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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.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

This project explores how and how much one family can reduce the amount of garbage they accumulate over a three month period.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

This project compares test subjects' responses to whining and other "attachment" and attention-getting sounds to determine which sounds are most distracting.

Wonder why bugs always fly around your lights at night? This experiment determines whether insects are attracted to the heat or the light.

How do search engines work? What makes various search engines different? This project delves into the world of web crawlers, caching, indexing and algorithms.

Research hemispheric brain dominance in order to determine if you have a dominant side. Test foot, ear dominance. Record observations.

This project is about after-images and what possibly affects them.

This science fair project idea studies the differences in gender perception between people.

Science fair project determines relationship between number and variety of insects and spiders by collecting and counting invertebrates in a ecosystem.

Explore the best way to store popcorn kernels. It examines the impact of moisture and temperature on unpopped kernels.

Determine which metal has the highest rate of conductivity.

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

This project examines whether corked bats truly make a ball travel farther than wooden bats that haven't been altered.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

This science fair project idea investigates if fats add to the flavor of food.

Store seeds under three different environmental conditions. Plant seeds in carefully marked groups, watch them grow. Compare results.

The objective of this science fair project is to determine the rate at which participants can respond to different patterns.

2011 VIRTUAL SCIENCE FAIR ENTRY: The objective of this science fair project is to develop a microcontroller and circuit that can conduct electricity.

This science fair project idea addresses tempo, and whether faster or slower music works better as a study aid.

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

Check out this fun science project idea on ecological succession and learn the main difference between primary and secondary succession.

This project explores whether the tempo of the background music we hear in a businesses is important to the environment and how customers move.

Learn about how we localize objects and beings in space through sound and about monaural auditory mechanisms and binaural auditory mechanisms.

Science fair project that determines which foods and drinks contain the highest amount of glucose.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

Determine which kind of rock (igneous, sedimentary, metamorphic) has the greatest reservoir capacity, which is the ability to hold the most oil and natural gas.

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.