Science fair project in which you will build your own algae photobioreactor which will meet the physiological requirements of algae for maximum growth.

This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

Science fair project that uses distillation to convert salt water into fresh water.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

This experiment investigates the relationship between the temperature of a candle and its burn rate.

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

This project explores differences in people's reactions to images in color and images in black and white.

This experiment will explore the possibility of a connection between lunar cycles and how humans are affected.

Science fair project idea helps conceptualize probability. Compare probabilities and outcomes of cards drawn from a standard playing deck.

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

This experiment explores the trend of reactivity in the alkaline earth metals as you go down the second column of the periodic table of elements.

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.

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

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

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Which sunscreen is most effective at blocking the sun's harmful UV rays? Test the SPF of various sunblock brands in this cool science project!

Protozoa and ciliate and amoeba, oh my! The objective of this science fair project is for students to use a microscope and identify microscopic life.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

This science fair project idea explores whether talking to a plant will help it grow.

This project determines what percentage of test subjects react adversely to the sound of fingernails on a chalkboard and explores their physiological responses.

Learn about the factors that influence group conformity.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

This science project examines the effectiveness of various types of laundry detergents on stains trapped on a white handkerchief.

Science fair project that determines whether wireless networks damage living plants. Are WiFi radiation hazardous to your health?

Demonstrate how tracks are formed by pressing your hand into a cornmeal mixture, then reverse the process and make prints of the track.

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

In this science fair project, students will learn how to calculate the formula for the thermal decomposition of potassium chlorate.

This science fair project examines the different composition of fungi and plants.

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