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

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.

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.

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

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

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

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

This science fair project idea investigates which objects float and sink in honey, water, and oil.

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

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

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!

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

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

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.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.

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.

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

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

This science activity will help your student explore the changes that occur to transform an egg from raw to soft to hard-boiled.

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.

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.

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

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

It's food. It's Thanksgiving tradition. And guess what: Cranberry Sauce is also science! Try our simple recipe/experiment.