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

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

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

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

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

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

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

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

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

Take a look at forensic science with your child. She'll learn how to take a shoe impression, just like the detectives do!

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

Try this chemistry experiment with your curious kid and get some "shocking" results!

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

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

Chemistry isn't just incredible ... sometimes its edible! These crystal lollipops are a delicious introduction to chemistry concepts.

What's the quickest way to separate salt and pepper? Let static electricity do the work! Your child will be fascinated by this simple experiment.

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

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.

Explore the chemistry of latex polymers with this outrageous, hilarious science activity.

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

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

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

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

Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

Deck the halls with last season's Christmas lights for a spectacular and electrifying science activity.

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

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