Observe the heart, and identify the major organs like the liver, stomach, intestines, and oviducts. 

This experiment will definitely leave you amazed at the complex system of nerves, muscles, and bloods that functions interdependently to sustain a living being. However, this experiment should be done in front of teachers and professors in the lab.

5. Diversity Among Plant Samples

Another simple biology experiment involves going into your natural environment, such as a local park, to observe diversity among plant samples. To make the experiment more detailed, students can rub collected samples on filter paper to observe which plants present which colors. 

Teens can work to find out why certain plants present certain colors. They can also dissect the flowers of the plants and paste the dissected parts of the flowers in their observation notebooks to make a note of the differences between the flowers of the different species of plants. 

6. Yeast Experiment

Another simple and easy experiment on the list for high schoolers is the yeaThis experiment is easy because it only involves taking out four different food samples on different plates and a long-time observation of the mold that grows on each sample. 

Studying mold is an excellent way to learn more about ecology and biology. This experiment compares how fast mold grows on different types of foods kept in many American homes. Some of the foods are generally kept in refrigerators to extend shelf life, while others are commonly stored at room temperature. This experiment shows that certain foods grow mold faster than others, which is one reason why these foods are often kept in the refrigerator. 

Going a step further, the students can also do research inspired by this experiment and find answers to questions such as: what makes a mold grow? And how does one prevent their growth?

7. Look at cell division under the microscope

Cheap digital microscopes with high magnification power that can be directly connected to your laptop or smartphone are easily available in the market nowadays. You can make use of such microscopes to observe every little thing you find at home or outdoors.  

A great experiment to do at home with a microscope is to look at how cells divide in different organisms. One of the easiest is baker’s yeast. With a magnification of at least 400x, you can start discerning the shapes of individual yeast cells in water. You will notice that some of them have little buds on them, which is the way they grow and divide. 

Taking it one step further, you can also take the tip of the onion’s root and observe them to study the different stages of mitosis as well. 

8. Ferment your own food

Bacteria and yeast are practically geniuses in the art of fermentation. Humans have been taking their help for the longest time to make food items such as bread and alcohol. And it is quite easy to ferment your own food at home. 

In most cases, you need a starter culture of the bacteria or fungi that make the food you will be fermenting. You can get it from someone already doing fermentation at home or buy it online. Many options range from kombucha, kefir, or mead to yogurt, cheese, kimchi, and sauerkraut. Each fermented food has different requirements, so ensure you have everything you need before starting. After you have everything in place, you are ready to experiment with this fermented food and its varied tastes. 

9. Examining Fingerprints

The tips of each finger of your hand have a combination of lines and features in distinctive patterns that we call fingerprints. Fingerprints are one of the fascinating features of the human body. We have been told that each of us is unique in our light, and our fingerprints prove it to be so. You can analyze your own uniqueness by analyzing your very own fingerprints in this project. All you need is paper, magnifying glass, and stamp ink.

First, you need to press a finger against the ink pad and then against a piece of paper. Then, use the magnifying glass to examine the fingerprints and look for arches, whorls, and loops. You can record your finding on your paper. And then take a friend’s fingerprints to analyze the differences. 

10. Create A Fall Leaf (Or Signs Of Spring) Journal

Biology is all about studying life and learning more about our natural surroundings. A Fall Leaf journal or a Signs of Spring journal will help your students learn about the trees and bushes that are in your area. This experiment is easy, needs minimal effort, and is fun and exciting as well. 

Things To Remember

Science experiments are interesting by nature, but this aspect of their nature shouldn’t keep us from maintaining our share of vigilant caution. Science experiments could sometimes wreak havoc if we do not take enough caution while doing these experiments. Therefore, in order to prevent yourself from ruining your own experiments, you have to follow some safety instructions while doing these experiments. 

Wear covered shoes and long pants while performing any experiment, and keep your hair up so it can’t fall into your experiment or a flame. Don’t carelessly sniff or taste any chemicals; don’t just experiment with everything you get your hands on. Make sure you have your full attention in the experiments, and handle everything with care, especially sharp objects like knives or objects that could produce a flame. And at the end of your experiment, you should also know how to dispose of the waste properly. 

In the end of it, what matters the most is that we genuinely imbibe the lessons that we learn from our experiments. These biology experiments will get you further into the fascinating world of biology. If you want to further your knowledge, you may also visit science labs, perform science experiments in the lab, attend workshops and seminars, and meet people and learn from their experiences. 

Keep learning, keep experimenting, and keep enjoying the process of learning. 

Sananda Bhattacharya, Chief Editor of TheHighSchooler, is dedicated to enhancing operations and growth. With degrees in Literature and Asian Studies from Presidency University, Kolkata, she leverages her educational and innovative background to shape TheHighSchooler into a pivotal resource hub. Providing valuable insights, practical activities, and guidance on school life, graduation, scholarships, and more, Sananda’s leadership enriches the journey of high school students.

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20 Fun and Interesting Biology Experiments for High School 

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Unlike science in middle school, high school biology is a hands-on endeavor. Experiments are a standard part of biology courses, whether they are part of a controlled laboratory class, science fair, or individual student projects. Explore a few fascinating high school biology experiments; and discover ideas for simple and easy biology experiments to incorporate into your curriculum.

Examples of Biology Experiments for High School

Whether you are looking for a science fair project or need to create a project for a class assignment, there are numerous biology projects for teens.

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Frog Dissection

Dissecting a frog is a quintessential part of high school biology. If possible, try to get both female and male specimens for your class so students can see the eggs and compare the insides to the male frog.

Flower Dissection

High schoolers can get a bit squirmy about frog dissection. Have a flower dissection instead. The teens can find and label the female and male parts of the flower. It can be fun for high schoolers to check out flower intricacies under a microscope.

Diversity Among Plant Samples

Another simple biology experiment involves going into your natural environment, such as a local park, to observe diversity among plant samples. To make the experiment more detailed, students can rub collected samples on filter paper to observe which plants present which colors . Teens can work to find out why certain plants present certain colors.

Phototropism

It can be enlightening to show kids how phototropism affects plants. They can set up an experiment by using different materials to affect light. They can see how affecting the light affects the growth of the plant.

Water From Common Sources

Water is everywhere. Unfortunately, water contains numerous elements too. A great experiment is collecting water samples from various sources and viewing them under a microscope. Students can then compare their results and attempt to postulate why a given water source would present more organisms than another would.

Yeast Experiment

Another experiment involves taking a piece of bread to monitor the molds that grow over a period of two weeks.

Taste Perception

Everyone has their own taste. Literally! Some people like sour things while others like sweet. Find out if everyone perceives taste the same way and has the same threshold for taste by doing an in-class experiment.

Disinfectant Effectiveness

Ever wonder how effective hand sanitizer is at killing bacteria? Test it! Grow bacteria in a Petri dish along with paper soaked in peroxide, white vinegar, rubbing alcohol, etc. Find out how each one of them works to inhibit bacteria growth.

Pea Plant Genetics

Students can recreate Mendel's genetic pea plant experiments . By growing pea plants and comparing their phenotypes, students can determine each parent plant's genotype.

Examining Fingerprints

Fingerprints are pretty amazing features on the human body. Not only can you use them to open your phone, but each one is unique . Put your fingerprint on paper and examine the different aspects of the lines and arches on your fingers. Compare fingerprints among everyone in class.

Comparing Animal and Plant Cells

To better understand animal and plant cells, students can compare cells from their cheeks to cells from an onion. Just stain the cells with iodine or another dye to better see the cell structures under a microscope.

Creating a DNA model is a great way to help students understand the structure and function of DNA in genetics. Students can use candy, string, and toothpicks to develop a fairly realistic model of the double helix structure.

Water Bottle Germs

Many people refill their water bottles in high school. But do they add germs or bacteria to the bottle? Is refilling a disposable water bottle safe? Have students take swabs of the water bottles they use and look for bacteria around the lid or on the bottle.

Testing Hair

Teens use a lot of hair products. But do they truly work? Have teens in your class take a few samples of their hair. See what happens to the hair when common hair products are added.

Water Cycle

Understanding the water cycle isn't hard. But teens can look at it firsthand by creating a water cycle experiment. Just have them fill a baggie with water and tape it to a window. They will watch evaporation, condensation, and precipitation in action.

Closed Ecosystem Bottle

It can be hard for students to imagine something having its own ecosystem. However, you can use a plastic bottle to create a closed ecosystem.

Field Survey Biology Experiment

This experiment is great because it is cheap, easy, and you can do it in a variety of areas around your school or send students home with it. The goal is to observe the surrounding area over time and monitor the samples that you collect.

Materials You'll Need

For this experiment, you need to grab:

• Jar or baggies to collect samples
• Stakes and string or cones help mark an area
• Paper or journals for taking notes
• Slides, slide covers, and a microscope

Observation Instructions

Take note that you will observe your area for several months, so choose an area that is easy to re-mark or where you can leave the markings up, so you return to the same designated area each time.

• Have students choose one spot to observe. The spot should be no more than two to three feet square.
• Do you see evidence of animals? (Look for prints, scat or guano, fur, owl pellets, etc.)
• What plant life do you see? (Look for moss, lichen, weeds, and other plants).
• What fungus do you see? (Look for mushrooms and other fungal growth).
• What insects do you see? (Encourage students to look specifically for relationships here - such as connecting mosquitos with water or bees with flowers or a hive).

Sampling and Classroom Instructions

Bring the research back into the classroom by following these instructions.

• Guide students to make connections and note relationships in their marked area. Have them inventory the area and draw a crude map of where everything is.
• If possible, have students use tweezers and gently take samples of soil, fungus, moss, plant life, insects, etc.
• pH value of soil or water
• Microorganisms in water
• Plant cells under a microscope
• Comparative structure of flowers you find
• Require students to record everything in their own journal or interactive notebook.

Teacher tip: Set up stations in the classroom for viewing, dissecting, drawing, testing pH, etc. This will allow students some choice in how they proceed with examining their specimens.

Testing for Bacteria

Have students see where the most bacteria are lurking. This experiment is great if you want a lab that has guaranteed results. There is always some kind of bacteria lurking somewhere, just waiting to grow in a student's Petri dish.

These are the materials you are going to need to have on hand.

• Prepared Petri dishes, three per student
• Sterile swabs
• Painter's tape
• Scotch tape
• Permanent Marker
• Graph paper

Material notes : You can also purchase sterile Petri dishes and agar separately; however, it is much more likely students will contaminate the plate before they swab.

Preparing Your Petri Dishes

Prepping your Petri dishes is an essential part of the experiment.

• Before opening any materials, have students identify three places (but in one physical location such as at home or at school) that they are going to swab for bacteria. Encourage them to hypothesize about which place they think will grow the most bacteria.
• Using the Petri dish, trace three circles on the graph paper and cut it out.
• In pencil, draw a line to denote the 'top' of the circle. It doesn't matter where you draw the line, but you will need something to show you how your Petri dish is oriented so you can be sure you're tracking the same colony each time you observe.
• On the back of the graph paper circle, note the location where you will take the swab, as well as the date you are taking the swabs. Do this for all three Petri dishes you have.

Collecting Samples

Have students bring their unopened sterile swabs and closed Petri dishes to the site. Carefully, they should:

• Set the Petri dish down on a flat surface.
• Unwrap the swab.
• Swipe the swab across the area they suspect has bacteria.
• Lift the lid, gently wipe the used swab across the agar, and close the lid, carefully but quickly.

Hint: Sometimes, it's helpful to tape the Petri dish shut so that the Petri dish doesn't accidentally lose its lid.

Evaluating Results

Now that you've swabbed the areas, it's all about the results.

• Have students draw Petri-dish-sized circles in their lab books or on separate graph paper. Draw one week's worth of Petri dishes for each dish the student has.
• As the colonies start to grow, have students draw the size in their notebooks, making daily observations. If they cannot observe daily, have them observe on the same day(s) over a month.
• They should also be recording the color and other notable features of their bacteria colonies in their lab books.
• At the end, the students should write a conclusion of their study.

The Effect of Light on Growth

In this lab, students investigate how light affects plant growth. Students may use any plants, but cress will grow more quickly, so your students can get results faster.

Gather up your materials.

• Styrofoam cup or bowl
• Potting soil

Instructions

With your materials at the ready, it's time to start your experiment.

• On Day 1 - plant seeds in the soil in the cups.
• Label the cups according to the light you're going to use. You can compare sunlight vs. complete darkness, or you can compare several types of light.
• On each day after the initial day, take a picture of each cup and try to measure the growth, if any.
• For your lab entries, measure the sprouts, and note color and shape characteristics.

Planaria Regeneration

In this lab, students watch the rate at which planaria regenerates and test whether how you cut the planaria makes a difference as to how they grow back.

To conduct this experiment, you want to grab.

• 9 planarias
• 3 small plastic Petri dishes
• 1 large plastic Petri dish
• 1 plastic pipet
• 1 magnifying glass
• 1 plastic coverslip
• Spring water
• Paper towels
• Ice pack(optional)

Setup Instructions

Getting the setup right is half the battle when it comes to creating fun and interesting biology experiments for high schoolers.

• Start by numbering the three small Petri dishes to ensure nothing gets confused later.
• Using the pipet, move a planarian into the large Petri dish.
• At this point, you may want to try to set the Petri dish on an ice pack for a few minutes. This isn't totally necessary, but it will slow the planarian down to make it easier to cut.
• Right behind the head
• Right in the middle
• Right towards the tail
• Use the pipet to gently transfer each segment to a new Petri dish (with spring water).
• Repeat the steps with all remaining worm segments.
• Every day, observe the planaria. Regeneration will be considered 'complete' when the photoreceptors (the black dots that look like eyes on the planarian's head) appear.

Scientific Method and High School Biology Experiments

Much of high school biology is focused on instilling the elements of science in students. The scientific method is one of these main focuses. The method prompts participants in science to be investigators and to come up with a guess about what will happen in a given experiment, called a hypothesis. The point of the experiment is then to either prove the hypothesis correct through the experiment or prove it incorrect. This prompts teens to get involved in the scientific method while teaching other scientific skills, such as:

• The ability to make a rational estimate based on present factors and knowledge
• Close detail and monitoring skills
• The possibility of being wrong and how to move past that if it turns out to be the case
• Quick thinking skills

As much fun as biology experiments can be, there is an educational component spearheading the experiment.

Fun and Interesting High School Biology Experiments

For teens, high school biology can be fun. Finding the right experiment can help biology pop off the page and become more than just another required course of study. Who knows? Perhaps your student will even be prompted to enter a science fair or a career rooted in science?

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70 Best High School Science Fair Projects in Every Subject

Fire up the Bunsen burners!

The cool thing about high school science fair projects is that kids are old enough to tackle some pretty amazing concepts. Some science experiments for high school are just advanced versions of simpler projects they did when they were younger, with detailed calculations or fewer instructions. Other projects involve fire, chemicals, or other materials they couldn’t use before.

Note: Some of these projects were written as classroom labs but can be adapted to become science fair projects too. Just consider variables that you can change up, like materials or other parameters. That changes a classroom activity into a true scientific method experiment!

To make it easier to find the right high school science fair project idea for you, we’ve rated all the projects by difficulty and the materials needed:

Difficulty:

• Easy: Low or no-prep experiments you can do pretty much anytime
• Medium: These take a little more setup or a longer time to complete
• Advanced: Experiments like these take a fairly big commitment of time or effort
• Basic: Simple items you probably already have around the house
• Medium: Items that you might not already have but are easy to get your hands on
• Advanced: These require specialized or more expensive supplies to complete
• Biology and Life Sciences High School Science Fair Projects

Chemistry High School Science Fair Projects

Physics high school science fair projects, engineering high school stem fair projects, biology and life science high school science fair projects.

