In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

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

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

This science fair project idea determines if the color of light affects the growth of plants.

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

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

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

This basketball project explores the best way to make the perfect shot every time.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

This project determines what category of person is most likely to be ticklish.

Design a survival kit. Brainstorm various survival scenarios. Address basic human requirements and natural resources. Describe each tool as well uses.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

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

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

This science fair project idea explores whether talking to a plant will help it grow.

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

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.