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

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

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

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

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

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

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.

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.

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

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?

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!

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

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!

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.

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

The purpose of this science fair project is to build a basic radio.

All you need are pencils, paper and some scissors to get started on this easy and fun game to review astronomy information, or other types of study concepts.

Learn with makes water molecules work with this fun and easy science activity!

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

Conduct a simple science experiment to see if flowers from your garden pass the acid-base indicator test with this exciting chemistry activity.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

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

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

This science fair project idea produces varying pitches of sound.

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

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.