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

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

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

In this science fair project, students use the streak test to tell minerals apart from each other.

In this project students experiment with making music using only glasses of water.

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

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

Create your very own scented hand sanitizer that will help your child to keep those nasty germs at bay!

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

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

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

Do different types of oil mix or stack? Find out in this science fair project idea!

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

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.

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

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

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

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.

We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.

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

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

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.

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

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

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

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

Children will learn why and how to compost as they help with the process of filling their compost, turning it, and observing the changes that occur.