In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

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

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

Here's a science experiment that gives your kids a chance to see how fire needs oxygen to burn, with a little math and writing practice thrown in.

Delight your budding scientist with this cool physics magic trick and teach her some basic physics concepts while you're at it!

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

Help your kindergarten or first grade child use his creativity to make a beautiful magnetic patterned structure while discovering the wonders of magnets.

This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

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!

Satisfy your sweet tooth with this easy summer activity! Make homemade ice cream and let your child practice his science skills.

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!

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

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

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

How do people move pianos and heavy furniture into tall buildings? Show your kids some pulley potential with this simple household exercise!

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.

Teach your child about using pumps to move water in this simple and educational preschool science activity!

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.

First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

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!

This easy Halloween-themed science experiment for first-graders is perfect for chilly October afternoons or great as a Halloween party activity.

This science exploration lets your first grader see how eggs can provide a perfect environment for a living, growing creature.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

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

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.

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

It's easier than you think to make homemade play dough -- just a few pantry staples makes a natural version of the toy that kids have loved for generations.