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!

Science fair project that helps visualize how the human brain functions by constructing a model of a brain.

This science fair project compares the abilities of men and women to understand subtle communication through body language.

This experiment investigates if stress alters body temperature.

In this arts and crafts activity, let your kindergartener create life-sized body stamps using some paint and his own hands and feet.

The human knot game is a perfect team-building exercise and a fun activity that's sure to bring lots of laughs along the way.

Do human lie detectors exist? Charge up your powers of observation to see if you can tell a lie from the truth.

In this experiment, you will find out how human error can cause faults in any science task. This includes experiments conducted by famous scientists also.

This experiment investigates if small changes in your diet can alter your basal body temperature.

Do dogs understand English? Kids will find out with one of our favorite dog science fair projects that tests how dogs process human language and other cues.

This science fair project idea explores if male or female humans are more likely to exhibit some form of color blindness.

This science fair project idea discovers which parts of the body are more sensitive to touch than other parts of the body.

This experiment investigate whether children in different age groups learn better from a computer program or a human teacher.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

This science fair project idea explores how far the average human can see.

This science fair project idea determines how your body responds to allergies.

This science fair project idea explores whether the color of surroundings affects human mood.

This science fair project idea explores the fastest average speed a human can talk.

This baseball science fair project explores the concept of an object's center of percussion to determine if the "sweet spot" has a scientific basis.

Is your precocious third grader a Shakespeare in the making? Challenge her growing vocabulary with a group game that rewards her wordy ways

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

This easy-to-make perfume powder will keep your kid smelling fresh and clean. Got a birthday or special occasion coming up? It also makes a great gift!

Teens can enjoy a day at the spa without the expense with this quick and sweet exfoliating scrub recipe.

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

This science fair project idea investigates whether body language and heart rate can decipher who's lying and who's not.

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

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

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 experiment will explore the possibility of a connection between lunar cycles and how humans are affected.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.