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

In this science fair project, students will use four different household objects to see which ones form the most or best crystals.

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!

Do heavier objects fall faster than lighter ones? Students learn the answer by watching the effect gravity in a vacuum has on a coin and a feather.

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

This science fair project idea demonstrates how our fingers prune when in water.

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 project idea to get a better understanding of unstable isotopes and the process of radioactive decay of isotopes through modeling.

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

In this science fair project, students investigate how different colors influence appetite.

In this science fair project, students evaluate the alleged pain-relieving properties of amber.

Why are some pennies shiny and others dark and dull? Find out with this cleaning copper coins experiment, which transforms dark pennies to bright ones.

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

This experiment investigates whether left-handed test subjects have better memories than right-handed participants.

Test whether spot magnets can help improve the symptoms of an injury.

Science fair project idea helps conceptualize probability. Compare probabilities and outcomes of cards drawn from a standard playing deck.

Your child grows a green thumb and flowers with this seed planting activity that also celebrates the 100th day of school!

This experiment investigates whether the psychological phenomenon of the halo effect can be used to explain people's perceptions of others.

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

This science fair project idea explores discover whether there are any patterns or trends in the memories between different genders.

This science fair project idea explores substances that cause a bubble to last longer.

This experiment investigate whether children in different age groups learn better from a computer program or a human teacher.

It has long been believed that weather influences mood and behavior. This experiment will evaluate if weather can really impact the way people feel.

Here's a fun activity that will have your child researching, collecting, and charting plant specimens from the neighborhood.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

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

Discover whether people can distinguish what a person looks like just by listening to their voice.