In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

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

Using a toy race car kids create a visual model of the Doppler Effect.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

Science fair project that examines condensation and the conditions needed in order for dew to form.

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 do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

Test whether plants can grow without sunlight and water.

This science experiment has students test whether a snail moves faster on concrete or dirt.

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

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

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

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

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?

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

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

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

This science fair project teaches students about wilting and browning of salad greens.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Learn about this simple machine and make a pulley of your own to use for fun science trials.

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.