How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

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

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

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

This science fair project idea explores whether talking to a plant will help it grow.

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

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.

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

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

Show your child how and why the microwave works, while demonstrating just how strangely foods can behave while inside the crazy cooker.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

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

Teach your child how butter is created by shaking up cream the old-fashioned 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.

A homemade lava lamp gives any room a retro flair. Find out how to make a homemade lava lamp, and learn some science too, with this educational activity.

Take a look at forensic science with your child. She'll learn how to take a shoe impression, just like the detectives do!

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.

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.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

Deck the halls with last season's Christmas lights for a spectacular and electrifying science activity.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Believe it or not, images that are cast upon your eye's light-sensitive screen (called the retina) are upside down. Here's a fun, fast experiment to prove it!

This science fair project idea investigates which objects float and sink in honey, water, and oil.