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

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

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.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

Here's a pressed leaf card project that puts science and writing together for your second grader.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

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.

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

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

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Discover how and which salt melts ice the quickest.

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

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

Is it a square or a circle? See if you can trick your friends with this zany science project!

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

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

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.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

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.

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.