This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

Dive into the world of cooking oil and smoke points to discover just how fast some oils start smoking.

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

This science fair project idea studies which brand of wintergreen candy produces the most sparks in the dark.

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

This science fair project idea studies which kind of rock (sedimentary, igneous, or metamorphic) is most damaged by frozen water.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Find out whether optical mice are useful on all surfaces or if there are drawbacks to this supposedly superior solution to the traditional roller-ball mouse.

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

Determine if gender affects the ability to identify different smells.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

This science fair project idea determines the probability of a coin landing heads or tails.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

This science experiment has students test whether a snail moves faster on concrete or dirt.