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Science Fair Project Ideas

Education.com has assembled a vast collection of science fair project ideas written by science teachers, professional scientists, and educational consultants on popular science fair topics ranging from physics and chemistry to biology and even sociology. We offer free science fair ideas suitable for every grade level, be it preschool, kindergarten, elementary school, middle school, or high school. Check the boxes in the sidebar to filter your results, or use the search bar to find that perfect science fair project or experiment your child will be sure to love.

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1,621 results

How to Make a Simple Electric Motor

Kids learn how to make a simple electric motor in this great engineering science fair project that teaches them how current generates its own magnetic field.

How to Inflate a Balloon Using Baking Soda and Vinegar

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

Does Tea Stain your Teeth?

Can you stain teeth with tea, coffee, or coke? Explore how in this science fair project idea.

Homemade Lava Lamp

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

How to Make a Solar Oven

Check out this cool and free middle school science fair project idea on how to make a solar oven.

This project explores the effectiveness of various common household ingredients in cleaning tarnished and oxidized coins.

Vegetable Power

This science fair project idea explores if an LED light can be powered by vegetables and/or fruits.

Does Mint Actually Cool Things Down?

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

The Effect of Caffeine on Plant Growth

The goal of this middle school science fair project is to examine the effect of caffeine on plant growth.

The 5 Second Rule

Determine if picking up fallen food in 5 seconds or less prevents the transfer of bacteria from the ground.

Does Chewing Gum Help You Concentrate?

This project investigates whether chewing gum can help a majority of people with focus and concentration.

How Does Microwave Radiation Affect Different Organisms?

This experiment explores how microwave radiation affects fungi, bacteria, and plant life.

How to Make a Lemon Battery

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Do All Liquids Evaporate At The Same Rate?

see whether all liquids evaporate at the same rate. In other words, does water evaporate at the same rate as juice?

How to Make Salt Water Drinkable

This science fair project examines whether ocean water can be made safe to drink.

Electrolysis of Water Experiment

In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.

This science fair idea project identifies the active ingredients in soap and experiments with the properties of soap.

What Makes Ice Melt Faster?

This science fair project explores how salt and sugar affect the melting rate of ice in water.

Does Aspirin Help Plants Grow?

Observe if dissolved aspirin will help plants grow healthier and faster in this science fair project idea.

The Effect of Video Games On the Body

Can playing video games trigger an adrenaline rush even though there's no real danger? In this cool experiment you'll learn all about how fight-or-flight works!

Catalase and Hydrogen Peroxide Experiment

In this cool catalase and hydrogen peroxide experiment, kids put a potato in a jar of hydrogen peroxide to see how catalase acts as an enzyme.

Growing Crystals

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

Endothermic and Exothermic Reactions Experiment

Learn about endothermic and exothermic reactions and energy exchange by experimenting with temperature change in chemical reactions.

Why Do Apples Turn Brown?

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

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