Explore the living world with these biology science project ideas, learning more about plants, animals, the environment, and much more.

Extract DNA from an onion

Difficulty: Medium / Materials: Medium

You don’t need a lot of supplies to perform this experiment, but it’s impressive nonetheless. Turn this into a science fair project by trying it with other fruits and vegetables too.

Re-create Mendel’s pea plant experiment

Difficulty: Medium / Materials: Medium ADVERTISEMENT

Gregor Mendel’s pea plant experiments were some of the first to explore inherited traits and genetics. Try your own cross-pollination experiments with fast-growing plants like peas or beans.

Make plants move with light

By this age, kids know that many plants move toward sunlight, a process known as phototropism. So high school science fair projects on this topic need to introduce variables into the process, like covering seedling parts with different materials to see the effects.

Test the 5-second rule

We’d all like to know the answer to this one: Is it really safe to eat food you’ve dropped on the floor? Design and conduct an experiment to find out (although we think we might already know the answer).

Find out if color affects taste

Just how interlinked are all our senses? Does the sight of food affect how it tastes? Find out with a fun food science fair project like this one!

See the effects of antibiotics on bacteria

Difficulty: Medium / Materials: Advanced

Bacteria can be divided into two groups: gram-positive and gram-negative. In this experiment, students first determine the two groups, then try the effects of various antibiotics on them. You can get a gram stain kit , bacillus cereus and rhodospirillum rubrum cultures, and antibiotic discs from Home Science Tools.

Learn more: Antibiotics Project at Home Science Tools

Witness the carbon cycle in action

Experiment with the effects of light on the carbon cycle. Make this science fair project even more interesting by adding some small aquatic animals like snails or fish into the mix.

Learn more: Carbon Cycle at Science Lessons That Rock

Look for cell mitosis in an onion

Cell mitosis (division) is actually easy to see in action when you look at onion root tips under a microscope. Students will be amazed to see science theory become science reality right before their eyes. Adapt this lab into a high school science fair project by applying the process to other organisms too.

Test the effects of disinfectants

Grow bacteria in a petri dish along with paper disks soaked in various antiseptics and disinfectants. You’ll be able to see which ones effectively inhibit bacteria growth.

Learn more: Effectiveness of Antiseptics and Disinfectants at Amy Brown Science

Pit hydroponics against soil

Growing vegetables without soil (hydroponics) is a popular trend, allowing people to garden just about anywhere.

More Life Sciences and Biology Science Fair Projects for High School

Use these questions and ideas to design your own experiment:

• Explore ways to prevent soil erosion.
• What are the most accurate methods of predicting various weather patterns?
• Try out various fertilization methods to find the best and safest way to increase crop yield.
• What’s the best way to prevent mold growth on food for long-term storage?
• Does exposure to smoke or other air pollutants affect plant growth?
• Compare the chemical and/or bacterial content of various water sources (bottled, tap, spring, well water, etc.).
• Explore ways to clean up after an oil spill on land or water.
• Conduct a wildlife field survey in a given area and compare it to results from previous surveys.
• Find a new use for plastic bottles or bags to keep them out of landfills.
• Devise a way to desalinate seawater and make it safe to drink.

Bunsen burners, beakers and test tubes, and the possibility of (controlled) explosions? No wonder chemistry is such a popular topic for high school science fair projects!

Break apart covalent bonds

Break the covalent bond of H 2 O into H and O with this simple experiment. You only need simple supplies for this one. Turn it into a science fair project by changing up the variables—does the temperature of the water matter? What happens if you try this with other liquids?

Learn more: Covalent Bonds at Teaching Without Chairs

Measure the calories in various foods

Are the calorie counts on your favorite snacks accurate? Build your own calorimeter and find out! This kit from Home Science Tools has all the supplies you’ll need.

Detect latent fingerprints

Forensic science is engrossing and can lead to important career opportunities too. Explore the chemistry needed to detect latent (invisible) fingerprints, just like they do for crime scenes!

Learn more: Fingerprints Project at Hub Pages

Use Alka-Seltzer to explore reaction rate

Difficulty: Easy / Materials: Easy

Tweak this basic concept to create a variety of high school chemistry science fair projects. Change the temperature, surface area, pressure, and more to see how reaction rates change.

Determine whether sports drinks provide more electrolytes than OJ

Are those pricey sports drinks really worth it? Try this experiment to find out. You’ll need some special equipment for this one; buy a complete kit at Home Science Tools .

Turn flames into a rainbow

You’ll need to get your hands on a few different chemicals for this experiment, but the wow factor will make it worth the effort! Make it a science project by seeing if different materials, air temperature, or other factors change the results.

Discover the size of a mole

The mole is a key concept in chemistry, so it’s important to ensure students really understand it. This experiment uses simple materials like salt and chalk to make an abstract concept more concrete. Make it a project by applying the same procedure to a variety of substances, or determining whether outside variables have an effect on the results.

Learn more: How Big Is a Mole? at Amy Brown Science

Cook up candy to learn mole and molecule calculations

This edible experiment lets students make their own peppermint hard candy while they calculate mass, moles, molecules, and formula weights. Tweak the formulas to create different types of candy and make this into a sweet science fair project!

Learn more: Candy Chemistry at Dunigan Science on TpT

Make soap to understand saponification

Take a closer look at an everyday item: soap! Use oils and other ingredients to make your own soap, learning about esters and saponification. Tinker with the formula to find one that fits a particular set of parameters.

Learn more: Saponification at Chemistry Solutions on TpT

Uncover the secrets of evaporation

Explore the factors that affect evaporation, then come up with ways to slow them down or speed them up for a simple science fair project.

Learn more: Evaporation at Science Projects

More Chemistry Science Fair Projects for High School

These questions and ideas can spark ideas for a unique experiment:

• Compare the properties of sugar and artificial sweeteners.
• Explore the impact of temperature, concentration, and seeding on crystal growth.
• Test various antacids on the market to find the most effective product.
• What is the optimum temperature for yeast production when baking bread from scratch?
• Compare the vitamin C content of various fruits and vegetables.
• How does temperature affect enzyme-catalyzed reactions?
• Investigate the effects of pH on an acid-base chemical reaction.
• Devise a new natural way to test pH levels (such as cabbage leaves).
• What’s the best way to slow down metal oxidation (the form of rust)?
• How do changes in ingredients and method affect the results of a baking recipe?

When you think of physics science projects for high school, the first thing that comes to mind is probably the classic build-a-bridge. But there are plenty of other ways for teens to get hands-on with physics concepts. Here are some to try.

Remove the air in a DIY vacuum chamber

You can use a vacuum chamber to do lots of cool high school science fair projects, but a ready-made one can be expensive. Try this project to make your own with basic supplies.

Learn more: Vacuum Chamber at Instructables

Put together a mini Tesla coil

Looking for a simple but showy high school science fair project? Build your own mini Tesla coil and wow the crowd!

Boil water in a paper cup

Logic tells us we shouldn’t set a paper cup over a heat source, right? Yet it’s actually possible to boil water in a paper cup without burning the cup up! Learn about heat transfer and thermal conductivity with this experiment. Go deeper by trying other liquids like honey to see what happens.

Build a better light bulb

Emulate Edison and build your own simple light bulb. You can turn this into a science fair project by experimenting with different types of materials for filaments.

Measure the speed of light—with your microwave

Grab an egg and head to your microwave for this surprisingly simple experiment. By measuring the distance between cooked portions of egg whites, you’ll be able to calculate the wavelength of the microwaves in your oven and, in turn, the speed of light.

Generate a Lichtenberg figure

See electricity in action when you generate and capture a Lichtenberg figure with polyethylene sheets, wood, or even acrylic and toner. Change the electrical intensity and materials to see what types of patterns you can create.

Learn more: Lichtenberg Figure at Science Notes

Explore the power of friction with sticky note pads

Difficulty: Medium / Materials: Basic

Ever try to pull a piece of paper out of the middle of a big stack? It’s harder than you think it would be! That’s due to the power of friction. In this experiment, students interleave the sheets of two sticky note pads, then measure how much weight it takes to pull them apart. The results are astonishing!

Build a cloud chamber to prove background radiation

Ready to dip your toe into particle physics? Learn about background radiation and build a cloud chamber to prove the existence of muons.

Measure the effect of temperature on resistance

This is a popular and classic science fair experiment in physics. You’ll need a few specialized supplies, but they’re pretty easy to find.

Learn more: Temperature and Resistance at Science Project

Launch the best bottle rocket

A basic bottle rocket is pretty easy to build, but it opens the door to lots of different science fair projects. Design a powerful launcher, alter the rocket so it flies higher or farther, or use only recycled materials for your flyer.

More Physics Science Fair Projects for High School

Design your own experiment in response to these questions and prompts.

• Determine the most efficient solar panel design and placement.
• What’s the best way to eliminate friction between two objects?
• Explore the best methods of insulating an object against heat loss.
• What effect does temperature have on batteries when stored for long periods of time?
• Test the effects of magnets or electromagnetic fields on plants or other living organisms.
• Determine the best angle and speed of a bat swing in baseball.
• What’s the best way to soundproof an area or reduce noise produced by an item?
• Explore methods for reducing air resistance in automotive design.
• Use the concepts of torque and rotation to perfect a golf swing.
• Compare the strength and durability of various building materials.

Many schools are changing up their science fairs to STEM fairs, to encourage students with an interest in engineering to participate. Many great engineering science fair projects start with a STEM challenge, like those shown here. Use these ideas to spark a full-blown project to build something new and amazing!

Construct a model maglev train

Maglev trains may just be the future of mass transportation. Build a model at home, and explore ways to implement the technology on a wider basis.

Learn more: Maglev Model Train at Supermagnete

Design a more efficient wind turbine

Wind energy is renewable, making it a good solution for the fossil fuel problem. For a smart science fair project, experiment to find the most efficient wind turbine design for a given situation.

Re-create Da Vinci’s flying machine

Da Vinci sketched several models of “flying machines” and hoped to soar through the sky. Do some research into his models and try to reconstruct one of your own.

Learn more: Da Vinci Flying Machine at Student Savvy

Design a heart-rate monitor

Smartwatches are ubiquitous these days, so pretty much anyone can wear a heart-rate monitor on their wrist. But do they work any better than one you can build yourself? Get the specialized items you need like the Arduino LilyPad Board on Amazon.

Race 3D printed cars

3D printers are a marvel of the modern era, and budding engineers should definitely learn to use them. Use Tinkercad or a similar program to design and print race cars that can support a defined weight, then see which can roll the fastest! (No 3D printer in your STEM lab? Check the local library. Many of them have 3D printers available for patrons to use.)

Learn more: 3D Printed Cars at Instructables

Grow veggies in a hydroponic garden

Hydroponics is the gardening wave of the future, making it easy to grow plants anywhere with minimal soil required. For a science fair STEM engineering challenge, design and construct your own hydroponic garden capable of growing vegetables to feed a family. This model is just one possible option.

Learn more: Hydroponics at Instructables

Grab items with a mechanical claw

Delve into robotics with this engineering project. This kit includes all the materials you need, with complete video instructions. Once you’ve built the basic structure, tinker around with the design to improve its strength, accuracy, or other traits.

Learn more: Hydraulic Claw at KiwiCo

Construct a crystal radio

Return to the good old days and build a radio from scratch. This makes a cool science fair project if you experiment with different types of materials for the antenna. It takes some specialized equipment, but fortunately, Home Science Tools has an all-in-one kit for this project.

Learn more: Crystal Radio at Scitoys.com

Build a burglar alarm

The challenge? Set up a system to alert you when someone has broken into your house or classroom. This can take any form students can dream up, and you can customize this STEM high school science experiment for multiple skill levels. Keep it simple with an alarm that makes a sound that can be heard from a specified distance. Or kick it up a notch and require the alarm system to send a notification to a cell phone, like the project at the link.

Learn more: Intruder Alarm at Instructables

Walk across a plastic bottle bridge

Balsa wood bridges are OK, but this plastic bottle bridge is really impressive! In fact, students can build all sorts of structures using the concept detailed at the link. It’s the ultimate upcycled STEM challenge!

Learn more: TrussFab Structures at Instructables

Looking for more science content? Check out the Best Science Websites for Middle and High School .

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7 Fun Biology Experiments for High School

What better way to learn about life’s mysteries than through exciting and fun biology experiments? High school is the perfect time to delve deeper into the world of biology, and I’ve gathered seven fun and educational experiments that will ignite your students’ curiosity and make biology come alive. So, roll up your sleeves, put on your lab coat, and let’s dive into these fun biology experiments!

1. Barf Bag Lab

Topics: cellular respiration, alcoholic fermentation, cellular energy

Photosynthesis and cellular respiration are difficult concepts for students to grasp because they involve molecular interactions that can’t be seen. Bringing these reactions into an observable format is essential for students to comprehend them. Barf bags do just that.

Not only does the name “Barf Bag Lab” catch their attention, but the reaction itself is just gross enough to be quite memorable. Using yeast to demonstrate alcoholic fermentation, students crush sugary cereal to provide a source of glucose. As the bag expands, it may ultimately “barf” its contents onto the lab table. This lab is a great use of scientific processes because variables can be manipulated by changing the type of cereal used. Grab a free Barf Bag Lab Activity from my online store or see more cellular respiration lab experiments in this post .

2. Osmosis Egg Experiment

Topics: semipermeable cell membranes, osmosis, hypertonic, hypotonic, homeostasis

This classic lab provides another opportunity for students to observe the effects of cellular processes that would otherwise be difficult to see. Unlike the previous lab, however, this one involves a little bit of teacher prep work.

By soaking eggs in vinegar for a few days, the shells become soft and can be washed away with a little water. What remains is a semipermeable cell membrane that is easily observed. By deshelling a few eggs, the cell’s response to a variety of solute concentrations can be illustrated. If you’re interested in incorporating this classic experiment into your course, this egg osmosis lab has been vetted by hundreds of high school Biology teachers.

3. Cell Size Diffusion Lab

Topics: cell size, diffusion, cell membrane, surface area to volume ratio

This is a lab that I use as the first of lesson plan in my cell cycle unit , but it also makes a great diffusion lab. I prefer to do this experiment as a demonstration because it involves bleach and knives, which can be a safety hazard in a high school Biology classroom.

By cutting cubes of fresh beets into different sizes, students can practice calculating surface area and volume, which is a skill that helps them understand the necessity of a cell membrane for the diffusion of substances. Each beet cube is then soaked in bleach and students can observe the percentage of the cube’s volume that is reached by the bleach. The visual component of this lab is a great way for students to comprehend the need for efficient nutrient absorption and the reason for cell division.

4. Extracting DNA from Strawberries

Topics: cell structure, DNA, nucleus, cell membrane, histones

This is another classic lab, but one that just can’t be skipped! With a few household ingredients, students can extract long strings of DNA from the nuclei of strawberry cells and scoop it up with a toothpick or skewer. If you want, the DNA can even be preserved in alcohol as a biology souvenir!

At the beginning of my teaching career, I used the split pea extraction lab from Learn Genetics . It’s still a solid lab, but I’ve come to prefer using strawberries over other DNA sources for two reasons: 1) Strawberries are triploid, so the amount of DNA extracted from them is greater and 2) They are easy to smush. Split pea extraction requires a blender to break the cell walls. Since blenders aren’t readily available for every student, it necessitates a demonstration rather than a lab. Some teachers have found success with wheat germ as a DNA source, as well. You can watch a video demonstration of strawberry DNA extraction on my YouTube channel.

