Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

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

A cool physics science fair project idea for 7th grade exploring the application of distance, velocity, and time equations.

This project examines the amount of saltwater required to affect the growth of plants and subsequent effects on growth and development.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Learn how the focal length of a lens affects a magnifying glass's magnifying power in this cool science fair project idea for 8th grade.

This fun science fair project for 8th grade demonstrates what Kepler's 3rd law predicts about a planet's orbital period and its distance from the sun.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

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

Find out whether packaged seeds actually do expire in this new science fair project idea.

This science project challenges high school students to study the linguistic evolution of text messaging.

This project determines whether hands-on practice, mental practice, or no practice leads to better shooting of free-throws.

This experiment will explore if magnetism has any effect on the regeneration abilities of flatworms.

How do organic materials become soil? This science experiment measures what materials biodegrade.

Free science fair project idea examining how different types of water affect plant germination and growth.

In this science fair project, students examine how the flow rate in a stream affects the growth of aquatic plants.

The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.

This science fair project challenges students to research and interact with the animals and plants that live in tide pools and test a practical use of tidepools

Look at people's face shape. Do you think their face shape affects your perception of kindness? Find out more in this science fair project idea!

This study observes plants, insects and an animal living in proximity to a known source of EMF.

The objective of this science fair project idea is to find out whether refrigerating cosmetics will extend their shelf-life and longevity.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

This science project involves comparing the relative effectiveness of salt, pepper and dehydration in food preservation.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

The objective of this project is to examine the ways in which a passive solar house may contribute to conservation of energy.