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

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Free science fair project idea that examines cheating in school-age children. Project involves a task in which children are tested on various tasks.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

Science fair project that demonstrate how abrasions are formed on rocks in nature and the variations between types of rocks.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

This experiment evaluates if people have an accurate perception of how much personal time they spend interacting with technology.

This science fair project idea raises awareness of a real ecological issue.

This science fair experiment examines the relationship between gender, age, and smiling.

This experiment will explore whether adding different substances to a gel affects its strength.

Science fair project which determines which colors of light allow plants to produce the most chlorophyll. How are color and light related to each other?

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

Looking for a fun earth science project on continental drifts? Check out this fun science fair project idea to explore how Pangaea may have broken up.

Explore concepts in current and coltage with these Van de Graaff generator experiments.

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

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

This science fair project idea explores whether the color of surroundings affects human mood.

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

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

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

Science fair project about different digital image file types, compares different encoding algorithms used to compress the data.

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

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

Science fair project that compares the relative carbon dioxide concentrations of various gases, including different types of vehicle emissions.

Explore the effect of wind speed on the burning rate of a candle.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

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