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

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

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

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

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.

Plants and light seem to be good buddies, but how far does the friendship really go?

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

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.

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?

In this activity, your child will be challenged to make a tower using paper cups.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

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

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

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

In this experiment you will replicate the mummification process by making a hot dog mummy.

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

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

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

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

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

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

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