Discover which fabrics shrink the most in the wash and why.

This science fair project idea discovers whether plants grow best in chemical fertilizer, organic fertilizer, or with no fertilizer at all.

Does nail polish really slow the growth of nails? Explore in this science fair project idea.

In this science fair project, students determine whether a bean plant grows faster and taller using a traditional soil planting method or hydroponic method.

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

This science fair project idea explores whether dry ice will cool a beverage faster than wet ice.

This basketball project explores the best way to make the perfect shot every time.

This science fair project idea demonstrates sonar mapping of the ocean floor.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Determine how different measurements of the same object might yield different values. Provide as many reasons that you can think of.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

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

The objective of this science fair project is to determine whether there are gender differences when boys and girls view optical illusions.

Determine which environment keeps an ice cube frozen for the longest duration. Inspect and record your observations when cubes melt.

This science fair project idea determines whether eating before or after exercise is more beneficial to health and performance.

Learn how to relight a candle by lighting the vaporized wax in the smoke, and test how various kind of wax and candle brands relight differently.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

This science fair project idea explores discover whether mixing solutions of equal distances from neutral pH (7) will create a solution close to pH 7.

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.

Science fair project idea examines different techniques for memorization. Analyze results of memory tests to determine which method is most effective.

This science fair project explores discover whether the acidity of sour candy is comparable to that of battery acid.

This science fair project idea studies whether eating a hearty breakfast before and exam will get them better test scores.

This social science experiment endeavors to determine whether certain types of animals provide greater physical and mental health benefits to their owners.

Science fair project in which you will create your electricity by making a homemade battery using salt water, a nail, and a copper wire.

This project examines who can jump higher, boys or girls, younger people or older, and how these two factors, gender and age, interact with one another.

This science fair project idea quantifies the effect of weather- in this case temperature and humidity- on musical instruments.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

Discover whether eating certain foods will make you smell (not only bad breath) but through skin cells.

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!