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!

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

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

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

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.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

In this science fair project, students use the streak test to tell minerals apart from each other.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

This science fair project will help students learn about non-vascular plants, such as mosses.

This project compares the strength of one, two, and three-ply toilet paper.

In this project children practice the scientific method while playing with puffy paint.

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

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

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 project students experiment with making music using only glasses of water.

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

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

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!