Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

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.

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

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

Teach your little scientist about the amazing powers of gravity by comparing the falling speeds of two yummy fruits

In this science fair project, young children discover what happens when two fluids that have different densities get together.

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

Here's a fun activity to help build thinking skills in young first grade scientists, and to encourage them to have a blast exploring the mass and volume.

This fun, think-outside-the-box activity introduces kids to gravity and other basic scientific concepts as they construct an impressive marble run!

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

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

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

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!

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

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

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

This classic children's game demonstrates how sound travels through air vs. through a solid.

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.

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.

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

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

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

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!