Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

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

How to test for acids and bases? In this activity you and your child can make your own indicator from red cabbage!

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

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

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.

Get a cool and easy science fair project idea which helps high school students in understanding concepts behind the working of a microphone.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

The goal of this science fair project is to assess the acidity levels of common food and household products using pH test strips.

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

This project determines what percentage of test subjects react adversely to the sound of fingernails on a chalkboard and explores their physiological responses.

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

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

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

Invite your middle schooler to bungee jump ... with eggs! This experiment will demonstrate Newton's laws of physics in an entertaining way.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

Here's a fun activity to reinforce the physics concept of stored energy for your middle schooler.

This experiment investigates whether there are certain sounds that affect men and women differently

This potato cannon activity teaches your middle schooler about the principle of Boyle's Law. Make a potato cannon and have a blast learning about science.

Start thinking about how the internet works by assembling an Ethernet cable of your own!

This experiment will explore how mallets of various materials and weight create sonic tones of varying lengths.

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

Learn with makes water molecules work with this fun and easy science activity!

In this science fair experiment, students learn about the scientific principles behind Doppler ultrasound.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

Experiment with magnetism in this 8th grade science activity in which your child will create a working compass using a steel needle, magnet, and jar.

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