Use a dichotomous key to identify plants or animals.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

This science fair project determines the quality of a given product.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

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

This science fair project idea examines which is the best way to get rid of water stains (stains caused by just water) on fabric.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

Slime mold is no longer classified as fungi! So what is it? In this cool science fair project, learn how to grow slime mold and explore its behavior.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

What is a series circuit and how does it work? Learn about voltage, electrical current, and resistors in this cool science experiment!

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

Check out this fun science project idea to measure the amount of vitamin C in ripe, half-ripe, unripe and stored oranges.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

Get a cool middle school chemistry project idea on how to determine whether a physical or a chemical change has taken place.

This science fair project idea studies the differences in gender perception between people.

The purpose of this science fair project is to investigate whether we can simulate how craters are formed and predict their size and shape.

Get a cool science fair project idea for middle schoolers on the effect of adding sugar to the growth of green plants.

Check out this cool and free middle school science fair project idea on how to make a solar oven.

People have favorite flavors, but what about ants? Which ant food is the most popular?

This science fair project teaches students about wilting and browning of salad greens.

How do search engines work? What makes various search engines different? This project delves into the world of web crawlers, caching, indexing and algorithms.

This science fair project idea focuses on the production of oxygen by plants during the photosynthesis process.

The objective of this experiment is to evaluate the effects of acid rain on plants.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

Can cells be frozen? This science fair project provides information to answer this question.

The objective of this science experiment is to evaluate the affects of high and low heat capacity on a material's heat retention ability.