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

How clean is the air we breathe? The answer might surprise you. Learn how to investigate local air quality with this cool science fair project.

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!

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

Wonder why bugs always fly around your lights at night? This experiment determines whether insects are attracted to the heat or the light.

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

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

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

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

With Halloween right around the corner, find a way to use your brain and reward your tummy with a new type of science -- candy science!

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.

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

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.

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.

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 examines the reason boats are shaped and engineered.

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.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

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

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.