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

A simple science experiment exploring the physics of water pressure that's been amazing people since Medieval times.

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?

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

This science fair project idea determines the probability of a coin landing heads or tails.

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

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.

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.

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

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

Science fair project which examines the relationship between frequency of spider web vibration and spider's response time.

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

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.

This science fair project idea explores whether cats can be trained in the same way that dogs can.

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

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

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

In this fun experiment, we'll find out how color affects heat absorption!

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.

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

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.