Do you need a science fair project idea? Look no further! We have 50 science fair project ideas for kids of all ages!
50 Science Fair Project Ideas for Elementary to High School Kids!
We’ve rounded up the best science fair project ideas for all ages. These projects use living things like plants and bacteria. Other projects work with batteries and electricity. And of course there is slime! If you are interested in the environment, this is a great place to start. There are projects using color for the artists among us. There are ideas about fingerprints and genetics. Sign me up for the projects that use candy. There’s something for everyone!
Getting Started: Best Science Fair Project Tips
The hardest part of a science fair project can be getting started, so check out these steps!
- Think about what is interesting to you. Do you love food? Are you obsessed with cats or dogs? Are you curious about soil? You’ll find a wide range of fun topic ideas for your science fair on this list.
- Pick a topic or project idea from this list.
- Brainstorm questions about the topic. Check out this resource via Science Buddies.
- Turn your idea into a science fair project. Steve Spangler Science explains that there are three steps for turning an experiment or demonstration into a science fair project. Once you find an idea you like, you must change something about it. Then, create a new experiment. Finally, compare results!
Here are some great books to get the ideas rolling! (Affiliate links.)
Some of the ideas in this post are demonstrations that you can turn into projects. For example, consider making your own fire extinguisher. We know that baking soda and vinegar deprives fire of oxygen. This is what puts the fire out. Change the ratio of baking soda to vinegar to create a new experiment and compare results. Or see what changes you can make to to cause your fire extinguisher to shoot the farthest.
- Create a poster to present your project. Check out this how-to via Kids Activities Blog!
Below, you’ll find ideas for elementary school, middle school, and high school science fair projects!
ELEMENTARY SCHOOL SCIENCE PROJECTS
Some kids participate in their first science fair projects in elementary school. It’s never too early to combine creativity with science! Check out how even preschoolers use the scientific method in this Kids Activities Blog post.
Elementary school students learn about animals and plants. They study cells, the solar system, and weather. Most importantly, elementary students learn to wonder about how the world works. Here is a list of 15 ideas to introduce kids to the wonderful world of science!
- Egg Drop via Kids Activities Blog
This is a classic science experiment. Be sure to change a variable. Then compare results to make the egg drop worthy of a science fair!
- Make a lemon battery via Kids Activities Blog
Maybe I shouldn’t be amazed that you can turn a lemon into a battery, but I am. I really am. Compare results with a potato battery via LoveToKnow.
- Extract DNA from a strawberry via Little Bins for Little Hands
Get up close and personal with the genetic code of a strawberry.
- Dissolving Peeps experiment via Lemon Lime Adventures
Experiment with dissolving Peeps in different liquids. Then eat the leftovers!
- Naked Egg via Making Memories with Your Kids
What’s a naked egg? It’s an egg without an intact shell! It’s weird. Check it out.
- Turn salt into glue via Kids Activities Blog
Explore the relationship between ice and salt with this fun experiment.
- Magnetic mud experiment via Kids Activities Blog
Magnets are fun! Mud is fun! Without a doubt, your kid will enjoy combining the two.
- Erupting dinosaur volcano slime via STEAMsational
Do your kids love dinosaurs? Do your kids love slime? If so, you should check out this project. Be sure to download the free science experiment printable.
Life Science Ideas
- Osmosis via STEAMsational
This is the “naked egg” experiment that also explores the concept of osmosis!
- Bacteria experiment via Kids Activities Blog
Kids will compare bacteria growth and they will drink soda. It’s a win-win, for the kids at least!
- Easy animal science project ideas via Science Kids
This is a list of questions to jumpstart a science fair project for animal-loving kids!
- Plant experiment ideas via Project Learning Tree
Check out these science projects using plants! This link provides projects with different levels of difficulty.
Physics Project Ideas
- How high a ball will bounce via Science Fair Extravaganza
This is perfect for kids who want a simple project using math.
- Electromagnetic train via Kids Activities Blog
Because kids love trains!
Solar System Project Ideas
- Solar system project ideas via NASA
NASA put together a list of questions to get kids started on their projects!
MIDDLE SCHOOL SCIENCE PROJECTS
Have you and your family watched the movie Wonder? If your kid isn’t excited about the science fair, check out this movie. The main character and his best friend make a winning pinhole camera for their science fair. This project would be perfect for a middle schooler interested in light. And of course it’s on our list of project ideas!
Along with the pinhole camera, we have 19 other ideas. Middle schoolers learn about about the human body and cells. They also learn about the environment, electricity, and sound. This list contains projects on these topics and more!
Earth and Environmental Science Ideas
- Recycling grey water via World Wildlife Fund for Nature
Learn about conservation with this grey water recycling system.
- Weather project ideas via SciJinks
Use this list of project ideas that test hypotheses about the weather.
- Soil erosion experiment via Life is a Garden
Experiment with soil erosion and learn about the importance of vegetation!
- Environmental science fair projects via Population Education
Check out this great list of 30 eco-friendly science fair project ideas!
- Mentos geyser science project via Steve Spangler Science
Isolate and change variables to maximize the geyser explosion.
- Energy from garbage via National Energy Education Development
Kids will enjoy learning about why garbage smells bad.