5. Natural Selection Lab

Topics: natural selection, mutation, genetic variation, fitness, antibiotic resistance

It’s tough to find labs for natural selection and evolution because these processes usually have to be simulated rather than observed. One of the most popular natural selection labs is the bird beak activity . Students use a variety of materials to simulate finch beaks and learn how beak adaptations cause different species to show niche separation.

Another one of my favorite evolution simulations is a natural selection lab using various household items to simulate antibiotics and bacteria. Antibiotic resistance is a great topic to incorporate into an evolution unit because it is highly relevant to students. Using a variety of pasta shapes to simulate different bacterial species, students use tools like toothpicks and clothespins to act as antibiotics “killing” the bacterial cells. Mutant bacterial cells aren’t able to be picked up by the tools, allowing these new species to flourish as antibiotic-resistant strains. Looking for more evolution labs? Check out my plant cladogram freebie in this post.

6. Candy Radiometric Dating Lab

Topics: fossils, carbon dating, radiometric dating, isotopes, half-life

Using candy is a go-to in my high school courses because it keeps students interested! There are other supplies that can be used for this radiometric dating lab activity, but candy is always well-received in my classes.

Students begin with a designated number of candies with letters on one side (like Skittles, M&Ms, etc) and they shake the candies in a box or bag to simulate radioactive decay. Candies that have flipped represent the daughter atoms. By repeating the shaking and counting of flipped candies, students can create a graph showing the radioactive decay of an isotope. This easily leads to a discussion of half-lives and the radiometric dating of fossils.

7. Greenhouse Effect Experiment

Topics: greenhouse gases, climate change, fossil fuels, carbon dioxide emissions

The greenhouse effect is easy enough to illustrate. Here’s a quick greenhouse effect simulation , if students aren’t familiar. They have likely also observed the greenhouse effect in their own car or a local greenhouse. The effects of carbon dioxide emissions on the greenhouse effect, however, is not something students readily observe. That’s why this simple lab is so clever. Students set up two plastic zipper bags with a cup of water and a thermometer in each bag. Antacid tablets are added to one cup, producing carbon dioxide within that bag. Students then monitor the difference in temperature over a 30-minute period to see how carbon dioxide intensifies the greenhouse effect. For full instructions on this lab including background reading, student instructions, data tables, and comprehension questions, grab this Greenhouse Effect Experiment .

These fun biology experiments will help your students grasp fundamental concepts and nurture their scientific curiosity. Pick one you haven’t tried, gather your lab equipment, and get going!

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High School Biology Experiment Ideas

Science Projects on Dish Detergents

High school level biology covers all aspects of biology, including animals, plant life and humans. That should mean it’s easy to come up with a science fair project or a classroom research project, but the amount of topics sometimes makes it even harder. When you first start researching, you’ll find thousands of ideas and it’s difficult to decide which one is best for your situation. Provided that you know what you want to do and what your teacher or judges are looking for, it’s easy to come up with a great biology experiment.

Effects on Plants

Test the effects of different substances on plants. Place plants from the same source in pots of the same size, then use different types of materials. You can test different types of potting soil against regular dirt or use the same type of potting soil and test other substances. Water the plants with different types of bottled water and tap water from your home and other homes or add a small amount of vinegar and other liquids to see how the plants react to those substances. Observe the effects of the different substances on the plants and measure how quickly each plant grows in comparison to the others.

Water Bottles

Test the amount of germs and toxins found when you refill a water bottle. Start by taking a sample swab from the outside lip of the bottle and looking at the water under a microscope for any bacteria or impurities. Then drink from the bottle as you otherwise would and test the bottle each time you refill it with extra water. Student athletes can even use the same plastic water bottles they carry with them to practice every day. Each time, you'll want to swab the inside lip of the bottle and look at the swab under a microscope. Identify any bacteria or toxins by looking at the examples found in your textbook.

Public Germs

You might be surprised when you check different public areas for germs. Take swabs at public bathrooms, in your classroom, on the door handles at stores and even books at the public library. Look at the swabs under a microscope and see what types of germs you find. Then offer a comparison of the germs and explain your findings. Discuss which germs are harmful and what levels of germs you found.

Do a biology experiment focusing on how the hair reacts to different types of products. Test shampoos, conditioners, hair gels, hair sprays and other products. Look for residue left behind by the product, but take a few sample hairs before you begin. Check the consistency and health of the sample hairs under a microscope and compare those results against hairs after using the products. Observe any changes you notice in the look or feel of your hair, as well. Then look for signs that the hair has become more damaged or healthier since you used the product. You’ll need to narrow it down to just a few products, but if you have more time, use one product for several days before switching to another.

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Jennifer Eblin has been a full-time freelance writer since 2006. Her work has appeared on several websites, including Tool Box Tales and Zonder. Eblin received a master's degree in historic preservation from the Savannah College of Art and Design.

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Biology Research Projects for High School Students: 20 Ideas To Try This Summer

By János Perczel

Co-founder of Polygence, PhD from MIT

16 minute read

Biology and biomedical research are two of the most popular academic disciplines among high schoolers. If you’re someone who’s interested in those fields and you’re looking for research opportunities this summer, you’ve come to the right place! With the study of biology, not only can you gain a better understanding of the natural world, but your research can have practical applications in fields like medicine, agriculture, and environmental science. Whether you’re just starting out in your exploration of biology, have taken a biology class in school, or you’re looking to do some advanced research to submit to your state’s science fair , we have level-appropriate ideas for you!

With a variety of topics like cancer treatment, genetics, neurodegenerative diseases, and marine life, we’ve got you covered. Here is a curated list of 20 different research project ideas to get those creative juices flowing. If you’re hungry for more, head over to our comprehensive Project Ideas database here and browse over 2800 more ideas!  

Research YOUR fave areas of Biology and Medicine

Polygence pairs you with an expert mentor in to create a passion project around biology and medicine. Together, you work to create a high quality research project that is uniquely your own. We also offer options to explore multiple topics, or to showcase your final product!

Human Body Project Ideas

Rate of cognitive decline in different elevations.

Oxygen partial pressure decreases with altitude, challenging blood oxygenation which may affect brain function. If you’ve ever felt some altitude sickness, then this is exactly what’s happening. This is because the atmospheric pressure decreases at higher elevations, leading to a decrease in the partial pressures of the gasses in the air, including oxygen. And of course, oxygen is needed for us to function. What is the effect on brain health/ cognition in sudden increased elevation: say, climbing Mount Everest? Does chronic exposure to high elevations increase the likelihood of dementia? In this project, a meta-analysis of published works examining the effects of altitude on cognition would be conducted.

Idea by mentor Alyssa

Building a Blood Vessel

Use online graphics to illustrate how a blood vessel forms. Blood vessels are structures that carry blood and are responsible for transporting nutrients and oxygen throughout the body. There are three main types of blood vessels: arteries, veins, and capillaries. For this project, complete a literature search to understand what is known about blood vessel growth. Then, utilize this information to generate a graphic with no words to demonstrate how the vasculature (network of blood vessels) forms. The goal of this project is to explain science without using text and therefore make it more available to a larger community.

Idea by mentor Natalie

Examining the bacterial profile of various households

As of late, bacterial microbiomes have been a huge and interesting topic in the field of bacteriology as they play an important role in human health. Bacterial microbiomes are communities of bacteria that live on or outside organisms. They’re found in various parts of the human body, and help us to digest food and regulate our immune system. In this project, you will seek to understand how skin microbiomes can differ between different  individuals of different households. This project will require making different bacterial media that can be made at home selecting for various microorganisms. If you’re new to preparing bacterial media, check out this resource here!

Idea by mentor Hamilton

Regulation of Circadian Clocks

Sleep is known to be governed by two distinct processes: a circadian clock that aligns sleep and wakefulness to the solar day and the sleep homeostat that encodes for sleep debt as a compensatory mechanism against sleep loss. You’ve most likely heard about circadian rhythm and our body’s internal clock, and circadian regulation of sleep is a fundamental process that allows animals to anticipate sleepiness or wakefulness consistently every day. These mechanisms can be regulated in multiple ways: at the gene, protein, gene, and clock neuronal level. In this project, we will focus on 1) how to efficiently digest primary and review articles to compile and condense information, 2) investigate how circadian clocks are regulated at these different genetic levels, and 3) try to effectively summarize the information we've gathered. We can present this information in a variety of ways, and what the final product looks like is up to you.

Idea by mentor Oscar

The Biology of Aging

Aging is the number one risk factor for a variety of diseases including cancer, neurodegenerative disease, and loss of hearing/sight. We are only now beginning to truly understand the process of aging and have even started to uncover ways that we could stop, or potentially reverse, the effects of aging. What are the hallmarks/signs of aging? How do researchers study 'aging'? How does human lifespan and aging compare to the rest of the animal kingdom? Is it possible to stop or reverse the effects of aging? What advancements are being made related to this? We could explore these questions or brainstorm others you might have about the biology of aging.

Idea by mentor Emily

Animals, Plants, and Nature Project Ideas

How genetically engineered mosquitoes are reducing rates of vector-borne diseases such as zika.

Many countries are already releasing millions of genetically engineered mosquitoes into the wild every week. These mosquitoes have been modified to reduce their ability to transmit disease-causing pathogens like dengue fever, Zika, and malaria, and are sent into the wild to mate with disease-carrying mosquitoes. However, this is still controversial as some people are concerned about the unintended consequences on the environment. What could be the potential pros and cons for this? The project will mainly focus on doing meta analysis of articles and watching informative videos to understand how/why genetically engineered mosquitoes can be used to reduce rates of different diseases. Students will have the chance to use critical thinking and do in-depth research on genetic engineering techniques, how scientists determine breeding rates and number of insects released, and epidemiology of different bloodborne diseases.

Idea by mentor Vanessa

Efficacy of Marine Protected Areas

Marine protected areas (MPAs) are areas of ocean or coastal waters that are set aside for the conservation and sustainable use of marine resources. These areas are established by governments, NGOs, or other organizations, and they can take different forms, from fully protected "no-take" zones to areas with regulated fishing or other activities. Marine protected areas have the potential to guide sustainable resource management and protect biodiversity, but have a host of reasons for why they are not currently effective. Explore reasons for why MPAs may not be effective. Then develop a framework for mapping, modeling, and implementing an effective Marine Protected Area.

Bioinspiration: Do animals hold the answers?

Can the toxins produced by frogs help us fight antibiotic resistant bacteria strains? How can understanding how lizards and newts regrow their limbs help us improve wound treatment? Why do tilapia skins help with burns? Discover the role of animals in the development of modern medicine as well as its potential. Are there any ethical concerns with these developments and findings? If so, what are they and do they matter? Share your findings in a research proposal, article, or presentation.

Idea by mentor Cheyenne

How Climate Change Can Affect Future Distributions of Rare Species

Climate change, such as global warming and longer drought, can threaten the existence of some of the rarest plants on earth. It is important to understand how future suitable habitats will change for these rare species so that we can target our conservation efforts in specific areas. In this project, you will identify a rare species that you like (it can be animals, plants, or fungi!), and gather the data online on its current occurrences. Then you will learn how to perform species distribution modeling to map its current and future suitable habitat areas. To get you started on learning species distribution modeling, check out this Youtube resource here. The changes in the amount or location of future suitable habitats can significantly affect the destiny of a rare species. By doing this project, you will not only learn skills in data analyses but also become the best ambassador for this rare species that you love. 

Idea by mentor Yingtong

A Reef’s Best Frenemies

Coral reefs are in global decline. A primary cause of this is "coral bleaching" which results in the white reefs we often see in the news. Coral bleaching is actually the breakdown in the partnership between the coral animal and tiny, symbiotic algae that live within its cells. Corals and algae have a variety of thermal tolerances which are likely decided by genetic and environmental factors. However, despite how important this relationship is, it's currently very poorly understood. This project would review existing literature on the symbiotic partnernship and try to identify factors that predict bleaching and thermal resilience.

Idea by mentor Carly

Dive in to BioMed NOW!

Register to get paired with one of our expert mentors and to get started on exploring your passions today! You have agency in setting up your schedule for this research. Dive in now!

Diseases and Treatments Project Ideas

The understanding of a new and upcoming treatment: immunotherapy.

Immunotherapies have been growing in the past few years as alternative treatments for many types of cancer. These treatments work by boosting the patient's immune system to fight the disease, however it is not always effective. There are many types of immunotherapies with various nuances, but they all work to attack specific cells that are causing the disease. For this project, pick one of a few types of immunotherapy and deeply understand the mechanism of action and what is the current effectiveness against the cancer it treats.

Idea by mentor Hannah

Exploring The Cancer Genome Atlas data 

There has been an explosion of publicly available data for cancer. The Cancer Genome Atlas was a research program with the purpose of creating a comprehensive catalog of genomic and molecular information about different types of cancer, with the aim of improving our understanding of the disease and developing new treatments. The dataset has been used to identify new cancer subtypes, develop diagnostic tests, and discover potential targets for new cancer therapies. Explore the implications and impact of The Cancer Genome Atlas data, and why it’s become so important.

Idea by mentor Hersh

Systematic Review and Meta-Analysis of Physiological Benefits of Fasting-induced Autophagy

Autophagy, meaning "self-eating", is a cellular process where damaged or unwanted components are disposed. Autophagy has been linked to various diseased pathologies, including cancer and heart disease. Fasting or specific dietary lifestyles may induce levels of autophagy in the human body. In this project, we will perform and systematic review and meta-analysis of fasting or diet-induced autophagy and its benefits on the body. You will gain skills in 1) searching and reviewing primary literature, 2) computational skills for performing data analysis (R language), and 3) writing your scientific findings.

Idea by mentor Jose 

The Amyloid Hypothesis: Sifting through the controversy

For many years, scientists have thought that amyloid beta was the protein responsible for a patient developing Alzheimer's Disease symptoms. This "Amyloid Hypothesis" is now being questioned in light of current clinical data. Recently, drugs have been developed that reduce amyloid beta in patients. Surprisingly, the drugs worked in reducing amyloid beta, but it did not result in the slowing of disease pathology. Does this mean that the amyloid hypothesis is incorrect? Is amyloid beta less important in the progression of disease then what we once thought? This research project aims to explore the issues with the amyloid hypothesis and to assess where we stand in our understanding of amyloid beta's contribution to Alzheimer’s.

Idea by mentor Patrick

How do vaccines work?

During the COVID pandemic, vaccines have been all over the news! But how do they actually work? What’s the science behind them? Through this project, you will explore how vaccines work and the history of science behind vaccine development. While the final product of the projectwill be up to you, the ultimate goal of this project is for you to be a true public health advocate for vaccines and to be able to communicate why vaccines are so important in a way that the general public can understand.

Idea by mentor Helen

Sleep Disruption Profiles in Various Mouse Models of Alzheimer’s

Alzheimer's disease (AD) has been studied for decades but we are no closer to understanding the mechanisms of the disease. Because of the vast number of researchers studying AD, there are numerous models used to study the disease. All these models have different sleep profiles, phenotypes, disease onsets, sex differences etc. Therefore, in this project we will compile a document based on extensive literature review about the various models there are. We will focus on sleep profiles in these animals with an emphasis on male and female differences. This information is valuable because it is important to know which model is best to use to answer your scientific questions and there is a lot of criticism (by other scientists) that can be brought on by the model chosen so you need to be able to justify your choice. This project will also introduce you to the world of AD research and some of the gaps in knowledge in the field.

Idea by mentor Shenee

Rethinking The Treatment Of Neurodegenerative Diseases

Neurodegenerative diseases affect millions of people worldwide. They are conditions that affect the nervous system, particularly the brain and spinal cord, and examples include Alzheimer’s and Parkinson’s. While billions of dollars have been spent trying to find treatments for the disease, very few drugs and therapies have had a meaningful impact on slowing down disease progression. This is often because by the time someone is diagnosed with a disease, it has progressed too far for a treatment to have a substantial effect. Some recent approaches to treatment have turned to looking for early indications of the disease (termed "biomarkers") that can occur before the onset of symptoms. By diagnosing disease and beginning treatment before symptoms arise, these treatments could have a more profound effect in slowing down the progression of disease. Students could review the recent progress being made on identifying biomarkers for neurodegenerative diseases, and either write a paper or even record a podcast on their findings!

