What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Start your toy engines -- this is going to be a fast and friction-filled race!

In this CD hovercraft science project, students will construct their own DIY hovercraft.

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

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.

Chemistry is a blast with this backyard bomb made from a sandwich bag. All you need are ingredients from the pantry to create a satisfying, and safe, explosion.

Kids will love making sugar crystals in this sugar crystal science fair project which teaches important chemistry concepts like saturation and solubility.

This project examines Newton's First and Second Laws of Motion with a bicycle and water balloons.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

In this fun activity, your child will create their very own solar oven to bake s'mores!

Have your child kick off their summer vacation by making a miniature water slide!

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

The project determines the forces that cause paper airplanes to fly and determine which type of paper airplane flies the farthest.

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

Discover how and which salt melts ice the quickest.

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

Check out this cool science fair project on identifying rocks and minerals for kids.

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

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

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

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

Teach your fifth grader about the wonders of wind by making and observing this winter wind chime.

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

Incorporate some math and science thinking into your annual fall fun with this pumpkin investigation activity! Your child will have a blast investigating various ways of measuring pumpkins, making estimates, taking measurements, and recording their findin

Create safe lightning for kids! They'll learn how to make lightning at home with this fun science fair project idea illustrating static charges and grounding.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

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

In science fair projects, middle school students discover why nitrogen fixing bacteria are important to plant growth.