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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!

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

This biodiversity project examines the biodiversity in your own backyard.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

Test your friends to find out if you can replicate the placebo effect's incredible results.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

This science fair project idea explores alcoholic fermentation at work by making your own soda.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

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

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.