This science fair project idea teaches about the size of two different systems: the solar system and an atomic system.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Learn about how we localize objects and beings in space through sound and about monaural auditory mechanisms and binaural auditory mechanisms.

In this science fair project, students investigate the applicability of Benford's Law to many sets of everyday data.

This project examines whether humans can intuitively grasp numeric values greater than three.

Fibonacci sequences have been observed throughout nature, like in leaves and flowers. In this project, students find examples of the Fibonacci sequence.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

It's the day before the test, and you still have a ton to memorize! Sound familiar? Test memorizing techniques to help yourself out next time.

In this experiment, you will find out how human error can cause faults in any science task. This includes experiments conducted by famous scientists also.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

In this project students learn about the golden ratio and investigate if it can be used to predict people's assessment of beauty in others.

Evaluate gender differences in processing visual information.

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

Science fair project which determines whether it is numerically possible to be connected to every person on the earth within six degrees of separation.

Learn about our cognitive capacity of attention and to learn about factors that influence attention.

This science fair project idea tests the efficiency of short term memory.

This science project examines the thermal properties of several major greenhouse gases.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

Check out this cool science fair project idea to explore short and long term memory and whether there is gender differences in memory.

Science fair project that tests the correlation between outdoor temperature or weather conditions and the number of visible stars at night.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

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

This science fair project idea investigates how different disinfectants work in killing germs.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

Find out whether matte or shiny nail polish lasts longer.

Explore the neural and mental mechanisms at play in mental imagery.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

Science fair project which helps you determine your latitude by using an astrolabe, which measures the angle between the North Star and the horizon.