Idea by mentor David

Genetics Project Ideas

Height and genetics: nature or nurture.

How much do your genes determine your height? How much do nutrition and environmental factors play a role? What gene variants are implicated in height differences and what is the role of epigenetics? Epigenetics is the study of heritable changes in gene expression or cellular phenotype that occur without changes to the underlying DNA sequence. These changes can be influenced by diet and lifestyle. We will access and analyze an open dataset on twins to estimate the correlation between monozygotic twins (who have the exact same DNA) and height. You will learn to use R to open a dataset, analyze data with statistical methods such the student’s t-test, and display your data as graphs and charts. Finally, you will learn how to make a research presentation on height and genetics, describe the research methods, and present the data in a compelling and thorough way.

Idea by mentor Adeoluwa

The World of Personalized Medicine

Similar to our fingerprints, our genetic code is also unique to each individual person. Our genetic code is what determines our hair color, height, eye color, skin tone...just about everything! For those that develop diseases such as cancer, their genetic code found inside the malignant cells that comprise a tumor may also be unique to them or to certain groups of people with similar mutations (the drivers of disease). So why is it that we treat each person the same way even though the genetic drivers of that disease may be disparate? The world of Personalized Medicine is new and exciting and looks to circumvent this problem. Personalized Medicine (also known as precision medicine) uses the genetic code of a patients disease to guide treatment options that prove to be highly efficacious. Together, lets write a review on a disease of your choice that could benefit from Personalized Medicine based on current literature and research.

Idea by mentor Somer

General Biology Project Ideas

Teach a biology concept two ways: to your fellow students and to the general public.

One of the best ways to learn is to teach. Choose a biological concept that interests you and prepare a lesson and or demo on it. The format should be a video recording of yourself teaching (a la Khan Academy or a Zoom class), but the other details are up to you. Consider incorporating a demonstration (e.g. how can you use items from your kitchen to illustrate properties of mixtures?) or animation (e.g. to illustrate molecular motion). Also consider how you will check that your students understand the concept(s) and/or skill(s) you have taught them. Prepare and record two versions of your lesson: one intended for your peers and one for the general public. How will the versions differ to reflect these different audiences? You will learn what it's like to teach, gain a much greater understanding of your chosen concept(s)/skill(s), and learn how to communicate science to different audiences.

Idea by mentor Alexa

Once you’ve picked a project idea, check out some of our resources to help you progress with your project! Whether you’re stuck on how to cite sources , how to come up with a great thesis statement , or how to showcase your work once it’s finished , we’ve created blog posts to help you out. If you’re interested in doing one of the biology research projects with the help of an amazing mentor at Polygence, apply now ! If you would like some help with coming up with your own idea, book a complimentary consultation call with our admissions team here ! For more biology and science research information, check out our comprehensive list of research opportunities for high school students .

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30 Best Science Experiments & Projects for High School

Welcome to our round-up of top science fair projects and science experiments tailored specifically for curious high school students.

Science fair is not just about the glitz and glamour of a first-place trophy; it’s about the passion, the inquiry, and the insatiable curiosity that drive every scientist, young and old. Hopefully, our curated list of the best hands-on science fair projects for high school students will ignite that curiosity in you.

Each project on this list offers a unique opportunity to dive deep into scientific inquiry and present findings with both clarity and flair.

Let’s dive in and make learning an unforgettable adventure!

1. Burn Calories

Don’t miss this opportunity to unravel the mysteries of energy transformation and uncover the scientific secrets hidden in the simplest of substances!

Learn more: Science Buddies

2. Extracting DNA from Strawberry

By following a series of simple yet insightful steps, students will witness the magical moment of DNA extraction, fostering a deeper appreciation for the fundamental building blocks of life.

Learn more: Extracting DNA from Strawberry

3. Build a Simple DIY Newton’s Cradle

As students assemble the materials and witness the rhythmic dance of swinging spheres, they will witness the scientific principles they’ve learned in the classroom come to life before their eyes.

4. Make a Monster Dry Ice Bubbles

Unleash your inner mad scientist and learn how to make Monster Dry Ice Bubbles with this high school science experiment!

Get ready to be captivated as you create giant, spooky bubbles that dance and swirl with the mysterious power of dry ice.

Learn more: Wonder How To

5. Soil Erosion Experiment

As stewards of our environment, it’s crucial to comprehend the impact of natural processes like soil erosion.

Through this experiment, students will gain a deeper appreciation for the significance of soil conservation and sustainable land management practices.

Learn more: Life is a Garden

6. Candle Carousel

This experiment combines the wonders of physics with the art of crafting, making it an enriching experience that ignites curiosity and fosters a deeper appreciation for the elegant dance of energy in our world.

7. Find Out if Water Conducts Electricity

In this captivating activity, students will explore the conductive properties of water and unlock the secrets of how electrical currents flow through different substances.

Learn more: Rookie Parenting

8. Roller Coaster Stem Experiment

By experimenting with various designs and track configurations, students will refine their problem-solving skills and gain valuable insights into the practical applications of physics and engineering.

Learn more: STEM Project

9. Lemon Battery

Engaging in this experiment not only teaches the basics of electrical circuits but also sparks curiosity about the natural world and the science behind it.

Learn more: Coffee Cups and Crayons

10. Watering Plants Using Different Liquids

Discover the wonders of plant hydration with the intriguing high school science experiment – “Watering Plants Using Different Liquids.” In this captivating project, students explore how various liquids impact plant growth and health.

Learn more: Lemon Lime Adventures

11. Measure Electrolytes Found in Sports Drinks

By conducting a series of tests and analyses, students will quantify the electrolyte content present in various sports drinks.

12. Relight the Flame Without Directly Touching It

This captivating project challenges students to learn about the intriguing properties of heat transfer and combustion.

By exploring different methods to reignite a candle flame without physical contact, students will uncover the secrets of heat conduction, convection, and radiation.

Learn more: Stevespangler

13. Conduct Fingerprint Analysis

This captivating project immerses students in the intriguing world of crime scene investigations, where they will uncover the uniqueness of fingerprints and their role in forensic science.

14. Separate Water Into Hydrogen And Oxygen Using Electrolysis

This electrifying project allows students to explore electrolysis and the decomposition of water into its elemental components.

Learn more: Navigating by Joy

15. Simple Color Detection Circuit 

This experiment not only introduces fundamental concepts in electronics and circuitry but also opens up endless possibilities for real-life applications, from automated sorting systems to color-sensitive devices.

16. Carbon Sugar Snake

This enchanting project allows students to witness a dazzling display of science as they combine common household ingredients to create a dark, coiling “snake” made of carbon.

Learn more: Kiwi Co

17. Build a Hydraulic Elevator

This captivating project invites students to learn about engineering and fluid mechanics. By constructing a working model of a hydraulic elevator, students will explore the principles of Pascal’s law and the fascinating concept of fluid pressure.

Learn more: Teach Beside Me

18. Brew up Some Root Beer

This enticing project invites students to explore the fascinating world of chemistry and fermentation while creating their own delicious and bubbly concoction.

Learn more: Home School Creations

19. Extracting Bismuth From Pepto-Bismol Tablets

This hands-on experiment not only sheds light on the principles of chemistry and lab techniques but also highlights the real-world applications of bismuth in medicine and various industries.

Learn more: Popscie

20. Solar-Powered Water Desalination

By designing and building a solar-powered water desalination system, students will learn how to harness the sun’s energy to purify saltwater and make it safe for consumption.

21. Applying Hooke’s Law: Make Your Own Spring Scale

By designing and constructing their very own spring scale, students will uncover the principles of Hooke’s Law and the relationship between force and displacement in a spring system.

22. Homemade Hand Warmer

By creating their own hand warmers using safe and easily accessible materials, students will witness the magic of heat generation through chemical processes.

Learn more: Steve Spangler

23. Explore the Concept of Symbiosis Involving Nitrogen-Fixing Bacteria.

By investigating how certain plants form a mutually beneficial bond with these bacteria, students will gain insights into the essential role of nitrogen fixation in the ecosystem.

Learn more: Education.com

24. Center of Gravity Experiment

This fascinating project invites students to explore the concept of the center of gravity and its role in determining stability.

25. Power up Homemade Batteries

This captivating project invites students to learn about electrochemistry and energy generation.

Learn more: 123 Homeschool

26. Film Canister Explosions

Prepare for a blast of excitement and chemistry with the high school science experiment – “Film Canister Explosions!” This project teaches students about chemical reactions and pressure build-up.

27. Investigating Osmosis with Potato Slices

This hands-on experiment not only provides a practical understanding of osmosis but also highlights its relevance in everyday life, from understanding plant hydration to food preservation techniques.

28. Make Homemade Fly Trap

This captivating “Make Homemade Fly Trap!” project invites students to explore the principles of pest control and observe the behavior of flies.

29. Hydroponics: Gardening Without Soil

This exciting project invites students to explore innovative agricultural practices that harness water and nutrient solutions to grow plants.

By setting up their hydroponic system and nurturing plants through this method, students will witness the fascinating dynamics of root development and nutrient absorption.

30. Clothespin Airplane

As they test and modify their creations, students will learn about the principles of lift, thrust, and drag, gaining a deeper understanding of how these forces come together to keep airplanes soaring through the skies.

Learn more: Steamsational

Similar Posts:

• 68 Best Chemistry Experiments: Learn About Chemical Reactions
• 37 Water Science Experiments: Fun & Easy
• Top 100 Fine Motor Skills Activities for Toddlers and Preschoolers

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Fun and Interesting Biology Experiments for High School: Examples

A high school biology class is more hands-on than middle school science. All biology courses include experiments, whether they are part of a controlled laboratory class, a science fair, or individual student projects. 

Get ideas for simple and easy biology experiments you can incorporate into your classroom by exploring some fascinating high school biology experiments.

Table of Contents

Examples of Biology Experiments for High School

A wide range of biology projects for teens are available, whether you are looking for a science fair project or a class assignment.

Frog Dissection

It is a quintessential part of high school biology to dissect a frog. For your class, try to obtain both female and male specimens so that students can see the eggs and compare the insides.

Flower Dissection

Frog dissection can make high schoolers uncomfortable. Instead, dissect a flower. The teens can identify the male and female parts of the flower. Using a microscope to examine flower intricacies can be fun for high school students.

Diversity Among Plant Samples

To observe diversity among plant samples in a natural setting, such as a local park, is another simple biology experiment. In order to make the experiment more detailed, students can rub collected samples on filter paper to see which plants have which colors. 

Plants exhibit different colors for a variety of reasons, which teens can investigate.

Phototropism

Educating children about how phototropism affects plants can be enlightening. Different materials can be used to affect light in an experiment. It is possible to see how changing the light affects the plant’s growth.

Water From Common Sources

There is always water around. Unfortunately, water contains a number of elements as well. Collecting water samples from different sources and viewing them under a microscope is a great experiment. 

After comparing their results, students can postulate why a given source of water would harbor more organisms than another.

Yeast Experiment

In another experiment, molds are monitored over a two-week period on a piece of bread.

Taste Perception

There is a taste for everything for everyone. Quite literally! There are some people who like sour things and there are others who like sweet things. Do an in-class experiment to find out if everyone perceives taste the same way and has the same threshold for taste.

Disinfectant Effectiveness

Have you ever wondered how effective hand sanitizer is at killing bacteria? Put it to the test! Bacteria can be grown in a Petri dish with paper soaked in peroxide, white vinegar, rubbing alcohol, etc. Discover how each one inhibits bacteria growth.

Pea Plant Genetics

Students can recreate Mendel’s genetic experiments on pea plants. Students can determine the genotype of each parent plant by growing pea plants and comparing their phenotypes.

Examining Fingerprints

A fingerprint is one of the most amazing features of the human body. In addition to being able to open your phone with them, each one is unique as well. Examine the different aspects of your fingerprint by putting it on paper. Everyone in the class should compare their fingerprints.

Comparing Animal and Plant Cells

A student can compare the cells from their cheeks to those from an onion to gain a deeper understanding of animal and plant cells. The cell structures can be better seen under a microscope by staining the cells with iodine or another dye.

An effective way to help students understand DNA structure and function is to create a DNA model. You can build a fairly realistic model of the double helix using candy, string, and toothpicks.

Water Bottle Germs

High school is a time when many people refill their water bottles. Is the bottle contaminated with germs or bacteria? Can a disposable water bottle be refilled safely? Take swabs from the water bottles your students use and look for bacteria around the lid or on the bottle.

Testing Hair

Hair products are widely used by teens. Are they really effective? Take a few hair samples from teens in your class. Check out what happens to the hair when you add common hair products.

Water Cycle

It’s not difficult to understand the water cycle. Teenagers can examine the water cycle firsthand by creating a water cycle experiment. Put a baggie filled with water on a window and have them tape it to it. During the demonstration, they will observe evaporation, condensation, and precipitation.

Closed Ecosystem Bottle

The idea of something having its own ecosystem can be difficult for students to comprehend. It is possible, however, to create a closed ecosystem using a plastic bottle.

Field Survey Biology Experiment

The best part about this experiment is that it is easy, cheap, and you can conduct it in a variety of places around your school or send it home with your students. Monitoring the samples that you collect over time and observing the surrounding area is the objective.

Materials You’ll Need

You will need the following items for this experiment:

• Samples should be collected in a jar or baggie
• Using tweezers
• Hand gloves
• Marking an area with stakes and string or cones is helpful
• To take notes, use paper or a journal
• Microscope, slides, and slide covers

Observation Instructions

It is important to choose an area where you can re-mark easily or where you can leave the markings up so you can return to the same designated area over several months.

• Students should choose one spot to observe. It should not be larger than two to three feet square.
• Is there evidence of animals around? (Search for prints, scat or guano, fur, owl pellets, etc.)
• Can you tell me what kind of plant life you see? Plants (such as moss, lichen, and weeds) should be observed.
• Is there a fungus on your hands? If you see mushrooms or other fungal growth, look for them.
• What kind of insects do you see? Encourage students to look specifically for relationships here, such as mosquitoes and water or bees and flowers.

Sampling and Classroom Instructions

Follow these instructions to bring research back into the classroom.

• Encourage students to make connections and note relationships in their marked areas. They should make an inventory of the area and draw a crude map showing where everything is located.
• Take samples of soil, fungus, moss, plant life, insects, etc., using tweezers if possible.
• Water or soil pH value
• Water microorganisms
• Observing plant cells under a microscope
• Flowers that you find and their comparative structure
• Journals or interactive notebooks should be required for students to record everything.

In the classroom, set up stations for viewing, dissecting, drawing, and testing pH. Having this choice will allow students to examine their specimens in their own way.

Testing for Bacteria

Students should find out where the most bacteria are hiding. For those looking for a lab that guarantees results, this experiment is perfect. Bacteria are always lurking somewhere in students’ Petri dishes, waiting to grow.

Materials you will need are listed below.

• Three Petri dishes per student were prepared
• Swab samples that are sterile
• The painter’s tape
• Tape from Scotch
• Marker with permanent ink
• Paper with graphs
• Hand scissor

You can also purchase sterile Petri dishes and agar separately; however, it is more likely that students will contaminate the plate before swabbing.

Preparing Your Petri Dishes

The preparation of your Petri dishes is crucial to the success of your experiment.

