This science fair project idea determines if the temperature of rubber effects how high it bounces.

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

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

Discover that the absorbency of fabrics depend largely on the shape and structure of the individual fibers that make up the fabric.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

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.

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!

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

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.

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.

Teach your creative second grader about proportions, animals, and proper cutting methods with cucumber carving.

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

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

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

Your child might have noticed how bubbles quickly lose their colors and pop. Check out this creative way to make those bubbles last longer.

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!