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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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1,622 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.

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.

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.

Does Tea Stain your Teeth?

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

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.

Vegetable Power

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

Does Chewing Gum Help You Concentrate?

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

Does Mint Actually Cool Things Down?

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

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

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.

How Does Microwave Radiation Affect Different Organisms?

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

Science fair project that determines whether wireless networks damage living plants. Are WiFi radiation hazardous to your health?

Solar Eclipse Model

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

Renewable Energy Project for Kids: Power from Water

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

How to Make Lightning

Create safe lightning for kids! They'll learn how to make lightning at home with this fun science fair project idea illustrating static charges and grounding.

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 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!

How Fast Does Light Travel in Water vs. Air? Refraction Experiment

How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

Plant Phototropism Experiment

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

Self-Inflating Balloons

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

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.

Oersted's Experiment

In this project, you'll create Oersted's experiment, which relates to how electric currents create magnetic fields.

The 5 Second Rule

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

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