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

Find out whether packaged seeds actually do expire in this new science fair project idea.

Get your child outside to observe the clouds, and get a fun exercise in science, writing, and arts and crafts! Here's how.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

This science fair project idea explores substances that cause a bubble to last longer.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Do you think heat can affect a plant's growth rate?

This science fair project idea determines if the color of light affects the growth of plants.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

Learn how to grow an avocado plant indoors with your 1st grader in this hands-on gardening activity.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

Help your curious third grader construct a dazzling spinning wheel that will teach him about the science behind colors while providing some silly entertainment!

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

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

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

If your child aspires to be the next Frank Lloyd Wright, we've got some tips on building sand castles that last.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.