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

What happens when colored beams of light mix? You might be surprised.

What happens when light hits a hard surface? Find out by conducting a simple light reflection experiment with your preschooler.

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 project examines the history of earthquakes and what we can do to prevent future disasters.

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

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.

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

Water can go from solid to liquid to gas...but how does popcorn go from kernel to snack? Invite your first grade scientist to find out.

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.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

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

On the next chilly, winter day, invite your fifth grader to make a hand warmer by experimenting with the loaded combination of a few natural ingredients.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

It's food. It's Thanksgiving tradition. And guess what: Cranberry Sauce is also science! Try our simple recipe/experiment.

In this project students determine which instruments composers use to create birdsongs and birdcalls in classical music.

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

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

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

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.

Before digital cameras, before Polaroids, there was the original pinhole camera. Build a pinhole camera and see what true vintage photography looks like!

This science fair project idea studies how talking on a cell phone affect driving?

What's cooler than an explosion? Not much! This simple science experiment lets kids build their own pop rocket. So put on your safety goggles and let her rip.

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

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.

How do mirrors work? What is light, and how does it travel? Explore light and reflection with your preschooler with these simple hands-on experiments.