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Save money by making compost! Use this science fair project idea to determine which composting methods best encourage decomposition of organic matter.

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.

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

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

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

This science fair project determines the quality of a given product.

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!

The purpose of this science project is to determine whether the amount of air in a soccer ball affects how far it goes when kicked.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

This project examines whether more expensive golf balls translate into better results on the golf course.

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

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

In this science fair project, young children will become aware of and have the opportunity to experience the four basic tastes: sweet, sour, salty, and bitter.

Determine whether the relationship between a personâs armspan and height are genetic.

Examine the effect of pressure on carbonation in soda.

Determine which material produces the strongest static charge.

This science fair project idea explores which is better for diffusion and cell absorbing, more surface area, or more volume.

Is exercise a cellular activity? Check out this fun science fair project idea to compare the carbon dioxide production before and after exercise.

This project investigates the affect of storage temperature on microwave popcorn.

Get a cool and easy science fair project idea which helps high school students in understanding concepts behind the working of a microphone.

The goal of this science fair project was to evaluate the ElectroMagnetic Field produced by Radio Frequency Identification transmitters.

The goal of this project is to create an exciting topographical map out of dough.

In this experiment we will be determining whether birds prefer certain colors of seed.

Find out whether putting something on top of a plant will inhibit its growth.

Determine which metal has the highest rate of conductivity.

This science fair project investigates which of two learning modes most commonly used in school, visual and auditory, is better for information retention.

This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

Does 100% Fruit Juice have more Vitamin C than juice with artificial ingredients? Find out in this science fair project idea!

The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.