This fun science fair project idea explains what a circadian rhythm is and explores the types of biological activities that follow a 24 hour cycle in mammals.

Science fair project that determines what neurons are, what they do and compiles this vital information in an illustrated book.

This project examines whether sugar substitutes are as sweet as real sugar.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

This biodiversity project examines the biodiversity in your own backyard.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

Science fair project that determines whether windmills can be designed so that birds will not feed on them. Will they discriminate between different patterns?

Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

This science fair project idea examines which is the best way to get rid of water stains (stains caused by just water) on fabric.

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

Explore the relationship between personality traits and birth order effects.

This experiment investigates if small changes in your diet can alter your basal body temperature.

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.

Explore the best way to store popcorn kernels. It examines the impact of moisture and temperature on unpopped kernels.

This fun middle school science fair project idea helps student discover the concepts behind deep sea diving and how Cartesian divers work.

This experiment will explore whether fractals really repeat themselves infinitely.

This science research project challenges students to think of more effective lobster farming methods.

How do organic materials become soil? This science experiment measures what materials biodegrade.

This science project allows students to study the psychology of happiness.

This high school science fair project investigates if small changes in your diet alter the pH of your saliva.

This experiment evaluates whether there is a relationship between grade point average (GPA) and dating status.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

This science fair project idea explores if male or female humans are more likely to exhibit some form of color blindness.

Science fair project that helps visualize how the human brain functions by constructing a model of a brain.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

Check out this hot project idea to culture bacteria and determine if the claims about the anti-bacterial properties of curry and cinnamon are true.

Science fair project that determines whether brain size is correlated with intelligence.