In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Find out whether packaged seeds actually do expire in this new science fair project idea.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Test whether plants can grow without sunlight and water.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

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

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

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

Find out whether putting something on top of a plant will inhibit its growth.

This science fair project idea determines if the color of light affects the growth of plants.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

This science fair project idea investigates whether plants can survive being frozen.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

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

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.