• Students should identify three places (but within the same physical location, such as home or school) where they will swab for bacteria before opening any materials. Have them hypothesize about where bacteria are most likely to grow.
• Cut out three circles from the graph paper after tracing them on the Petri dish.
• Make a line that indicates the circle’s ‘top’ in pencil. Regardless of where you draw the line, you will need something to indicate how your Petri dish is oriented if you want to be sure you’re tracking the same colony every time.
• On the back of the graph paper circle, write the location and date where you will take the swabs. All three Petri dishes should be treated the same way.

Collecting Samples

Students should bring their closed Petri dishes and unopened sterile swabs to the site. They should carefully:

• Prepare a flat surface for the Petri dish.
• The swab should be unwrapped.
• The swab should be swiped across the area suspected of having bacteria.
• Carefully close the lid after wiping the used swab across the agar with the used swab.

If you want to prevent the Petri dish lid from accidentally falling off, you can tape it shut.

Evaluating Results

After swabbing the areas, the results are what matter.

• Students should draw circles the size of Petri dishes in their lab books or on separate graph paper. For each dish the student has, draw one week’s worth of Petri dishes.
• Draw the size of the colonies in their notebooks as they grow, making daily observations. Over a month, have them observe on the same day(s) if they cannot observe daily.
• Additionally, they should record the color and other characteristics of their bacteria colonies.
• A conclusion should be written by the students at the end of their study.

The Effect of Light on Growth

The purpose of this lab is to investigate how light affects plant growth. Almost any plant can be used, but cress will grow more quickly, so your students will get results faster.

Make sure you have all the materials you need.

• Cup or bowl made of Styrofoam
• Soil for potting
• Taking pictures

Instructions

Now that you have your materials ready, it’s time to get started.

• The seeds should be planted in the cups on Day 1.
• The cups should be labeled according to the type of light you will use. There are several types of light that you can compare, such as sunlight versus complete darkness.
• Every day after the initial day, take a picture of each cup and try to measure its growth.
• Note the color and shape characteristics of the sprouts for your lab entries.

Planaria Regeneration

Students will test whether cutting planaria makes a difference in how they regenerate and observe how quickly they regenerate.

You will need to grab something in order to conduct this experiment.

• There are nine planarias
• Three small plastic Petri dishes
• Petri dish, large, made of plastic
• Pipette made of plastic
• Magnifying glass 1
• Coverlip made of plastic
• Water from springs
• Disposable paper towels
• Pack of ice (optional)

Setup Instructions

When it comes to creating fun and interesting biology experiments for high schoolers, getting the setup right is half the battle.

• To avoid confusion later, number the three small Petri dishes.
• Move a planarian into the large Petri dish using the pipet.
• Try setting the Petri dish on an ice pack for a few minutes at this point. There is no need to do this, but it will slow down the planarian, making it easier to cut.
• In the back of the head
• The middle of the road
• To the right, towards the tail
• Each segment should be transferred gently to a new Petri dish (with spring water) using the pipet.
• All remaining worm segments should be repeated in the same manner.
• Keep an eye on the planaria every day. Upon appearing on the planarian’s head, the photoreceptors (black dots that resemble eyes) will indicate that the regeneration is complete.

Scientific Method and High School Biology Experiments

Students are taught science elements in high school biology. These main focuses include the scientific method. Participants in science are encouraged to think like investigators and to generate hypotheses about what will happen in a given experiment. The experiment is then designed to either prove or disprove the hypothesis. By doing so, teens are encouraged to engage in the scientific method while learning other scientific skills, such as:

• Using present factors and knowledge to make a rational estimate
• Ability to pay close attention to details and monitor
• What to do if you turn out to be wrong and how to move on
• Skills in quick thinking

Biological experiments can be fun, but there is also an educational component to them.

Fun and Interesting High School Biology Experiments

Taking biology in high school can be a lot of fun for teens. It is possible to make biology more than just another course of study by finding the right experiment. You never know, right? You might even inspire your student to enter a science fair or to pursue a science-related career?

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10 High School Science Lab Experiments - Biology

At its core, biology aims to answer fundamental questions about the nature of life, such as how organisms are composed, how they function and maintain homeostasis, how they grow and reproduce, how they evolve and adapt to their environment, and how they interact with one another and their surroundings. 

High school biologyteachers have so many in-person and virtual lab options for high school lab experiments. We’ve broken them down into five categories:

DNA Experiments

Microscopy experiments, osmosis & diffusion experiments, bacteria experiments , genetics experiments, in-person lab: extracting dna from strawberries.

This activity teaches students about the structure and function of DNA while also demonstrating how DNA can be isolated from cells. Students crush strawberries and use a lysis buffer to break down cell and nuclear membranes, releasing the DNA. The mixture is then filtered, and rubbing alcohol is added to precipitate the DNA, making it visible as a cloudy, stringy substance.

Virtual lab: DNA: Structure and Function

In the narrative of this virtual lab, students will work as an intern for a science magazine, Science Explained. One of the magazine’s readers has written a letter. They’re confused about DNA and have some questions about its structure and function. It’s their job to find out the answers and clear things up. They’ll get to learn how DNA is structured and how DNA’s code translates to functional molecules called proteins.

In-person experiment: Onion cell microscopy

This teaches students about cell structure and function using onion epidermal cells. Students prepare a wet mount slide with a thin layer of onion cells, stain them with iodine, and observe the cells under a microscope. It allows students to visualize plant cell components, such as the cell wall, cell membrane, and nucleus, while gaining experience with microscopy techniques.

Virtual lab: Meiosis, Mitosis and Plant Gametes 

Students will use microscopy to study samples of lily anthers while helping the team at the laboratory. They’ll study the process of cell division and discover the key differences between meiosis and mitosis. 

In-person lab: Diffusion and osmosis with eggs

Students use decalcified eggs (eggs soaked in vinegar to remove the shell) to study the processes of diffusion and osmosis. By immersing the eggs in various solutions, such as distilled water or corn syrup, students can observe changes in mass and size due to the movement of water across the semi-permeable membrane of the egg.

Virtual lab: Osmosis and Diffusion: Choose the right solution for an intravenous drip

In this virtual lab, students will help save Frank’s life by choosing the correct saline solution for an intravenous drip. He’s dehydrated because of sunstroke and needs extra fluids. They’ll join our virtual lab assistant in the lab to discover what a hypotonic, isotonic, and hypertonic solution is and how water is transported across the cell membrane in osmosis.

Photosynthesis Experiments

In-person lab: photosynthesis and respiration in plants.

Students use an aquatic plant, such as Elodea, and a dissolved oxygen probe or a simple inverted test tube setup to measure the rate of oxygen production during photosynthesis and consumption during cellular respiration. This experiment helps students understand the complementary processes of photosynthesis and cellular respiration in plants.

Virtual lab: Photosynthesis: Electron transport chain

To understand how photosynthesis works, students will shrink to a tiny size and go inside the plant cell of a leaf. Travel further inside the cell into the chloroplast, and then look at the thylakoid membrane. The process of photosynthesis takes place here. Observe the different components of the electron transport chain, from the start of the chain at photosystem II to the end of the chain at ATP synthase. 

In-person experiment: Bacterial growth and antibiotic resistance

Students culture bacteria (e.g., E. coli) on agar plates and test the effectiveness of different antibiotics. They observe zones of inhibition, where bacterial growth is prevented, and learn about antibiotic resistance and the importance of proper antibiotic use.

Virtual lab: Gram Stain: How stains and counterstains work

Dive into the microscopic world and discover the colorful magic of the Gram staining procedure! Students will compare and contrast the cell wall of Gram-positive and Gram-negative bacteria by diving into their microscopic samples and observing how the cell wall structures retain certain reagents during the experiment. Discover how the four reagents of the Gram stain interact with structural components of the cell wall to color the bacteria.       

In-person experiment: Monohybrid Cross and Mendelian Genetics

Students observe the results of monohybrid crosses involving a single trait. Using Punnett squares, students predict offspring ratios and compare them with observed outcomes from live organisms, such as pea plants or fruit flies. This activity helps students understand inheritance, dominant and recessive alleles, and how traits are passed from one generation to the next.

Virtual lab: Mendelian Inheritance: From genes to traits

Did you know that more than 99% of your genes are identical to those found in any other human being on the planet? In this simulation, students will learn how Mendel's postulates can be applied to determine how characteristics are inherited by being passed from one generation to the next.

Are you excited by the idea of virtual labs? Check out our catalog of over 300 simulations and our free 30-day all-access educator’s pass. 

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Winning Biology Science Fair Projects – For All Grades

• January 25, 2023
• Science Fair Ideas

Unlock the secrets of the natural world with these winning biology science fair project ideas .

Whether you’re interested in microorganisms, plant growth, or human anatomy, this list has something for everyone.

These project ideas are not only informative and intriguing, but also provide an opportunity to showcase your scientific skills and understanding.

Get ready to impress your judges and inspire your peers with these top-notch biology science fair project ideas.

Biology Science Fair Ideas – Grade Levels

Select the grade level specific to your requirement to go over the list of exciting and unique science fair projects.

Biology Science Fair Projects For Middle School 

Biology science fair projects for 5th grade, biology science fair projects for 6th grade, biology science fair projects for 7th grade, biology science fair projects for 8th grade, biology science fair projects for high school, biology science fair projects for 9th grade, biology science fair projects for 10th grade, biology science fair projects for 11th grade, biology science fair projects for 12th grade, biology science fair projects – college level, award winning biology science fair projects.

Check out our Winning list of Physics Science Fair Projects & Chemistry Science Fair Projects

Here is the list of our science fair projects designed specifically for middle school students to make them learn Biology with fun!

1. Animal Pyramid Working Model for land, air and water

2. Making a plant cell model

3. Making conservation of bird model

4. Making the life cycle model of a bird

5. Making a frog life cycle model

6. Making a 3-d model of the human digestive system

8. Making a 3-D Spinal cord model

9. Making a model of a section of the tooth 

10. Making a 3-d model of mitochondria

11. Making a 3D model coronavirus

12. Fight coronavirus model

13. Making a 3D model of a fungi

14. Colour Changing Flowers Experiment

15. Demonstrating different parts of a plant

16. Making a 3D model of amoeba

17. Making a 3-D root structure model

18. Growing plants without soil

19. Transpiration bell jar experiment

20. Building a ripe produce detector

21. Making a model of the food chain

22. Prove respiration in plants experiment

23. ‘Plants on the move’ experiment

24. Demonstrating geotropism in plants

25. Magic Bending Bone Experiment

26. Measuring the rate of photosynthesis

27. 3D Model of Ladybug Lifecycle

28. Testing for starch in plants

29. Demonstrating the sticking power of germs

30. Working model of photosynthesis

31. Seed germination experiment

32. Making a candy animal cell

33. 3-D model of the life cycle of a butterfly

34. Lifecycle of a Silkworm

35. Making a 3-d model of the human circulatory system

36. Making a 3-d model of the human respiratory system

37. Making the working model of a kidney

38. Demonstrating how camouflage protects insects from their predators

39. Creating biofuel from waste

40. Osmosis experiment using potato

41. Making a pulse counter

42. Working model of the human heart

43. Evaporation experiment

44. Brain on the plate using clay

45. A model of different types of pollution

46. Thirsty flower experiment

47. Demonstrating the effect of food colouring on plant cell growth

48. Microwave Water Plant Experiment

49. Making a neuron model

50. 3D working model of the human eye

51. Making an ozone layer model

52. Diffusion experiment

53. Model of a DNA strand

54. Demonstrating how animals stay warm

55. How do penguins stay warm and dry

56. Making a heartbeat clock

57. Effect of pepper extract on the growth of sunflower

58. Making a 3-D pollination model

59. Types of blood groups in human beings

60. Explaining Sickle Cell Anemia and its Prevention

61. Making a 3D model of the female reproductive system

Below is a list of our Biology science fair projects that demands a higher level of thought process and may need adequate safety measures for flawless execution. 

62. Demonstrating anaerobic respiration in plants

63. Making a 3-D model of chromosome

64. Leaf Chromatography experiment

65. Wet and dry worm experiment

66. Making a bio-luminescent lamp

67. Making a model of the water cycle

68. Mall’s half-leaf experiment

69. Easy capillary action movement

70. Demonstrating the importance of cell membrane using a balloon

71. Leaves changing colour experiment

72. Making a seed board

73. Making a 3-D model of a section of skin

74. Making an animal diorama

75. Creating biodegradable plastic

76. Making a 3D biodiversity model

77. Demonstrating leaves give out oxygen

78. Making a pollution catcher using petroleum jelly  

79. Finding out whether leaf size matters in plant transpiration rate

80. Does cigarette smoke affect plant growth

81. Do carnivores plants prefer certain types of insects

82. Create a Robotic Articulated Hand

83. Finding out can plant be genetically resistant to heavy metals

84. Demonstrate how the coronavirus affects our cells

85. Banana DNA extraction

86. Explaining what Genetically Modified Organisms

87. Demonstrating the usefulness of microorganisms using a 3D model

88. Making a 3-D Diaphragm model

89. Hydroponics farming working model

90. Hemodialysis working model

91. Making a miniature greenhouse farming model

92. Working model of a human arm

93. Demonstrating how DNA fingerprints are unique

94. How corona vaccine works

95. Miniature botanical garden model

96. 3-D drip-irrigation model

97. Making a solar-operated seed-sowing machine

98. Making a vertical farming model

99. Growing plants in micro-gravity

100. Uncovering hidden sugar in food

101. Finding out why all medicines are not pills.

102. Making a sea habitat diorama

It is true that some Biology projects at science fairs are innovative and end up winning awards. Here, look at some award-winning science fair projects that may inspire and excite you or instil a newfound love for Biology.

103. Making a plastoscope with plastic bottles

104. Demonstrating the role of planktons in marine life

105. Potential of rose petals in boosting the efficiency of solar cells

106. Demonstrating the importance of handwashing

107. Demonstrating the side of the leaf that takes in carbon-dioxide

108. Harvesting transparent and flexible energy using Bi-Layer Graphene

Try our list of science fair resources for project boards and project labels to present your winning science fair project.

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30 Research Ideas in Biology for High School Students

By Eric Eng

High school students often discover that engaging with research ideas in biology significantly enhances their learning experience. Biology, studying life and living organisms, offers many opportunities for curiosity-driven projects.

This blog is dedicated to igniting a passion for scientific discovery for high school students by showcasing 30 research ideas in biology.

These topics are intended as more than just academic tasks; they serve as openings into the fascinating world of biology, enabling students to contribute to our understanding of life.

Exploring biology offers high school students a fascinating journey into the study of life. This field touches everything from the tiny genes that make us who we are to the vast ecosystems that sustain life on Earth.

Here are 30 research ideas for high school students to stimulate inquiry and enhance their understanding of biological principles.

1. Genetics and Heredity: Understanding Life’s Blueprint

Genetics and heredity are the foundation of life’s diversity. High school students can explore how DNA acts as life’s blueprint through simple experiments like DNA extraction from fruits or studying genetic traits and inheritance patterns.

Projects could involve investigating genetic disorders or examining Mendel’s principles through pea-plant experiments.

This area helps students grasp how traits are inherited and the importance of genetics in health while also considering the ethical aspects of genetic engineering.

2. Microbiology: Tackling Antibiotic Resistance

Antibiotic resistance is a critical challenge in microbiology, impacting global health. Students can study this by examining how bacteria grow and respond to antibiotics, showcasing natural selection and mutation.

Projects may include testing the effectiveness of various antibiotics on bacteria and demonstrating how these microorganisms evolve to resist treatment.

This research highlights the need for responsible antibiotic use and the search for new treatments, connecting students to a pressing real-world issue.

