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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.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

Will male or female hair grow faster? Find out in this science fair project idea!

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

The objective of this science project is to determine the length of time for different seeds to germinate.

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

Determine which metal has the highest rate of conductivity.

Science fair project that measures the relative times it takes a plastic bag and a biodegradable plastic bag to decompose.

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.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

Investigate the different ways in which objects and organisms can be classified, create your own. then have volunteers classify using their own systems.

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.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

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?

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

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.

The purpose of this science fair project is to determine whether Green Bags, with or without refrigeration, are most effective in preserving food.

The goal of this science fair project is to evaluate the effect of heat on sound wave frequency.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Science fair project that demonstrates that rotting food attracts insects that lay eggs on it.

How do cold packs work? Explore endothermic reactions by comparing the temperature change that results from various chemicals added to water to find out!

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

This experiment determines the distribution of darts around a bulls eye to simulate the probability of an electron's location in its own cloud of electrons.

This project determines how much the rebound rates of tennis balls change after ten games.

In this experiment you will become familiar with the properties of dry ice while creating interesting effects like ice bubbles!