This science fair idea is a great way for kids to explore static electricity. Kids will give a comb a static charge and watch as it separates pepper from salt.

In this science fair project, kids will be able to see where germs reside on their hands while gaining insight into the benefits of thorough hand washing.

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

What is condensation? Little mad scientists will learn about condensation, states of matter, and air pressure by conducting this cool science experiment.

This science project allows students to study the psychology of happiness.

In this fun experiment, we'll find out how color affects heat absorption!

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

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.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

Test your friends to find out if you can replicate the placebo effect's incredible results.

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

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

Use pepper and soap to discover some fun facts about the properties of water.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.