Alive or not? This yeast experiment you can conduct with your little scientist explores the answer to this timeless question.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

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

Discover how and which salt melts ice the quickest.

In this science fair project, young children notice and track changes in trees throughout the year.

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

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

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

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

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

This project makes young children uniquely aware of their sense of touch and its ability to alone give them information about the world around them.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

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.

Show your preschooler how to make a print of a butterfly using her hand as a tool--a great way to stimulate her sense of touch.

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.

Here is a kindergarten activity that blends art and science by using magnets, paint, and objects found around the house to create a picture.

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.

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

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