How do organic materials become soil? This science experiment measures what materials biodegrade.

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

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

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.

This science fair project examines how seeds hitchhike on animals and clothing.

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

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

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

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

This science fair project idea demonstrates that plants give off water.

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

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

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

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

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

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

This science fair project idea investigates how magnetism can defy the force of gravity.

This science fair project idea investigates if fats add to the flavor of food.

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

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

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

This science fair project will help students learn about non-vascular plants, such as mosses.

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

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

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.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

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

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.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.