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.

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.

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.

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.

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 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.

Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

This science fair project idea explores whether white light can be separated into different colors.

This science fair project idea experiments with spinning color wheels and optical illusions.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

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

This science fair project idea explores whether color affects a person's emotional state.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

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

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.

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

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.