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How do organic materials become soil? This science experiment measures what materials biodegrade.

Determine if each hemisphere specializes in dealing with specific functions. Include illustrations of the brain, it hemispheres.

This science project teaches students about organic farming and the benefits and disadvantages of commercial plant food.

Research what is known about Alzheimer's disease and its treatment, and then prepare a script for television to educate the public.

In this hands-on activity, kids learn what it takes to foster seedlings into full-grown plants, all in a regular old soda bottle!

I scream, you scream, we all scream for homemade spearmint ice cream!

Is your little scientist up for a rocky challenge? Let them make their own geode rocks using eggs and epsom salts!

Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

This activity works well with a group or just with a parent and child, and it can make a great party game since it's both fun and inexpensive.

Give your budding young observers a chance to discover simple machines at use in their own home.

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

Use a fish tank to simulate a pond! This science fair project explores the relationship between acid rain and the dissolved oxygen concentration of water.

Measure the speed of the earth's rotation using protractors and meter sticks. This science fair project measures the angle of the sun in relation to earth.

In almost every preschool classroom is a sensory table. Learn how to make one at home!

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

This science fair project idea quantifies exactly how accurate the cricket thermometer is.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

More height, more steep, more speed! This science project investigates whether there is a correlation between the height of the roller coaster and the slope.

Chemistry isn't just incredible ... sometimes its edible! These crystal lollipops are a delicious introduction to chemistry concepts.

The purpose of this project is to determine if there are fluctuations in the rising and the setting of the sun and the position of the earth as it rotates.

The objective of this science project is to determine whether a sweet tooth is most likely an inherited trait or a learned behavior.

In this activity, your kid will watch coal turn into crystals right before her very eyes, and learn some science along the way!

This science fair project idea models industrial oil spills and determines if they have an impact on wildlife living beneath the surface of the water.

Ethanol can be used as an alternative fuel! The purpose of this experiment is to identify a starch plant that produces the largest quantity of ethanol.

The purpose of this science project is to determine which stimulus, gravity or water, will cause the greatest growth response in a plant.

Investigate how to keep your fruit fresh for longer. The purpose of this science experiment it to determine which kind of bag best preserves fruit.

This science fair project idea determines exactly how much of an effect road grade has upon a cyclistâs speed.

Enlisting the cooperation of your teenager to help prepare your household for an emergency is the perfect way to get set, fast.

This science fair project idea quantifies the effect of weather- in this case temperature and humidity- on musical instruments.