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!

In this science fair project, students make their own rain gauge to measure rainfall.

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

In this science fair project, students focus sunlight with a magnifying glass and trap shorter waves to melt ice.

Science fair project which evaluates different athletic shoes in order to find out whether any of them affect a person's ability to run.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

This science fair project idea explores the different properties & interactions of sugar molecules.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

The project examines absorbent polymers absorbency in disposable diapers and their unique ecological problem to the environment.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

In this project, the fingerprints of family members are compared to determine if people from the same family have similar fingerprints.

This science fair project idea investigates the difference in reaction times between boys and girls.

This experiment examines whether storing your orange juice at different temperatures affects its acidity.

In this experiment you will replicate the mummification process by making a hot dog mummy.

The project determines which laundry detergent is best for cleaning clothes.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

This science fair project idea identifies clouds as a means of predicting the weather.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

This science fair project idea teaches to understand and explore the concepts of crystal formation and dissolving substances.

This science fair project enhances the understanding and awareness of energy use and explores the concept of energy efficient.

This science fair project idea examines how well individuals can remember a story they were told and how accurately they pass that story along.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.