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.

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.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

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

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

This science fair idea project identifies the active ingredients in soap and experiments with the properties of soap.

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.

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

In this open-ended activity, students will be given a small quantity of three types of materials and asked to design a prototype for “something that will improve the school.”

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

This science fair project idea provides evidence that air is everywhere and takes up space.

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.

This science fair project idea observes products available in the school cafeteria and waste produced by these products.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

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 determines whether it is numerically possible to be connected to every person on the earth within six degrees of separation.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

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.

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

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

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

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

This science fair project examines how seeds hitchhike on animals and clothing.

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.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

This science fair project explores how osmotic pressure forces water through the root up into the plant.