With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

This science fair project idea experiments with spinning color wheels and optical illusions.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

This science fair project idea explores the egg's thin membrane.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

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.

This project determines what category of person is most likely to be ticklish.

This science fair project idea determines which method of hand cleansing is the most effective.

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Find out whether a longer airplane will fly farther or a wider paper airplane.

Science fair project that examines condensation and the conditions needed in order for dew to form.

In this science fair project, students make their own rain gauge to measure rainfall.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.