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

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

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

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

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.

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.

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

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

Do this experiment to help your first grader understand how salt can be removed from salt water. All it takes are a few household materials.

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

Here is a quick experiment you can conduct at the playground to introduce or reinforce the concept of Newton's First Law, The Law of Inertia.

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