This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

In this experiment you simulate radioactive decay in order to gain an understanding of the basics of half-life.

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

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

Science fair project that determines how your mirror image differs from your actual image and how virtual images are constructed.

Determine whether people can actually taste the difference between âhealthyâ cookies and the traditional version.

Study the physical and chemical changes that make hair curl or straighten. Study ingredients, function of chemicals like thioglycolic acid.

This science fair project idea examines the reason boats are shaped and engineered.

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.

Measure the densities of various fruits and vegetables to determine if there is a relationship between density and nutritional value.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

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.

This science fair project examines the vein structure (venation) of leaves in order to determine the class of the plant sample.

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

This science fair project idea determines what household items are good conductors of electricity.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

Science fair project that compares tree leaf size and shape based on the leaf's position in the tree. Is their is a noticeable difference between high and low?

Use a microscope in this experiment to learn about different kinds of "good bacteria" that turn milk into yogurt!

The purpose of this project is to determine if there are fluctuations in the rising and the setting of the sun and the position of the earth as it rotates.

Research and understand basic computer science. Build a simple computer, following instructions found online. Design a new or improved feature.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

This experiment will explore if a randomly iterated algorithm will result in a pattern.

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

The goal of this science fair project was to examine how different angles of decline affect the tipping point of a vehicle.

This science fair project idea demonstrates how our fingers prune when in water.

This science fair project idea studies which brand of wintergreen candy produces the most sparks in the dark.

Science fair project which measures the amount of heat energy released by a burning candle by calculating how many calories of heat it emits.

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

Check out this free high school science fair project to explore the physics of the Coriolis effect with a homemade Foucault Pendulum.