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

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

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.

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.

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

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

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

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.

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.

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.

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

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!

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.

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