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Determine if âdouble dippingâ chips really spreads more germs than dipping only once per chip.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

This science fair project determines if the allelopathic chemical produced by the black walnut tree biodegrades immediately or persists over several days.

Is the birthday paradox really a paradox, or just an intriguing problem that defies intuition? Find out with this birthday paradox science fair project.

This science fair project idea discovers the effect of (high) heat on animal cells.

The objective of this science fair project is to assess the benefits of the game system for improving player performance following use.

The goal of this science fair project is to assess the acidity levels of common food and household products using pH test strips.

This science fair project idea focuses on two classes of sugars monosaccharides (fructose) and disaccharides (sucrose or table sugar).

In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

Learn about our cognitive capacity of attention and to learn about factors that influence attention.

Science fair project in which you will graft branches from different fruit tree onto a root stalk.

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

Science fair project in which you will start a fire from scratch without using matches or a lighter.

In this cool experiment, learn about the forces of resistance in a liquid and race marbles in a cylinder to find out which fluids have a high viscosity.

Learn about the effect of artificial light on plant growth versus natural sunlight and delve into some biology and botany concepts in this science project.

In this wind tunnel experiment, you'll make a wind tunnel to test lift and airflow on a model plane and explore aerodynamics and the Bernoulli Principle.

What kind of fabric holds dye best? How can you improve a dyed fabric's colorfastness? In this colorful project, test colorfastness using mordants and bleach.

High school students learn about resistance, resistivity, and if copper is the best metal conductor in this great physics science fair project idea.

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 teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

What if the shape of the Earth weren't spherical? How does its shape affect our gravity, climate, and tides? Model these questions in this cool project!

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

This science fair project focuses on the use of a conductivity device that will determine if a substance dissolved in water can or cannot conduct electricity.