Use dirt and different colors of craft sand to make unique layers in a clear plastic cup to represent the layers of the Earth.

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Blanket forts are a kid classic! Let your child create a âfortress of solitudeâ on his own for reading, telling scary stories or for cozy cocooning.

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

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

Help your child build her very own science laboratory at home for experiments and science projects. This is a quick, easy, and fun educational tool!

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

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

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

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

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!

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.

The objective of this science project is to determine the length of time for different seeds to germinate.