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The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

.Have you ever had problems with your wifi signal strength? In this experiment you will learn about how wireless signals pass through the air and solid objects.

Turn the common pastime of constructing paper airplanes into a lesson on the physics of aerodynamics and flight with this fun science activity.

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

Find out the differences (if any) in the frequencies of voices produced from a computer, from a phone, and directly coming out of the voice box of a human.

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

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

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

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

What do you get when you combine science and fairies? Fairy scientists who make their own potion, of course! This activity promotes critical thinking skills as your child mixes, experiments, and creates their very own fairy potions.

Learn how matter transmits sound with a simple, hands-on experiment using sand, water and air.

In this fun science fair project idea learn the difference between additive and subtractive color and why they are handled differently.

Conduct a simple science experiment to see if flowers from your garden pass the acid-base indicator test with this exciting chemistry activity.

Demonstrate how we are able to locate sounds, echolocation. Have a blindfolded subject locate you by the sound of your clapping.

Introduce your child to the wonders of colorful chemistry with this simple food coloring project.

Here's a fun science experiment that's refreshingly tasty too! Turn regular water into a tasty treat perfect for consuming on a hot day.

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

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

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.