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.

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!

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

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!

Chemistry is a blast with this backyard bomb made from a sandwich bag. All you need are ingredients from the pantry to create a satisfying, and safe, explosion.

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

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

Here's a fun science experiment that's refreshingly tasty too! Turn regular water into a tasty treat perfect for consuming on a hot day.

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

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

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!

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

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

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.

Introduce your child to the amazing, almost magical phenomenon of static electricity!

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

How powerful is the reaction between baking soda and vinegar? Find out here!

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

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!

Put a twist on traditional oil painting with this fun science activity that you and your first grader can do together.

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.

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

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

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

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!