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

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

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!

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

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.

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.

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.

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.

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

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.

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.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Here's a fun activity to help build thinking skills in young first grade scientists, and to encourage them to have a blast exploring the mass and volume.

This science exploration lets your first grader see how eggs can provide a perfect environment for a living, growing creature.

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

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

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

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.

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

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

Your child might have noticed how bubbles quickly lose their colors and pop. Check out this creative way to make those bubbles last longer.

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

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

Teach your child about using pumps to move water in this simple and educational preschool science activity!

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.

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.

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

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

In this science fair project, young children discover what happens when two fluids that have different densities get together.

Play this flashlight game with your child to teach him about objects that are transparent, translucent, and opaque.