How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

This classic children's game demonstrates how sound travels through air vs. through a solid.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

This science fair project idea explores how length affects the weight a bridge can hold.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

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

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

Plants and light seem to be good buddies, but how far does the friendship really go?

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

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

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

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

This project examines whether people's taste perception is influenced by what they see.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

This science fair project idea investigates how the shape of an object affects drag.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

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.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

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

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

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

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.