This science fair project idea determines which method of hand cleansing is the most effective.

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.

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

Your child grows a green thumb and flowers with this seed planting activity that also celebrates the 100th day of school!

Make a spring collage with your child to get them outside and those creative juices flowing!

In first grade, children are introduced to fractions. Here's a recipe that combines fraction practice with winter fun and lets kids actually paint the snow!

Construct and experiment with a periscope using reflected light rays to gather an image.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

This science fair project idea demonstrates that plants give off water.

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

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

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

Determine if gender affects the ability to identify different smells.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

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

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

This project can help prepare your child for a trip to the tide pools, or give him a way to remember some of the many creatures he saw during his visit.

This science fair project investigates why the number of visible stars changes from place to place.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

Here's a household scavenger hunt that shows kids the natural sources behind everyday objects...and builds reading skills, too!

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.