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.

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

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

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

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

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 that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

This science fair project idea produces sounds by creating vibrations using different objects.

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

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

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 science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

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