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

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

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

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.

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

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

This homemade parachute toy is incredibly easy to build. Plus, it gives kids an excuse to investigate and experiment...the backbone of kindergarten science.

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.

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.

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.

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

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

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

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.

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!

Explore solids and liquids with your young scientist by making gluep, a goopy substance that can behave like both a solid and a liquid!

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

Water can go from solid to liquid to gas...but how does popcorn go from kernel to snack? Invite your first grade scientist to find out.

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

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.

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.

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

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

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

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

Your kid will be captivated as she watches liquids change color before her very eyes during this fun science project that introduces some chemistry basics.

This kindergarten science activity will help her explore the changing states of matter which transform an egg from raw to soft to hard-boiled.

Engineers in training can get started with this simple wheel-and-axle construction activity.

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!