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.

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

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 physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

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

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

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!

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

Household items and a bit of imagination will create a CSI kit for your child to have investigative adventures with. Explore the world of forensic science!

Engineers in training can get started with this simple wheel-and-axle construction activity.

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

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.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

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

Combine the science of physics with the fun of playing spy. Your young detective can make his own tiny looking glass. It's simple to make!

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.

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

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