- Taster versus non-taster experiment via Bright Hub Education
Projects on genetics are popular because kids learn about themselves and their friends. Check out this taster versus non-taster experiment!
- Classify fingerprints via HubPages
Any future forensic scientists out there? In this project, kids create a system for classifying fingerprints!
- Identify T-Rex’s closest living relative via Science Buddies
This is one of the coolest dinosaur related projects! Kids can search databases to find T-Rex’s closest living relative. So cool!
Physical Science Ideas
- Pinhole camera via National Geographic Kids
As I mentioned above, this is a project like Auggie’s in Wonder!
- Simple machine project ideas via Julian Trubin
Check out this list of science projects using simple machines. One project even involves roller-coasters!
- Making sound waves via Scientific American
This project creates a model that demonstrates how eardrums work.
- Magnetism project ideas via ThoughtCo
Try out this list of science fair project ideas that explore magnetism.
- Make a fire extinguisher via Home Science Tools
Did you know you can make a fire extinguisher from common household supplies? If not, this experiment is for you!
- Biology and chemistry of gas relief via Science Buddies
Middle schoolers think gas is hilarious. Right or wrong, here’s a science project about gas!
- Beverage coloring and taste via All Science Fair Projects
This project considers the relationship between beverage color and taste!
- Purify water with charcoal via The Homeschool Scientist
You’re probably already using a charcoal filtration system. Kids can learn how water filtration works by making their own!
- Paper airplane launcher via KiwiCo
Paper airplanes are fun for everyone. Check out this experiment and launch that airplane!
Life Science Ideas
- Shrinking cells via Sciencing
Experiment with making cells shrink with water.
- Test algae growth via Seattle Post-Intelligencer
Do you know how algae grows best? Try this experiment to find out!
HIGH SCHOOL SCIENCE PROJECTS
High school science covers a range of subjects from biology to meteorology. Therefore, nothing is off limits when it comes to choosing a science fair project idea! These ideas would be suitable for most high school curriculum. When looking through the list, remember that you can make any of these ideas more complex by changing variables and comparing results.
- Cat coat color via Science Buddies
Calling all cat people! In this experiment you will discover the relationship between chromosomes and cat coat coloring.
- Fingerprint detection via Science Fair Extravaganza
This fingerprint detection project is perfect for the high schoolers who love true crimes!
Earth Science and Nature Ideas
- Landscaping project via Bright Hub Education
Discover which plants grow best locally and the impact these plants have on the environment.
- Botany science projects via ThoughtCo
There are so many great plant projects here!
- Grow Crystals via ThoughtCo
Experiment with growing your own crystals.
Life Science Ideas
- Grow bacteria via Science Bob
Check out this list of questions to start a project about bacteria.
- Biofilm experiment via The Homeschool Scientist
This is a great microbiology experiment!
- Test for starch in plants via Home Science Tools
Hypothesize and learn about starch in photosynthesis.
- 5-Second rule via Science News for Students
Test whether food picked up from the floor within 5 seconds collects less germs than food dropped for a longer amount of time. I do not recommend eating the dropped food. 🙂
- Acidity and Invertebrate Population via LiveScience
Discover how acidity can affect survival rates of a population!
Physical Science Ideas
- Heart rate monitor via Science Buddies
Impress science fair judges by designing and testing your own heart rate monitor!
- How to separate water into hydrogen and oxygen via Navigating by Joy
Use electrolysis to split water into hydrogen and oxygen. Then test the gases!
- Turn milk into plastic via Scientific American
Did you know plastic can be found in milk? This is a fun project using regular household supplies.
- Addiction science project ideas via National Institute on Drug Addiction for Teens
Check out this list of project ideas dealing with drug addiction.
- Increase the amount of oil that can be moved through a pump via LiveScience
Use a clear household spray bottle to simulate a crude oil pumping station!
Maybe one day your little scientist will make it big. In the meantime, we hope these ideas inspire great learning experiences. That’s the purpose of science fairs!
If you are looking for more science activities, be sure to check out 150 Kids Science Activities via Kids Activities Blog.
Comment below to tell us how your science fair project turns out! We would love to hear about it!
Want More Science Fun?
- This color changing milk experiment is an easy beginner’s science project.
- Love astronomy? Check out this solar system project.
- Did you know pipe cleaners and borax powder can be used for making crystals?
- Try out these awesome home experiments with baking soda and vinegar!
- Interested in earth science? Learn how to make a homemade volcano with “lava”.
- We have plenty of physical science too! Check out this bridge building activity for kids.
- Need more science fair project ideas? We’ve got them all!
- Don’t throw out those fall pumpkins just yet! Try this rotten pumpkin experiment.
- Cook outdoors with this solar oven experiment.
- Make your own rocket with this balloon rocket science experiment.
- This hand washing science project is a great way to show people why they need to wash their hands, especially now!
- Want more milk experiments? This tie dye milk experiment is a great way to learn about acids and bases.
- Need another science fair idea? What about this, “How to Reduce Friction Science Fair Project‘?
- Make science sweet with this candy corn science experiment.
- You can still do science experiments with regular household items. Try this ice and salt experiment!
- You’ll love these 10 science experiments to do at home!