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

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

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

Use pepper and soap to discover some fun facts about the properties of water.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

This science fair project idea explores whether white light can be separated into different colors.

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

In this science fair project, kids will be able to see where germs reside on their hands while gaining insight into the benefits of thorough hand washing.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Determine if gender affects the ability to identify different smells.

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.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

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

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

This science fair project idea determines what household items are good conductors of electricity.

This classic children's game demonstrates how sound travels through air vs. through a solid.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

This project determines what category of person is most likely to be ticklish.

Make a backbone model to explore human anatomy and life science.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.