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.

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

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.

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

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

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

Set your young chemist up for an afternoon of science-fueled magic with a deceptively simple activity starring baking soda and vinegar!

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

This science fair project idea produces varying pitches of sound.

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

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

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.

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.

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

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!