Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

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

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

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

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

Making your own glass cleaner is easy, effective and inexpensive!

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!

Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

This trick uses vertical and horizontal forces to help your child to push apart your hands apart, no matter how hard you try to keep them together!

Help your own young scientist tackle the wonders of static electricity from the comfort of his own home!

This is a fun way to introduce kids to the concept of volume, and give them a quick hands-on activity to boot.

Bring the magic and mystery of the night sky to the light of day with this fun constellation art project!

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

Introduce your child to science with something they see everyday--their shadow!

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

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

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

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

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

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.

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

The purpose of this science fair project is to build a basic radio.

Make meringues with your first grader and see how states of matter can transform before your very eyes. Here's how:

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

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