This science fair project idea explores which is better for diffusion and cell absorbing, more surface area, or more volume.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

This middle school science fair project determines whether DNA is most easily extracted from under-ripe, ripe, or over-ripe strawberries.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

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

Science fair project that determines what neurons are, what they do and compiles this vital information in an illustrated book.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

Science fair project that determines which materials cause the most friction by sliding blocks of wood down a ramp.

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

Check out this cool middle school science fair project idea to determine if shopping carts are really carriers of harmful bacteria.

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

This science fair project explores different types of endangered frogs, and why some are endangered while others are not.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

What is the Doppler Effect, or the Doppler Shift? The purpose of this science fair project is to determine how distance impacts the Doppler Effect.

This cool middle school science fair project idea helps students explore the role phototropism plays in the growth of green plants.

Melt the ice, but save the lawn. The objective of this science fair project is to explore the effects of different substances on melting ice.

Check out this cool science fair project idea on spectrum spinners and investigate how certain color combination can produce other colors.

This science fair project idea focuses on the use a conductivity device to determine the ionic concentrations of hard water.

In this science fair project on the relationship between distance and time, kids explore the behavior of gravitational acceleration through direct observation.

The purpose of this science fair project is to investigate which food wrapping works best to keep refrigerated and non-refrigerated foods from spoiling.

Will people still feel hungry once they eliminate grains from their meal? Find out in this science fair project idea!

Will your liquid weigh less once you remove the fat from it? Find out in this science fair project idea.

Explore this fun science fair project idea to investigate different microclimates in and around your home and their effects on the plant and animal life.

This science fair project idea determines whether dogs can be trained faster using a food reward or praise.

This science fair project tested various nose cones to determine which would be the most ideal shape for propelling a water rocket.

Compare the amount of ozone in various locations with this science fair project that will have your kid create her own ozone strips!

This science fair project idea addresses tempo, and whether faster or slower music works better as a study aid.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

Check out this fun science fair project idea to learn about seismic waves and how fast they travel during an earthquake.

Free science fair project idea that measures change in flexibility with age, using a variety of flexibility tests like Sit & Reach.