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This science fair project idea investigates the difference in reaction times between boys and girls.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

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.

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

This science fair project idea investigates if webbed feet help a duck (and others) swim.

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

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

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.

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

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

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

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!

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

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

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.

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

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

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

In this simple circular motion experiment, you'll observe tangential velocity and learn about how acceleration and centripetal force affect an object.

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.