Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

This science fair project examines how seeds hitchhike on animals and clothing.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

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

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

Science fair project that examines condensation and the conditions needed in order for dew to form.

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

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

In this cool catalase and hydrogen peroxide experiment, kids put a potato in a jar of hydrogen peroxide to see how catalase acts as an enzyme.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

This science fair project idea explores the different properties of matter.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

Check out this cool science fair project on identifying rocks and minerals for kids.

Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

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.

Science fair project which determines whether a person's taste in music is dictated by the key that the song is written in.