Free science fair project idea that measures change in flexibility with age, using a variety of flexibility tests like Sit & Reach.

Check out this fun science project idea to measure the amount of vitamin C in ripe, half-ripe, unripe and stored oranges.

How do crystals form? In this science fair project, students will use three different saturated solutions to see how different minerals form crystals over time.

Wonder why bugs always fly around your lights at night? This experiment determines whether insects are attracted to the heat or the light.

Find out which kind of bubble wrap fares best when put in impact.

In this science fair project, students evaluate test subjects to determine if certain personality traits are more common in frequent users of social media.

This science fair project idea provides evidence that air is everywhere and takes up space.

This science fair project idea explores which fruit molds the fastest.

Research optical illusions and human auras. Understand why the probable cause of perception is mach bands.

This science fair project introduces children to static electricity and the idea that electricity is more than lights and plugs.

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

In this science experiment, test the pH of soil surrounding a gas station to determine if gas stations have a negative effect on the environment.

Test the combustion of different types of woods.

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 investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

Read on this high school science fair project idea to get basic information on the process of heat transfer and the conditions under which the transfer occurs.

This science project teaches students about organic farming and the benefits and disadvantages of commercial plant food.

This experiment investigates whether font choice affects peoplesâ ability to remember the information that they read.

Will people perceive your intelligence differently depending on your hair color? Find out in this science fair project idea!

Science fair project that studies how the brain transforms man-made symbols into meaningful concepts.

Do suds equal more clean or does a sud-free cleaning agent works just as well or even better?

Study how we perceive color by exploring optical illusions such as pointillism, digital images, and Ishihara tests.

Science fair project that demonstrates that rotting food attracts insects that lay eggs on it.

This simple project makes young children aware of their sense of smell and its capacity for providing them with information about their world.

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

This science fair project evaluates the suggestibility of males versus females in copying the actions of those around them.

This science fair project idea explores whether color affects a person's emotional state.

Can cells be frozen? This science fair project provides information to answer this question.