3. Botany: The Role of Soil in Plant Growth

The type of soil is crucial for plant health and agricultural output. Students can investigate plant growth in different soils—clay, loam, sand, silt—or analyze the impact of soil pH and nutrients.

By measuring plant growth indicators under varied conditions, this research underscores the importance of soil management for sustainability and food security. It offers a practical look into botany and ecology, with implications for environmental care and agricultural practices.

4. Zoology: Understanding Local Wildlife Behavior for Conservation

Exploring research ideas in biology for high school students can begin right in their backyard by studying local wildlife behavior. This research idea allows high school students to observe wildlife, noting their feeding, social habits, and how they adapt to seasons or changes in their habitat.

This work is crucial for conservation, as understanding animal behavior can help protect them, especially as their environments change due to human actions.

Simple tasks like tracking animal movements or using basic technology to monitor them can offer insights into how to keep local species thriving.

5. Ecology: The Effects of Human Actions on Local Ecosystems

This project focuses on how our activities impact nearby nature. Students can look at local environmental issues, such as pollution or land development, and see how these affect plants and animals.

By collecting soil, water, and air samples or counting the types of species in an area, students can get a clear picture of human impact.

This teaches important ecological concepts and shows students how they can help preserve the environment.

6. Biotechnology: CRISPR and Its Role in Changing Genes

CRISPR technology is a groundbreaking tool in biology that allows scientists to edit genes with precision. This research idea introduces students to the forefront of genetic engineering, showing them how CRISPR can be used in medicine, agriculture, and more.

Students can learn about how CRISPR works and discuss its significant potential and ethical considerations.

Students get a well-rounded view of modern biotechnology by exploring real-world applications and engaging in debates about the moral aspects of gene editing.

7. Marine Biology: Coral Bleaching and Its Effects

Marine biology is a key area for high school research, especially looking into coral bleaching and its impact on ocean life. Coral reefs are crucial for marine ecosystems, acting as homes and food sources for many sea creatures.

However, they’re very sensitive to temperature changes. Global warming has caused more frequent coral bleaching, where corals lose their vibrant colors and main food source due to stress.

This research topic is vital for understanding how coral bleaching affects marine biodiversity and the health of our oceans. It’s a chance for students to contribute to marine conservation efforts and highlight the importance of tackling climate change.

8. Neurobiology: Brain Plasticity and Learning

Exploring research ideas in biology for high school students, neurobiology presents an engaging field, particularly its focus on brain plasticity and its implications for learning and rehabilitation. Brain plasticity is the brain’s ability to change and adapt by forming new connections.

This is crucial for learning new skills, healing after brain injuries, and adjusting to changes. Research could examine how learning activities, like playing an instrument or a new language, influence the brain and improve cognitive functions.

This topic sheds light on how education and therapy can boost brain recovery and enhance learning abilities, showing the power of our brains to adapt and grow.

9. Immunology: How Vaccines Work

Given current global health issues, immunology, especially understanding vaccines, is a timely research topic. Vaccines teach the immune system to fight off diseases without getting sick.

Research in this area can explore the various types of vaccines, how they are developed, and their role in public health, such as stopping smallpox and controlling polio.

This topic is crucial for promoting informed discussions on vaccine development, effectiveness, safety, and the importance of vaccinations in protecting global health.

10. Environmental Science: Impact of Plastic Pollution on Aquatic Life

Plastic pollution is a major problem for water environments, hurting sea animals and ecosystems. High school students can explore how plastics harm fish, marine mammals, and other sea life. This project could include:

• Understanding Plastic Pollution: Learn how plastic ends in oceans and lakes and its journey through these waters.
• Case Studies: Pick a local water body to study the effects of plastic pollution on sea life, like how fish eat microplastics or turtles get tangled in plastic waste.
• Effects on Sea Life: Look into how plastics harm sea animals, causing problems like less mobility, reproductive issues, and even death. See how plastics carry other pollutants, making things worse.
• Solutions: End your project by suggesting ways to lessen plastic pollution, like community clean-ups, better waste management, or using less plastic.

11. Molecular Biology: Protein Synthesis Process

Protein synthesis is crucial for life, turning genetic information into proteins that cells need to function. High school students can explore this process through activities like:

• The Basics: Start with the flow of genetic information from DNA to RNA to protein, focusing on transcription (making mRNA from DNA) and translation (making proteins from mRNA).
• Experiments: Try experiments with simple organisms to see how different conditions affect protein synthesis, such as changes in temperature or chemicals.
• Genetic Engineering: Discuss how understanding protein synthesis helps make medicines and vaccines, and discuss the debates around GMOs.
• Careers: Look into molecular biology and genetic engineering jobs, showing future possibilities.

12. Evolutionary Biology: Natural Selection

Natural selection explains how living things adapt to their environment. High school students can observe evolution through various methods:

• Computer Simulations: Use software to simulate natural selection under different conditions, changing factors like mutation rates or environmental changes to see how populations evolve.
• Field Work: Observe local wildlife over time to see natural selection, noting how certain traits become more common because they help survival.
• Case Studies: Study well-known examples of natural selection, such as the peppered moth or antibiotic-resistant bacteria, to understand how these changes happen.
• Debates: Discuss natural selection’s role in evolution, addressing misconceptions and examining evidence that supports this theory.

13. Conservation Biology: Protecting Endangered Species

Conservation Biology is crucial for maintaining biodiversity and safeguarding species at risk of extinction. High school students seeking research ideas in biology can engage in projects to preserve wildlife and their habitats in this field.

Research could involve identifying endangered species in local areas, evaluating their living conditions, and suggesting ways to protect them.

This might include studying the effects of human actions on these species and proposing solutions to reduce negative impacts.

Such projects educate students about preserving biodiversity and empower them to advocate for environmental protection.

14. Biochemistry: The Basics of Fermentation

Biochemistry connects biology with chemistry by examining the chemical processes in living organisms. A compelling project topic in this area is the study of fermentation, a process where enzymes break down substances into simpler products.

This is key in making foods and drinks like bread, cheese, yogurt, and beer. Students can explore how fermentation works, what factors influence its efficiency, and the role of different microbes in this process.

Through these projects, students will learn about the practical applications of biochemistry in everyday life and gain valuable hands-on experience.

15. Astrobiology: Life in Extreme Conditions

Astrobiology explores the possibility of life in the universe, starting with life forms on Earth that survive in extreme conditions. Research projects can focus on extremophiles, organisms that live in harsh environments, such as very hot or acidic places.

Students can investigate how these organisms adapt and what this means for the existence of life beyond Earth. This research could include collecting samples from extreme environments and analyzing how these organisms survive.

Such studies broaden our understanding of life’s diversity on Earth and inspire curiosity about life in the wider universe.

16. Pharmacology: Natural vs. Synthetic Medicines and Their Impact on Health

When exploring research ideas in biology for high school students, a fascinating topic is comparing natural and synthetic medicines.

This research can shed light on which type of medicine provides better health benefits, has fewer side effects, and is more cost-effective. Students can:

• Study Effectiveness: Look into how well natural and synthetic medicines treat diseases.
• Check Safety: Compare both medicine types’ side effects and safety.
• Analyze Costs: See which medicines are more affordable and easier to get.
• Understand Preferences: Find out why some people prefer natural or synthetic medicines, including cultural reasons.

This project can help understand the best treatment options, blending science with real-world health choices.

17. Anatomy and Physiology: How Exercise Influences Our Bodies

Another excellent topic among research ideas in biology for high school students involves studying how exercise affects our bodies, which is crucial for health and fitness. This research can:

• Examine the Heart: Look at how exercises like running impact heart health.
• Study Muscles and Bones: Investigate how lifting weights affects muscle size and bone health.
• Look at Metabolism: Explore how exercise changes how our bodies use sugar and fat.
• Explore Brain Health: Find out how being active benefits our brains, mood, and thinking.

This research highlights the importance of exercise in maintaining a healthy body and mind.

18. Cell Biology: Understanding Mitosis and Meiosis

In cell biology, mitosis and meiosis are central to life. These processes are essential for growth, healing, and reproduction. High school students can study:

• Processes: Outline the steps of mitosis and meiosis, noting key differences.
• Genetic Diversity: Explore how meiosis creates different genetic combinations.
• Regulation: Study how cells control these processes and why it’s important.
• Errors and Consequences: Investigate what happens when these processes go wrong, like cancer from mitosis errors or genetic issues from meiosis mistakes.

19. Biophysics: Understanding Muscle Movement

Biophysics combines biology and physics to explore life’s physical principles. A captivating project for high school students is examining muscle movement.

This topic investigates how muscles turn chemical energy into motion, focusing on muscle types, energy use, and how temperature affects performance.

Such a study enhances understanding of human body functions and shows how physics applies to biological systems, emphasizing the value of cross-disciplinary study.

20. Paleontology: Discovering Ancient Life through Fossils

Paleontology uses fossils to study ancient life, offering insights into Earth’s historical changes. High school students can create projects identifying and analyzing fossils to learn about past environments and life forms.

Activities might include visiting fossil sites or museums and conducting lab analyses to age and classify fossils.

This research links biology with Earth’s history, fostering appreciation for life’s complexity and developing scientific investigation and analysis skills.

21. Bioinformatics: Analyzing Biological Data with Computer Science

Bioinformatics is at biology’s forefront, using technology to manage and interpret complex data. For students interested in biology and tech, bioinformatics projects offer a chance to study gene analysis, protein structures, or genetic diversity.

This field involves coding, data management, and visualization, contributing to disease research, evolution, and ecosystems.

Bioinformatics projects prepare students for modern science careers and stress computational skills in addressing biological questions.

22. Virology: Understanding Virus Life Cycles

Virology, the study of viruses, is crucial, especially during global pandemics. Students can explore how viruses infect, replicate, and spread. Projects may focus on virus structures, immune system evasion, or vaccine impacts.

This area highlights virology’s role in public health and emphasizes the need for ongoing research to combat viral diseases effectively.

23. Agricultural Science: GMOs and Food Production

Investigating GMOs’ impact on food production is essential for addressing future food security challenges. Students can examine how GMOs have improved agriculture, from increasing yields to enhancing crop resistance to pests and diseases.

Students can assess productivity, environmental effects, and health implications by comparing GMO and organic crops, providing insights into sustainable and safe food production methods.

24. Entomology: Bees and Pollination

Studying bees’ role in pollination is critical for ecosystems and agriculture. Bees are key pollinators, supporting many food crops.

Research can focus on how environmental factors like pesticides and habitat loss affect bees and pollination.

Projects on bee conservation can also highlight the importance of biodiversity for ecosystem health and food security.

25. Ethology: Animal Behavior and Survival

Ethology looks at how animals behave and survive in their environments. High school students can explore animal behaviors, like how birds communicate or how ants organize their societies.

Students can learn about instincts and survival tactics by observing animals in nature or at home. This area offers a chance to develop observation and analysis skills, making it an engaging choice for high school students for research ideas in biology.

26. Pathology: Understanding Diseases

Pathology bridges biology and medicine by studying diseases and their effects on the body. Students can research diseases like diabetes or cancer, focusing on causes, symptoms, and impacts on organs.

Students gain insights into disease processes and the human body’s response through case studies or data analysis.

This field encourages critical thinking about health and disease prevention, positioning it as a valuable research idea in biology for high school students.

27. Toxicology: Effects of Toxins on Life

Toxicology examines how chemicals affect living organisms and the environment. Students can investigate the toxicity of household chemicals on plants or the accumulation of pollutants in wildlife, learning about the dangers of toxins and the importance of environmental protection.

Projects in toxicology can teach about chemical safety, environmental health, and sustainable practices.

It’s an important and relevant field among research ideas in biology for high school students, highlighting the link between human actions and the health of our planet.

28. Biomedical Engineering: New Medical Devices

Biomedical engineering merges medicine and engineering to create devices that improve health care. High school students looking into research ideas in biology can focus on projects like:

• Designing Health Monitors: Making wearable devices that track real-time health data.
• Improving Prosthetics: Working on prosthetic limbs that move more naturally.
• Advancing Drug Delivery: Creating smarter ways to deliver drugs to specific body parts with minimal side effects.

This research is crucial for enhancing patient care and making treatments more affordable and accessible.

29. Nutritional Science: Understanding Healthy Eating

Nutritional science examines how our diet affects our health and how to prevent diseases through food. Students can explore various topics, such as:

• Plant-based Diet Benefits: Investigating health impacts and potential gaps in plant-based diets.
• Processed Foods and Health: How processed foods affect our long-term health.
• Nutrition Education Programs: Designing projects to teach healthy eating in schools or communities.

This area of research helps inform better dietary recommendations and supports public health by promoting nutritional knowledge.

30. Developmental Biology: Growth and Development

Developmental biology studies how organisms grow from conception to adulthood. Research ideas in biology for high school students might include:

• Genetics in Development: Analyzing how certain genes affect growth.
• Regeneration Mechanisms: Studying how some animals regrow parts of their bodies and applying these insights.
• Environmental Impacts on Growth: Examining how external factors like temperature or pollution affect development.

This research deepens our understanding of life’s processes and has broad implications across medicine, environmental science, and agriculture.

By engaging in these studies, students contribute to our knowledge and may discover a passion for biological sciences.

How to Start Your Biology Research Project

Starting a biology research project is an exciting step into discovering new insights about the natural world. Here’s how to get your project off to a great start, focusing on research ideas in biology for high school students.

• Select Your Topic Carefully: Choose a topic that grabs your interest and is doable. Think about what resources you’ll need and whether you can get them through your school or local community. Talk about your ideas with a teacher or mentor for advice on shaping your project.
• Do Your Homework: Before deciding on your hypothesis, explore existing studies. Look at scientific journals, articles, and books related to your chosen topic. This step helps you understand what’s already known and pinpoint areas that need more exploration.
• Craft a Hypothesis: Your hypothesis is a prediction you aim to test. It should be specific and based on your initial research. For instance, if investigating how soil acidity impacts plant growth, you might predict that increased soil acidity reduces plant growth. This hypothesis will guide your entire project.
• Plan Your Experiment: Consider how to test your hypothesis while keeping other factors constant. Outline everything from what you’ll need and how you’ll set up your experiment to how you’ll collect and analyze data. Make sure your plan follows safety rules.
• Prepare for Data Collection and Analysis: Decide how you’ll record and analyze your findings. Choose methods that suit your project, whether using a notebook, a spreadsheet, or software. Think about the statistical techniques you’ll use for analyzing your data.
• Set a Timeline: Organize your work with a timeline that includes key milestones from start to finish. Anticipate potential hurdles and how you might overcome them.
• Get Feedback: Regularly share your progress with teachers, mentors, or classmates. They can offer valuable insights, help solve problems, and refine your approach.
• Be Flexible: Research is about learning and adapting. Be ready to revise your hypothesis or methods based on new findings. Flexibility is crucial for successful scientific research.

By following these steps, you’ll manage your project more smoothly and enjoy uncovering new knowledge.

Every big scientific achievement starts with curiosity and a well-planned approach. Your work on research ideas in biology for high school students could be the beginning of an exciting scientific journey.

The Importance of Ethical Considerations in Biological Research

Exploring research ideas in biology for high school students requires a strong ethical framework. This ensures that our investigations respect life and have a minimal environmental impact.

Ethical research is crucial for the integrity of our findings and for teaching responsibility and ethical conduct in scientific work.

Respecting Life and Protecting the Environment

Ethical biological research prioritizes the welfare of all living beings involved. Whether dealing with plants, animals, or microorganisms, it’s essential to cause the least harm possible.

This means conducting studies to avoid disrupting natural behaviors or habitats. For projects involving fieldwork, it’s particularly important to conduct research without harming the ecosystem.

