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 cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

In this project, vinegar and salt act as preservatives keeping bacteria from growing in the bouillon mixtures.

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.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

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

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

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

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

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

In this project, waves of vibrations are experimented with using water in glasses.

This science fair project idea investigates the difference in reaction times between boys and girls.

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

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

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.