Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

In this open-ended activity, students will be given a small quantity of three types of materials and asked to design a prototype for “something that will improve the school.”

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

This science fair project idea examines whether boys and girls differ in reflexes.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

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.

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

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!

Discover which fabrics shrink the most in the wash and why.

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 learner will be challenged to create their own tic-tac-toe grid out of building blocks.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

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

Science fair project which examines the relationship between frequency of spider web vibration and spider's response time.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

In this activity, students will create a stop motion animation by creating a clay figure and taking a series of digital photographs.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

This experiment tests which gender is better at catching how a magician performs his tricks.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.