Which public places harbor the most bacteria and germs? Test different environments to find out where the most bacteria live in this science project.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

This social science experiment assesses whether the timing of peak mental performance shifts from afternoon to morning as we age.

Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.

Explore the relationship between personality traits and birth order effects.

What happens when colored beams of light mix? You might be surprised.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

Chemistry is a blast with this backyard bomb made from a sandwich bag. All you need are ingredients from the pantry to create a satisfying, and safe, explosion.

Research what is known about Alzheimer's disease and its treatment, and then prepare a script for television to educate the public.

Help your preschooler craft a homemade wind spinning device--a surefire to make your backyard sparkle, and teach her a bit about weather!

In this science fair project, high school students will try to determine the mathematical patterns in JS Bach's two movement preludes and fugues.

Your preschooler can learn how to siphon water with just two bottles and a plastic tube in this fun, educational science activity.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

This fun science project explores the climate change over the course of the history of Earth and helps construct a diorama representing a geologic time period.

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

This project examines germs and their spread in households. The goal is to learn how to stop the spread of germs and other diseases.

Check out this fun science project idea to explore different types of starches and learn how removing starch affects the quality and taste of food.

This science fair project determines which of two chemical agents can be used to release the drug (tea) from hydrogel crystals.

A project to reinforce learning about the layers of the rainforest, rain forest ecosystem, and the greenhouse effect.

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

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

Learn how to grow an avocado plant indoors with your 1st grader in this hands-on gardening activity.

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

Discover which method for odor removal words the best for stifling refrigerator odors.

This project determines what percentage of test subjects react adversely to the sound of fingernails on a chalkboard and explores their physiological responses.

Science fair project which determines which colors of light allow plants to produce the most chlorophyll. How are color and light related to each other?

Give your budding young observers a chance to discover simple machines at use in their own home.