Additionally, considering the environmental impact of our research is vital. Projects should aim for sustainability, avoiding actions that could harm natural habitats or contribute to pollution.

This approach ensures that pursuing knowledge does not come at the cost of environmental degradation.

Enhancing Credibility Through Ethics

Adhering to ethical guidelines enhances the reliability and respectability of scientific work. Ethical research is a testament to the pursuit of knowledge for the greater good, ensuring that findings are trustworthy and can serve as a foundation for future studies.

Teaching Responsibility and Integrity

For students investigating research ideas in biology for high school students, ethical considerations are a critical part of learning. They encourage a deep sense of responsibility towards our planet and highlight the ethical dimensions of scientific inquiry.

Students learn the importance of conducting research honestly, acknowledging the limits of their studies, and respecting others’ work.

Ethical considerations are fundamental when exploring research ideas in biology for high school students. They ensure that our search for understanding respects all life forms and the environment, enriching the scientific community with credible, responsible work.

Teaching young scientists about ethics is key to fostering a future where research is conducted with integrity and a deep respect for the natural world.

Exploring research ideas in biology for high school students offers a unique opportunity to explore the mysteries of the natural world. These projects enhance academic skills and foster a deeper appreciation for the complexity and interconnectivity of life on Earth.

We encourage students to pursue these research ideas with curiosity, dedication, and a sense of responsibility toward the broader implications of their work.

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Top 10 Biology Experiments You Don't Want to Miss

January 14, 2019 4 min read biology experiments science activities

A few years back we shared a series about how to teach the different areas of science at home, which you can find here:

• Teaching Biology at Home
• Teaching Earth Science at Home
• Teaching Astronomy at Home
• Teaching Chemistry at Home
• Teaching Physics at Home

The posts in the series have remained some of our most popular posts and so we thought we would help you all out by sharing our favorite experiments for each discipline!

We are going to start this series out with biology - here's how you can teach biology at home .

And without further ado, here are our top 10 biology experiments!

Top 10 Biology Experiments

1. Dissect a Flower  

Many of the typical spring blooms, such as lilies, tulips, and daffodils, have clearly seen elements, which makes them excellent specimens for your students to study the structure of a flower.

One of the best ways to do this is through a flower dissection! These step-by-step directions for a flower dissection will help you examine the structure of a flower.

2. Raise a Butterfly

Butterflies go through an amazing life-cycle. A butterfly lays an egg, from which a caterpillar emerges. Then, the caterpillar eats and grows, eventually forming a chrysalis. And several weeks later a butterfly emerges!

There is nothing like watching this process in action! And these instructions on how to grow a butterfly will help you observe this life cycle in action.

3. Extract DNA 

DNA is the stuff that tells our cells what to do and how to look. It resides in the nucleus of a cell, so as you can imagine it is quite tiny. In fact, you normally need a very powerful microscope to see DNA for yourself.

That is unless you extract it and force it to join up together into one giant mass of DNA. And that is exactly what you do with this Banana DNA Extraction experiment .

4. Make a Seed Board 

Plants start their lives out as seeds and there is a huge variety of seeds, just like there is a huge variety of plants.  

These four steps for making a seed board will help your students appreciate the differences and similarities between seeds.

5. Dissect an Owl Pellet 

This one often grosses people out, but dissecting an owl pellet is a great way to learn about bones and animal diet.

Don't worry, owl pellets are not from the backside of an owl. Owls swallow their prey whole, so a few hours after the meal, they will regurgitate the indigestible parts in the form of a pellet.

These four steps for dissecting an owl pellet will help you get the most of this fascinating but slightly suspect dissection.

6. Look at Fingerprints

Our body is covered with an amazing organ know as skin. It's the largest organ of the integumentary system. The  skin on our fingers, toes, palms of your hands, and soles of your feet is folded into tiny ridges. These ridges form swirling patterns, that help our hands and feet grip things.

These directions for examining your fingerprints will help your students understand just how amazing our skin is!

7. Grow an Herb Cutting

Roots are the structure of a plant that anchors into the ground and helps the provide the plant with the nutrients it needs to grow.

These directions for growing an herb cutting will help your students see how roots grow and get a chance to examine roots up close without getting dirty! 

8. Make a Habitat Diorama 

Our planet is covered with different types of habitats. Habitats are the place that is normal for the life and growth of a certain animal or a plant. In other words, it's the area where an animal or plant resides.

These directions for how to make a habitat diorama will help your students learn about the different plants and animals in an area in a hands-on way.

9. Eat a Cell Model

The cell is the basic unit of life, but it's so small that we can't see the cell's structure with our naked eyes. Enter the cell model.

You can make a jello cell, a cake cell, or a cell calzone to eat, but whatever cell you choose to snack on, these edible models will help your students visualize this basic building block of life.

10. Create a Fall Leaf  (or Signs of Spring)  Journal

When you study biology, it's a good idea to learn about the nature surrounding you. A  Fall Leaf journal  or a Signs of Spring journal will help your students learn about the trees and bushes that are in your area.

Wrapping it Up

There are loads more options for biology experiments out there that we love - in fact, we probably could have done a post with 100 experiments! But these are the ten we don't want you to miss.  If you want more biology experiments, check out our Biology Pinterest board .

If you want it all pulled together for you, check out the following our homeschool science programs with easy-to-use plans for teaching biology:

• For Preschool – Intro to Science  and  Summer's Lab
• For Elementary Students –  Biology for the Grammar Stage ,   Biology Lapbooks , The Sassafras Science Adventures ( Zoology ,   Anatomy , and   Botany )
• For Middle School Students –   Biology for the Logic Stage
• High School Students –   Biology for High School

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Science Projects > Science Fair Projects > Biology Science Fair Projects  

Biology Science Fair Projects

A biology science fair project may help your entry stand out in the minds of judges.

Why? One reason is because they’re less common than other projects. Another reason is that under most conditions, biology projects cannot be rushed. Judges may note that when they see your planning log, notebook, or other records.

Getting Started

For tips on performing your experiment and presenting your project, see our free science fair guide.  Browse our Science Fair Kits category for more project ideas and easy-to-use products.

Types of Biology Science Fair Projects

-Bacteria -Botany -Human Body & Anatomy -Insect -Soil, Water, Acid Rain and the Environment -Zoology

Use petri dishes and agar to grow bacteria.

• What effect do household cleaners have on a bacteria culture? What about temperature? What is the best or worst environment in your house for bacteria growth?
• Are there substances in your kitchen (garlic, red pepper, curry, tea tree oil, etc.) that have natural antibacterial properties?
• Use the Gram stain method for testing whether Gram-positive or Gram-negative bacteria is more common in your house. Do common antibiotics interact differently with Gram-positive and Gram-negative bacteria?
• Studying mold growth conditions also makes an interesting experiment. What types of food mold the quickest? How does temperature affect mold growth? Are there some practical ways to slow down the growth of mold? Experiment with different types of preservatives to see how they prevent mold growth.
• Does bacteria grow in a predictable pattern? Try an experiment by making thumbprint, fingerprint, or handprint bacteria cultures using agar and petri dishes.
• How much bacteria grows in the mouth and what effects do common cleaning techniques have on bacteria growth? Consider brushing with a dry toothbrush, comparing different toothpastes, mouthwashes, and flossing as well as time spent cleaning teeth to find which methods work best to keep the mouth clean.
• Is a dog’s mouth really cleaner than a human’s?
• Use GloGerms to simulate the behavior of germs. Experiment to find the best ways to eliminate germs from hands and surfaces. (Test water temperature, soaps, length of time spent washing, etc.)
• See a sample step-by-step project and more project ideas in our Bacteria Science Project Guide .
• Design an experiment to experiment with leaf color pigments . (You might compare pigments of different species of leaves or leaves at different times of year.)

• What happens when different types of soil or fertilizers are used on the same type of plant?
• How do heat and cold affect sprouting?
• How do different soil types affect the ability of roots to anchor the plant?
• Does light wavelength affect plant growth?
• What is the effect of acid rain on plant growth?
• Set up an experiment to measure the rate of photosynthesis and see the effects of temperature, light intensity, or concentration of CO2.

• Try growing seeds from different fruit that you’ve eaten. Which ones grow best?

Human Body & Anatomy :

• Test reflexes, hearing, lung capacity , or vision . Does one age group seem to have better results than another?
• Does your nose have anything to do with taste?
• How does age affect peripheral vision?
• How does the pH level of hair products affect hair quality? (Use pH strips for testing.)
• Can petting an animal lower your heart rate? Is there a difference between petting your own pet and petting an animal that you are not attached to?
• Does the heart rate of an animal decrease while it is being petted?
• Is there a difference between video games that make the player be physically active versus nonphysical video games on the player’s heart rate or blood pressure?

• What happens to insects in winter?
• Which characteristic (fragrance, color, flavor) has the most influence in attracting a species of bee or butterfly to a flower?
• Do bees recognize patterns ? Can this help them find their food sources?
• Design an experiment to explore how ants communicate with scent (pheremones).

Soil , Water , Acid Rain, and the Environment:

• Do the organisms found at different levels of a pond differ significantly? You might try re-creating a pond “cross section” of life.
• Where do you find the most polluted water locally? What about water with the highest and lowest pH? (Use a water test kit.) Does this have an effect on the organisms (fish, insects, algae, protozoa, frogs, etc.) that live in or next to it?
• Investigate which pH and chemical levels are most common in your area. How do garden soils with different amounts of nitrogen, phosphorus, potash, or pH compare? (Use a soil analyzer .)
• Which de-icing agent used on roads in winter has the least negative environmental impact?
• You can make artificial acid rain by taking distilled water and slowly adding sulfuric acid (one drop at a time) until the pH of the water reads about 4.0.
• You may also be able to collect rain water and test its pH level to see if it is acidic enough (pH ~ 4.0) for your experiment.
• Do our soils show the effects of acid rain?
• Can a base such as limestone or limewater be used to protect plants from acid rain ?
• Can an antacid tablet like Tums or Alka-seltzer be used to protect soils from acid rain?
• Does acid rain affect the algae and protozoa found in ponds? Do a comparative study with protozoa grown in distilled water versus protozoa found in a pond that might have been affected by acid rain.
• Does acid rain affect the growth of ferns or moss?
• Study brine shrimp or protozoa ; what happens if you add mild pollutants to their habitat? (See our brine shrimp project .) Do different species (such as amoeba and euglena) react differently? (For testing specific species, you may want to get a live culture .)
• What effect does temperature have on brine shrimp or Triops ? Compare hatching, growth, and population rates in a warmer environment vs. a colder one.
• How do earthworms help improve soil quality?

Science Fair Regulations

Most science fairs have regulations regarding the use of living material, especially bacteria, animals, and humans. You may need to get advance approval for your project, so check your fair’s guidelines before beginning! You can go here to find the rules for ISEF-affiliated science fairs.

Biology / Life Science

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7 Easy Homeschool Biology Experiments for High School Students

Ah, biology. One of my favorite subjects in high school (second to chemistry!) Growing up in the country, it was easy to explore science right outside in our backyard.

Throughout the school year, our hands-on activities included gardening, cracking open fresh chicken eggs, and capturing and dissecting bugs of all kinds. We truly lived the homeschool science dream. For us, there was such a thing as fun biology activities in high school!

Even if you don’t have chickens and a garden in your backyard, you can still successfully use hands-on learning experiences to teach high school biology. Some will require you to purchase equipment and supplies, but many can be done with items you already have at home!

7 Easy Biology Experiments for High School Students

Quick note: We use the terms “lab” and “experiment” somewhat interchangeably. When I think of labs, dissections and microscopes come to mind. When I think of experiments, baking soda and vinegar explosions is my first thought. But realistically, both provide the opportunity for research, hypothesis, and analysis. So, if you see those words used throughout this post, know the end goal is the same!

1. Compare Cell Structures in Plants and Animals

There is massive diversity in the world of cells, also known as the basic building block of all living things. Cells are so small that a microscope must be used to see them. Yet, the cells present in plants and animals are distinctly different.

This lab experiment is a part of our Explore Biology homeschool curriculum at Journey Homeschool Academy! Your student will get to compare their cheek cells to the cells of a leaf. You can download and view the instructions for this lab at the bottom of this post!

2. Microwave Seed Gardening

If microwaving seeds sounds crazy to you, then you and your high school student need to try this experiment!

Most seed packets tell you to plant the seed in the ground and wait a few days for germination. What goes on in the ground between planting and sprouting is quite incredible! But, did you know that microwaving your seeds before planting can affect the speed and success of germination?

This microwaved seed experiment is microscope-free and will need to be spread out over a few days. The reward? Success in teaching science and (hopefully) some delicious radishes!

3. Water Bottle Bacteria Swab

Sometimes I just really wish bacteria were visible to the naked eye. Did I wash my hands well enough? Is the kitchen sink really the grossest surface in my house? For this experiment, there are no detailed instructions.

All you need to do is swab the outside lip of a water bottle after filling it and view the swab under a microscope . Over the course of a day or two, re-swab the bottle each time it is refilled and observe any new or different bacteria under a microscope. From there, your student can hypothesize what factors contributed to bacteria growth!

4. Circulation and Respiration During Activity

I love this activity because there is no extensive equipment or science kits needed! In fact, the only two things needed are a stopwatch and a partner. This is a great science experiment for your student with you or even a sibling!

The process of circulation and respiration in the human body is something that we often take for granted. Combining physical activity with biology will make your student more excited to learn. Plus, they’ll have a lot of fun coming up with activities to get their heart and lungs moving!

Full details for this experiment are provided by Journey Homeschool Academy and can be downloaded at the bottom of this post!

5. Animal Dissections

At Journey Homeschool Academy, many of our biology lab ideas for high school include animal dissections. Our Explore Biology course includes instructions for the dissection of an earthworm , fetal pig , chicken wing, and other previously living creatures.

If your science curriculum includes dissections, don’t skip these labs! Dissections are a crucial part of learning biology! And, while they may seem difficult at first, there are plenty of guides out there to help you along the way.

Still feeling squeamish and not sure how to move forward? In our high school biology curriculum, we offer full video tutorials to walk students through the dissection process step-by-step in our curriculum.

6. Flower Dissections

Did you know that dissection labs can go beyond animals? Though much more fragile and intricate, flower dissections are a fantastic learning opportunity because there is such a large variety of specimens, and many can be found in your backyard!

You can use a simple dissection tool kit to complete this dissection. But, if you don’t have that, a sharp paring knife and a pair of tweezers will work as well.

PS: This lab is included in our Experience Biology curriculum! You can check out a couple free lessons in the sneak peek of the curriculum here!

7. Fermentation and Kombucha

Looking to combine biology, chemistry, and snack time?

Making kombucha will teach your high schooler about yeast growth and fermentation. It also is a perfect segue into a conversation about how good and bad bacteria affect the human GI tract.

This experiment takes a bit longer than most, but your student will be able to document the progress each day. And hopefully, they will end up with a fizzy, fruity drink! (This is a great science fair project if your area has any homeschool science fairs.)

Download a Guide for Two Free Biology Experiments

Put your name and email address in the box below and snag a guide for two free biology experiments. Your students will have the opportunity to learn how to compare plant and animal cells and compare respiration and circulation during different types of activities.

To Biology and Beyond!

It’s easy to lose sight of the beauty of homeschooling: the flexibility, endless creativity, the joy of being able to teach your children…the list goes on!

As you help your teens through middle and high school, remember why you’re homeschooling. Don’t let high school-level biology experiments intimidate you. Instead, let the freedoms that come with homeschooling guide you through biology and beyond!

Get your kids excited about science with engaging, faith-based curriculum.

Take lesson planning off your plate! Journey Homeschool Academy’s multi-sensory approach makes science interesting with flexible, engaging lessons without sacrificing a rigorous academic education.

