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.

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.

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

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

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.

In this project children practice the scientific method while playing with puffy paint.

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

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

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.

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.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

In this project students experiment with making music using only glasses of water.

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

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 determines the most effective method of preserving food.

This easy at-home experiment is a great way to "see" science.

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

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

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

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

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

This experiment uses a yeast solution, liquid detergent, and hydrogen peroxide to produce an exciting reaction like no other!

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

Your child will create her own falling snowflakes using white paper and glue them over a tree, so it appears as if they are falling from the sky.