In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

Dinosaurs were huge creatures that left behind huge footprints that lasted for millions of years. In this science fair project, kids learn how dinosaur tracks were left behind!

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

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

Use pepper and soap to discover some fun facts about the properties of water.

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

Test your friends to find out if you can replicate the placebo effect's incredible results.

In this kindergarten activity your child will create a map of your house and use a magnet to move pictures of your family through the house!

In this science fair project, kids will be able to see where germs reside on their hands while gaining insight into the benefits of thorough hand washing.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

Try this fun garden graphing project with your kindergartener this summer to give him a leg up in math and science while spending some valuable time outdoors!

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

This science fair project idea experiments with spinning color wheels and optical illusions.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

This science fair project idea explores whether white light can be separated into different colors.

Let your kid experiment with textures among fabric and other materials that are smooth, rough, soft, or slippery—and then they'll make a texture book!

This science fair project idea explores which fruit molds the fastest.

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.