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This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).

This science fair project examines whether ocean water can be made safe to drink.

Science fair project that determines the relationship between the temperature and the rate of cricket chirping. How many times do crickets chirp each minute?

This science fair project idea determines whether the older population prefers darker, duller colors rather than bright and lush colors.

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

The objective of this sociologically-inclined experiment is to evaluate whether kids' toy preferences are hardwired or develop as they grow.

Examine the effect of pressure on carbonation in soda.

Determine which material produces the strongest static charge.

Can you win a staring contest? Would your performance be influenced by your eyesight? Find out in this science fair project idea!

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

Did you ever drink spoiled milk? Find out whether whole milk spoils at the same rate as 2% and skim milk.

Help kids tap into their inner inventor by teaching them how to make peanut butter through trial, error, and lots of taste testing!

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

In this science fair project, high school students will try to determine the mathematical patterns in JS Bach's two movement preludes and fugues.

This science project investigates the influence of different genres of movies on appetite.

This science project involves comparing the relative effectiveness of salt, pepper and dehydration in food preservation.

This science fair project evaluates if and how eating a large meal affects ability to perform mental tasks.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

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

This experiment evaluates whether a person's eye color affects their ability to identify colors in low light.

This experiment will evaluate if chewing gum affects students' test performance.

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

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

Use applied math to model orbital eccentricity in this cool science fair project for 7th grade.

Determine which factors promote the greatest memory interference. Administer test, time how long it takes subjects to complete different tasks.

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

introduction to organic chemistry. study what happens when polymer molecules are mixed with borax solution.

Formulate a hypothesis and use the scientific method to determine the guess what is hidden in a box. Test abilities of volunteers, without opening box.

What direction should solar panels face? It's not the direction you might think! This free and enlightening science fair project helps kids discover the answer.