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.

Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.

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

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

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

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!

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

Celebrate April Fools' Day with a science prank that is sure to amuse...and educate too!

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

Help your kid feel like a superhero with this safe and fun science experiment that creates an electrical charge that's like a mini lightning bolt!

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

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

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

An home science experiment for older students that teaches about the science behind heat.

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

Teach your kids about entropy with this fun, easy exercise, and teach your money to dance while you're at it!

Before your treat your child (and yourself!) to a yummy snack, help her learn a little about Sir Isaac Newton's First Law of Motion!

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, 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!

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

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

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.

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

A homemade lava lamp gives any room a retro flair. Find out how to make a homemade lava lamp, and learn some science too, with this educational activity.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

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

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