Science fair project that tests how well various sunscreens protect skin from the sunâs ultraviolet radiation by measuring their effect on sun-sensitive paper.

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

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

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

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

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

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

Demonstrate that insects observe colors and choose favorites. Place colored pieces of construction paper on a flat, glassy surface, observe bug preference.

This science fair project idea compares the cuteness reaction between genders.

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

Cinnamon is tasty, but does it have super powers as well? Find out if cinnamon can repel mosquitoes in this outdoorsy experiment.

Examine the impact of insecticides on plant growth.

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

This science project has students study the idea of human beauty.

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

This experiment will explore if and where fractals can be found in the natural world.

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

This study observes plants, insects and an animal living in proximity to a known source of EMF.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

This science project teaches students to classify different shapes of leaves.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

This science fair project idea explores edible things you didn't know you could eat.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

In this science fair project, young children notice and track changes in trees throughout the year.

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

A project to reinforce learning about the layers of the rainforest, rain forest ecosystem, and the greenhouse effect.

Determine whether carpet placed on a lawn will kill grass and weeds. Choose an area of lawn that you would like to remove, record grass that is dead or dying.

This science fair project idea investigates whether rocks containing geodes can be determined from the outside.