Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Make a backbone model to explore human anatomy and life science.

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

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

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

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.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

Learn the basic structure of a DNA strand, which is the double helix, how genes form together, and the resemblance DNA has to a twisted ladder. Create a model.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

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

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

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.

This science fair project idea determines which method of hand cleansing is the most effective.

This simple project makes young children aware of their sense of smell and its capacity for providing them with information about their world.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

This play-activity causes young children to focus on and become more aware of their sense of hearing and the power of their ears.