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.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

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

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

It's food. It's Thanksgiving tradition. And guess what: Cranberry Sauce is also science! Try our simple recipe/experiment.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Learn how to make marbleized paper with simple everyday ingredients in this fun activity! Your child will learn about oil and water while doing this project.

Teach your child how butter is created by shaking up cream the old-fashioned way.

Help your child understand surface tension by showing them how they can create a "skin" on top of water.

Show your child how to concoct a simple duo of household ingredients that changes color as acids and bases are added!

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 to test for acids and bases? In this activity you and your child can make your own indicator from red cabbage!

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

Every time a sound is produced it emits a sound wave. This experiment demonstrates how sound travels, using nothing more than a spoon and a string!

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

Turn the common pastime of constructing paper airplanes into a lesson on the physics of aerodynamics and flight with this fun science activity.

This science fair project idea explores whether talking to a plant will help it grow.

This science fair project idea produces sounds by creating vibrations using different objects.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

Believe it or not, the common spud has enough electrochemical energy to power a small digital clock.

This science fair project idea produces varying pitches of sound.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.