An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

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!

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

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

Give your child an introduction to food preservation by making and canning your own yummy, homemade pasta sauce!

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

Here's an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

Introduce your child to the amazing, almost magical phenomenon of static electricity!

Show your child how and why the microwave works, while demonstrating just how strangely foods can behave while inside the crazy cooker.

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

This science fair project idea produces varying pitches of sound.

In this fun activity, your child will create their very own solar oven to bake s'mores!

Here is a quick experiment you can conduct at the playground to introduce or reinforce the concept of Newton's First Law, The Law of Inertia.

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.

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

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

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.

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.

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

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

Check out this mind-blowing experiment in which a hard-boiled egg will fit through an impossibly small opening with the help of only a few matches!

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

What happens when colored beams of light mix? You might be surprised.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

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

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.