Design a hearing protection device to protect their ears from loud noises. Examine the properties of current protective hearing devices, materials.

Is your child struggling with the principles of magnetism? Here's a fun activity to demonstrate polarity and understand the basic principles of magnetism.

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

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.

Help your child understand surface tension by showing them how they can create a "skin" on top of water.

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.

Bring back the groovy memories by making shrinky dinks using household materials, while learning about the science of plastics. Here's how to get started:

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.

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

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.

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

This awesome diffraction grating experiment puts high school students' applied math skills to the test by having them calculate the wavelength of laser light.

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.

An home science experiment for older students that teaches about the science behind heat.

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

In this fun science fair project idea learn about the multiple sources of radio waves and fin out how difficult it is to block them.

Future whistleblowers can learn about product safety standards with this exercise in writing and researching.

This activity will help your child review science concepts, learn new ones, and become familiar with examples of various concepts in science. Plus, it's fun!

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

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

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.

Take to the air with science by experimenting with helicopter seeds right in your own backyard!

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

This science fair project idea experiments with spinning color wheels and optical illusions.