This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

In this fun experiment, we'll find out how color affects heat absorption!

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Science fair project the demonstrates Newton's Third Law using a milk carton filled with water.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

In this science fair project, students make their own rain gauge to measure rainfall.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

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.

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.

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.

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

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.

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.

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.

This science fair project idea identifies trees using a dichotomous key.