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

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

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

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.

Teach your first grade scientist the difference between liquids and solids using maple syrup.

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!

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.

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

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

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.

Get your sense of humor ready for this fun science experiment that demonstrates the fundamental physics of air pressure.

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

Play this flashlight game with your child to teach him about objects that are transparent, translucent, and opaque.

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!

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

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.

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!

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

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

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

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!

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!

Did you ever think you could make colors disappear right before your eyes? This science experiment is just like a magic trick: now you see it, now you don't!