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

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.

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.

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.

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.

In science fair projects, middle school students discover why nitrogen fixing bacteria are important to plant growth.

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.

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

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

This science fair project idea determines if the color of light affects the growth of plants.

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.

Science fair project idea examines different techniques for memorization. Analyze results of memory tests to determine which method is most effective.

Check out this fun science project idea to get a better understanding of unstable isotopes and the process of radioactive decay of isotopes through modeling.

Determine if certain colors of light are more effective for photosynthesis. Plant seeds in cardboard boxes with different light, record visible growth.

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

This science fair experiment organizes made-up elements to simulate Mendeleev when he made the periodic table of elements.

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

Discover if temperature settings in a fridge make a drastic difference in terms of bacterial growth.

Assess physical and mental states of subject before and after drinking coffee. Compare initial expectations with their reported conditions.

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!

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

This project explores the interaction between air pressure and playing surface in determining a basketballâs bounce.

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.

The goal of this science fair project was to examine how different angles of decline affect the tipping point of a vehicle.

Science fair project in which you will build your own algae photobioreactor which will meet the physiological requirements of algae for maximum growth.

Science fair project that demonstrates how stalagmites and stalactites are formed.