This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

Construct and experiment with a periscope using reflected light rays to gather an image.

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

Do you think heat can affect a plant's growth rate?

Check out this cool science fair project on identifying rocks and minerals for kids.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

In this Bernoulli's Principle experiment, you'll learn how an increase in the speed of a fluid, like air, decreases pressure.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

This science fair project idea explores alcoholic fermentation at work by making your own soda.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

Discover whether a metal will expand under hot water.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

This project examines what types of objects burn and which burn faster and cleaner.

This biodiversity project examines the biodiversity in your own backyard.

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

This science fair project idea produces varying pitches of sound.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

In this science fair project, students use the streak test to tell minerals apart from each other.

Glass is see-through, but usually you can still see that it is there. In this experiment, we use baby oil to make glass go completely invisible.

This science fair project idea investigates the hardness property of minerals.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.