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

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

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

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

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

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

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.

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

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

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!

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.

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

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

This surprisingly good glue recipe comes from common kitchen items.

In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

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.

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!

Teach your child how butter is created by shaking up cream the old-fashioned way.

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

Explore the chemistry of latex polymers with this outrageous, hilarious science activity.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

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

Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.