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

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

Investigate which substances are most effective at removing salt from water.

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

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.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

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 purpose of this science fair project is to learn which substance best preserves apples. Learn about enzyme interactions in fruit and scientific processes.

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.

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

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.

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!

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.

This science fair project idea tests the efficacy of both synthetic and natural antibiotics.

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

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.

This science fair project idea measures physical dexterity as a function of temperature.

Do your laundry and your science project simultaneously! This science fair project investigates whether the color of a garment affects the time needed to dry.

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 determines if material and tensile strength of different types of skateboard wheels affects the velocity of the skateboarder.

Have your kid build an ice sculpture in this activity that's so fast, fun, and messy it's the perfect way to demonstrate how much fun experiments can be!

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.

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

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.

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

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

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

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.