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Biology Research Projects for High School Students

Indigo Research Team

Are you looking for biology-related topics for your high school research project? If yes, then you have come to the right place. 

We do understand that finding the right topic for research that connects with you can be challenging. This is particularly true for the field of biology since it is very diverse. A good biology project needs to have enough scientific research backing it so that it helps support or disprove your hypothesis. 

This article is all about easy and interesting research projects designed just for keen high school students. We'll explore topics in the domain of the human body, ecosystems, diseases and their treatments, and more. 

Biology Project Ideas For High Schoolers

Here's a carefully curated compilation of cool biology topics to inspire and kick-start your creativity. We have broken the list into categories so that it's easier for you to navigate projects that fall into your interest.

Human Body Project Ideas

The human body is said to be the most complicated biological machine, which opens room for good research topics .  Let's check out some exciting project ideas about the human body.

1. Exploring the Rate of Cognitive Decline at Different Elevations

At higher altitudes, there's a reduction in oxygen partial pressure, impacting blood oxygenation and potentially influencing brain function. If you've ever experienced altitude sickness, you've felt the effects of this phenomenon. The decrease in atmospheric pressure at elevated altitudes results in lower partial pressures of gases, including vital oxygen necessary for our bodily functions.

This project can investigate the impact of sudden increased elevation, such as climbing Denali, on brain health and cognition. Additionally, you can also explore whether continuous exposure to high elevations might contribute to an increased risk of dementia. This biology research project can also analyze published studies examining the correlation between altitude and cognitive brain functions. ‍

2. Making a Visual Guide for Blood Vessel Formation

Create an illustration using online images to showcase the process of blood vessel development. In this project, you can search existing research to understand the current knowledge about how blood vessels form and grow. Then, you can use this gathered information to design a graphic explaining how the network of blood vessels, known as vasculature, takes shape.

This is one of the most interesting human biology project ideas that aims to convey scientific concepts visually, making the information more accessible to a broader audience. ‍

3. Exploring Bacterial Communities in Different Homes

If you’re looking for immune system project ideas, this might be it for you. Bacterial microbiomes are groups of bacteria living on or around living things. These communities of tiny cells are essential for our health, helping with digestion and keeping our immune system in check. The microorganisms in our body outnumber our own cells by approximately 10:1. This project mainly focuses on figuring out how the bacteria on our skin differ between people from different households. To execute this biology project, you can create various bacterial media at home and select other microorganisms. 

Note: While conducting research, avoid abrasions, needle sticks, or cuts to avoid getting bacterial infections. Wearing safety goggles, a face mask, or a face shield can help keep you safe. It is also important after the experiments to wash your hands with soap and water and disinfect surfaces that may have been in contact with the bacteria. At the end of your experiment, fully sterilize everything before disposal.

4. Understanding the Control of Biological Clocks

Next up in the human biology project ideas is understanding how biological clocks work. Sleep is managed by two main processes: the circadian clock, which aligns sleep patterns with the day-night cycle, and sleep homeostasis, which tracks sleep debt as a way to recover from sleep loss. 

You've probably heard about the circadian rhythm, our body's internal clock. Circadian sleep regulation is crucial for animals to predict when they should be awake or sleepy each day. These processes can be controlled at different levels, such as genes, proteins, and neurons in the clock. 

This biology research topic can focus on exploring the regulation of circadian clocks at various genetic levels. This project will help you develop important scientific skills in two areas: the first one is learning how to read and summarize information from scientific articles efficiently,  and the second is finding effective ways to present the gathered information. ‍

5. Exploring the Science of Getting Older

Exploring the science of getting older is one of the most groundbreaking human biology research topics. Growing older is the main factor that increases the risk of various diseases like cancer, neurodegenerative conditions, and sensory impairments. Recently, researchers began to unravel the mysteries of ageing and discover ways to slow down or potentially reverse its effects.

What are the signs of ageing? How do scientists study the process of getting older? How do human lifespan and ageing compare to other animals? Can we actually put a halt to or undo the impacts of ageing? What progress has been made in this area? You can delve into these topics for biology projects or brainstorm other inquiries about the biology of ageing.

Animals, Plants, and Nature Project Ideas

Next up, we’ll discuss the biology research projects related to animals, plants, and nature. These environments are very close to human and they are definitely very interesting to explore.

1. Examining the Impact of Genetically Modified Mosquitoes on Disease Rates

In some areas, like the island of Príncipe, many genetically modified mosquitoes are set free every week. These mosquitoes are modified so they can't easily spread diseases like dengue fever, Zika, and malaria. They're released into nature to mix with regular mosquitoes that carry diseases. But only some agree on whether this is a good idea, as there could be unexpected environmental effects. 

You can conduct research on what could be the good and not-so-good things about this. This biology project is about researching articles and videos to understand how and why scientists use these mosquitoes to reduce diseases and to understand exactly how this works. You may even want to explore exactly how scientists create these genetically modified mosquitoes. 

‍ 2. Effectiveness of Ocean-Protected Zones

Ocean-protected zones, known as Marine Protected Areas (MPAs), are specific parts of the sea or coastal waters set aside to conserve marine resources sustainably. Governments, NGOs, or other groups create these areas, and they can vary from entirely off-limits "no-take" zones to zones with controlled fishing or other activities. While MPAs can help manage resources wisely and safeguard biodiversity, there are various reasons why they might need to be revised.

For your marine biology project ideas, investigate the factors that could make MPAs less effective. Then, devise an alternative plan for creating, modeling, and implementing an efficient Marine Protected Area.

For an insightful example of student-led research in this area, explore this project on Applications of Australian Native Aquatic Plants in Purifying Wastewater Sources at Indigo Research . ‍

3. Learning from Nature: Can Animals Provide Solutions?

Exploring the wisdom of the natural world, you can delve into the intriguing question: Can animals offer us innovative solutions to complex problems? How can studying how lizards and newts regrow their limbs help us make wound treatments better or even help someone who is paralyzed from injury to their spinal cord? Why is tilapia skin useful for burns? Explore these new topics in biology on how animals contribute to shaping modern medicine and its future possibilities. 

Also, consider if there are any ethical worries tied to these discoveries and developments. If there are, what are they, and should we be concerned?  ‍

4. Understanding the Impact of Climate Change on the Habitats of Rare Species

Climate change, marked by factors like global warming and prolonged drought, threatens some of the rarest plants and animals on our planet. It is crucial to figure out how the future living spaces for these rare species might change so we can focus our efforts on preserving specific areas. 

In this project, you can choose a rare species you're interested in and gather online data about where it currently exists. This is a great idea for a biology research project if you’re interested in the environment, ecology or rare plant and animal species, in which you can find out how to use species distribution modeling to map where it lives now and where it might thrive. 

5. Complex Relationships in Coral Reefs

Coral reefs worldwide are struggling, and one big reason is "coral bleaching," making the reefs look white, as you might have seen in the news. Coral bleaching happens when the teamwork between the coral animals and the tiny, helpful algae inside them breaks down. These coral and algae buddies can handle different temperatures, but we don't really know why. 

This biological project can be about reading what scientists have researched about this teamwork and determining what factors can tell us when corals might turn white and how well they can handle temperature changes.

Genetic Project Ideas

If you want to base your project on genetics, we have a few ideas you can look at. 

1. Understanding the Relationship between Genetics and Height 

Epigenetics studies how heritable cellular phenotype or gene expression changes occur without altering the DNA sequence. Such changes are affected by lifestyle and diet. In these biochemical projects, you can analyze the open dataset on identical (or monozygotic) twins to find what biological features are shared between monozygotic twins and which are not. The latter might be affected by non-genetic factors that control these features

You will learn how to use the R tool to look at and analyze data, and use statistical tools to identify significant differences between groups, and, in the end, showcase your research with graphics to communicate it effectively to the audience. 

2. Exploring personalized medication

Just like fingerprints, each of us has a unique genetic code that determines things in our body, like our hair color, height, and eye color. Even diseases like cancer have their own unique codes inside the malignant cells that define important features of the  a tumor. 

For decades, everyone with a specific cancer has been treated the same way with surgery, chemo- or radiotherapy, even if their malignant cells are different. That's where one of the most interesting biology topics for research, personalized medication, comes in. 

It's a new and exciting way to treat diseases. Personalized medicine aims to use the disease's genetic code to customize the treatment to that particular individual. This domain of biology has a lot of published research and a lot of room for new research as well. 

One thing you can do for your biology project subject is to pick one disease whose treatment can really benefit from personalized medication and write a research paper on it based on the work of reputable researchers. 

3. The genetics of neurodevelopmental disorders

Many neurodevelopmental or psychiatric disorders like autism spectrum disorder or schizophrenia have a strong genetic basis. What genes are involved? What proteins do they produce and what are their functions? How do these genetic changes affect brain development and function? Can this knowledge help scientists develop new drugs to treat conditions like schizophrenia that is still being treated with the same drugs as 50 years ago?

This project will allow you to read exciting research that has been published over the last few years, and learn about genetics and neuroscience, two of the most exciting areas of biology and medicine. You will develop skills in scientific research and ways to present complex ideas to an audience. 

Projects based on exciting biological topics allow students to explore the science of living things and get hands-on experience with everything they learned in high school. From investigating altitude's impact on cognition in human beings to exploring genetically engineered mosquitoes, these projects help in understanding biology. 

Students develop critical thinking and research skills in each biology project, apply classroom knowledge, and communicate findings effectively. These projects provide students the freedom to explore individual interests and pave the way for future scientific endeavors. 

If you're interested in conducting biology research, consider finding a mentor who can guide you through your innovative biology project ideas. At Indigo Research, you can start your research at any time of the year, building on the knowledge and skills you've acquired from your internships or academic coursework.

ChatGPT for Teachers

Trauma-informed practices in schools, teacher well-being, cultivating diversity, equity, & inclusion, integrating technology in the classroom, social-emotional development, covid-19 resources, invest in resilience: summer toolkit, civics & resilience, all toolkits, degree programs, trauma-informed professional development, teacher licensure & certification, how to become - career information, classroom management, instructional design, lifestyle & self-care, online higher ed teaching, current events, 4 biology project ideas for high school students.

Biology Projects are great teaching tools educators can use to boost student interest in the subject and spark classroom participation.

Testing plants and gravity

Testing root growth in relationship to gravity is a fun and simple idea. To do this, students need to cut a strip of paper towel approximately one inch wide. Then, they lay pinto beans on the strip and roll it up. Next, moisten the strip and tape it to a square of cardboard, placing the entire thing in a zip top bag. Finally, place it in a warm window and observe over time and look for roots and stems to sprout.

Once the roots and stems sprout, students will notice that the sprouts point up and the roots point down. After making this observation, students should turn the bag so the plant is growing sideways, then upside down, continuing to observe root growth with these changes

Fruit flies and tea

Tea is often offered as a healthful drink, but which tea is the most healthful? This project tries to answer that. To set up the fruit fly and tea experiment, students must create a mixture of tea and fruit fly food. This works best when students choose four different teas to test four different groups of flies. A fifth group — the control group — will receive fruit fly food with plain water. The tea should be brewed by seeping a tea bag in three tablespoons of boiling water for a set period of time. Then, it should be mixed with fruit fly food.

Once the food is prepared, it should be added to five separate vials. Then, each vial receives 10 adult fruit flies. Every day, the fruit flies that remain alive should be removed and transferred to a new vial that contains the same tea and food mixture. This should be repeated until all fruit flies have died. The student can then determine which food/tea mixture provided the greatest longevity to the flies.

Cleaning oil off birds

When birds are coated with oil after an oil spill, their life is at risk. This project will test a variety of solvents to determine which is the best to use in this situation. It uses feathers, not live birds, to make this determination.

The experiment begins with weighing several sets of feathers, then dipping bird feathers in oil. After the feathers are dipped, they are weighed again. This shows the weight of the oil on the feathers and serves as the means of measuring the effectiveness of the solvents.

Once they are all dipped and weighed, the feathers are washed in a range of cleaners, with one group remaining unwashed to serve as a control. After washing, the feathers are weighed yet again. This should indicate which solvent is the most effective, as the feathers washed in it will show the most oil weight loss.

Vitamin C and colds

Vitamin C is often offered as a solution to help prevent the common cold. This simple experiment helps determine if there is much fact to this common bit of advice. The student selects two groups of willing participants, preferably people who do not live in the same house. One group will agree to take a vitamin C tablet daily for a month, while the second will agree not to. All will record any cold symptoms they experience during that month.

At the end of the month, the groups will switch. After a second month, the data can be collected and analyzed to determine if taking vitamin C made a difference in cold symptoms.

Each of these biology project ideas tackles a different aspect of the subject, including botany, environmental science, human biology and zoology. They all provide an interesting way to present important biology ideas to students in a way that encourages inquiry.

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10 Easy Biology Science Fair Projects for High School Students

Published on june 23, 2017 at 10:30 am by sieni kimalainen in lists , news.

If you got out of ideas for your next science project, don’t worry because we created a list of 10   easy biology science fair projects for high school students to help you.

There are several types of science projects you might think of doing. According to  LiveScience , those are descriptive projects, collection projects, demonstration projects, engineering projects and experimentation projects. For our list of biology science fair projects, the experimental ones are predominant. Regarding experiments, if you are interested, you can also check what the 10 simple chemistry experiments with everyday materials .

Phovoir/Shutterstock.com

While creating our list, we came across many interesting, easy biology fair projects for high school so, we will present some of them here. Our main resources were Education , All Science Fair Projects , and LiveScience , but we also used Julian’s Science Fair and Science Buddies for more ideas. Although some of them didn’t have a specified project difficulty, we have gone through many of them and picked the easy ones. Easy, meaning they involve a few people and short time, easily purchased items and materials, and just a few formulas and calculations in the project. Although botany experiments seemed to be the simplest regarding materials needed, we have also tried to cover as many biology fields as we could such as zoology, biochemistry, molecular biology, and genetics. Also, the criteria regarding education level, high school, in this case, was also taken from these resources.

Here are also some tips how to formulate your project chapters. Write an introduction or proposal, where you will explain what you will be doing in your experiment. Then note what your goal with the experiment is, and why you picked this particular problem. After that, you should explain your hypothesis. The hypothesis, in this case, is your assumption on what you are expecting to get out of your experiment. Then you should make a list of materials you used in the experiment, and write exactly how and what you did in the experiment, making sort of instructions transparently so anyone can repeat your experiment. And in the end, you should write the results, and provide additional information on references.

Don’t forget that formulating research question is the foremost and very important part of your project. An interesting hypothesis makes the project more valuable, and also unique ideas and fairly done experiment can lead you to excellent marks and awards. All right then, let’s jump on our list to see what are the easy biology science fair projects for high school students.

Slideshow List XFinance easy biology projects writing a science fair project high school biology experiments High school science fair projects high school biology experiment ideas denaturing proteins science fair project high school botany science fair projects shrimps and acidity science fair project high school zoology science fair projects life science and biology education programs problem of overpopulation science fair project pavlovian conditioning in plants science fair project 10 simple chemistry experiments with everyday materials effectiveness of antibacterical soap science fair project effects of fertilizer on plant growth science fair project how do carnivorous plants digest insect science fair project 10 easy biology science fair projects for high school students cheap easy ideas for biology high school science fair projects cell osmosis and diffusion in animal cells science fair project how does microwave radiation affect organisms science fair project how does different soil type affect plant growth science fair project Show more... Show less

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Science Experiment/investigation ideas for High School Students

Hey all. My students need ideas for science experiments that they have to design and carry out on their own. Please note that I teach in a low-income school district with little resources available. I do have the means to purchase a few items but nothing major. All suggestions still welcomed! Thanks

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