This science fair project teaches students the differences between fruits and vegetables.

Use pepper and soap to discover some fun facts about the properties of water.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

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

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

This project compares the strength of one, two, and three-ply toilet paper.

In this science fair project, young children notice and track changes in trees throughout the year.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

This science fair project idea determines what household items are good conductors of electricity.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

This project makes young children uniquely aware of their sense of touch and its ability to alone give them information about the world around them.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

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

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

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

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

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.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

This project determines what category of person is most likely to be ticklish.

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

This science fair project idea explores whether talking to a plant will help it grow.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.