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

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

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

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

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!

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.

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

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

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

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.

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

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.

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

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

Here's a science activity that lets a first grader use an empty dish detergent bottle to create his own fountain as he explores air pressure.

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

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

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

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

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

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

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

What's cooler than an explosion? Not much! This simple science experiment lets kids build their own pop rocket. So put on your safety goggles and let her rip.

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!

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