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

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

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.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

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

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

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

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.

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

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

The objective of this science project is to determine the length of time for different seeds to germinate.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

In this activity your child will create their very own marble maze!

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

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

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

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

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

Discover whether cold or hot water from the faucet will boil faster on the stove.

Test whether plants can grow without sunlight and water.

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

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