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.

This exploration of different types of energy will help young minds appreciate and observe thermal, kinetic, mechanical, and other forms of energy.

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

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

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!

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

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

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

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.

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

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

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

What is the Doppler Effect, or the Doppler Shift? The purpose of this science fair project is to determine how distance impacts the Doppler Effect.

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

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

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

Show your teen how to make her own beeswax lip balm. It's one of the simplest do-it-yourself activities, and it's fun to make!

Set your teen on the beat in a real world "crime scene" investigation. Can he tell whose fingerprints are on a drinking glass?

Want to give your teen some insight into the scientific method and get the house cleaned? This activity promises both!

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.

Science isn't ho hum anymore when it involves building catapults to teach your fifth grader about projectile motion.

This science fair project idea demonstrates sonar mapping of the ocean floor.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Here's an investigative activity in which your child will discover real-world names and uses for sugar and find out how it is hidden in many different foods.

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.

This science fair project idea produces varying pitches of sound.

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

In this challenge, students are tasked with creating a car that can be powered by a balloon!

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