Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.

There is debate about whether chalkboards or whiteboards are better. This experiment explores which leads to better retention of visually-displayed information.

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

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

This project explores the effectiveness of various common household ingredients in cleaning tarnished and oxidized coins.

This science fair project idea determines the most effective method of preserving food.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

Science fair project idea that measures fuel efficiency in cars. Calculate cost per mile by comparing fuel cost and consumption data.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

In this science fair experiment about recycling, demonstrate how the wax from a candle can be reused to make another candle.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

Construct a model of radioactive decay. Learn more about radioactive decay by modeling the process using coin flips.

This project explores whether music affects the growth and health of plants.

Plants and light seem to be good buddies, but how far does the friendship really go?

Examine the impact of insecticides on plant growth.

This science research project challenges students to think of more effective lobster farming methods.

Observe which kind of fresh long-stemmed flower will last the longest after being picked.

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

The goal of this science fair project is to determine which cheese grows mold the fastest: Vermont Cheddar, American, Brie, or Camembert?

Do you think heat can affect a plant's growth rate?

Demonstrate how to tell the age of an egg without having to crack it open.

The objective of this science fair project is to observe the properties of friction and apply this knowledge to search for a near-frictionless surface.

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

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

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

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.

In this project children practice the scientific method while playing with puffy paint.

This science project helps students gain understanding of bioluminescence, the phenomenon that allows fireflies and glow worms to give off light.

Demonstrate the principle of jet propulsion in this science fair project by building a rocket from household materials.

The objective of this free science fair project is to examine the way in which the phases of the moon affect circadian patterns in mammals.