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

This quick and simple preschool mirror activity will introduce your child to the science of reflection and light with a flashlight experiment and picture game.

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!

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

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.

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

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

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

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

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

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.

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