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This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

Turn an abstract lesson into a practical craft with the fun and colorful creation of dough earth layers!

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

On the next chilly, winter day, invite your fifth grader to make a hand warmer by experimenting with the loaded combination of a few natural ingredients.

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

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

Discover whether cold or hot water from the faucet will boil faster on the stove.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

Test whether plants can grow without sunlight and water.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

This science fair project idea examines which type of insulation holds in the most heat.

The goal of this project is to create an exciting topographical map out of dough.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

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

Could there be toxic chemicals lurking in the cupboards and closets of your home?

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.

In this science fair project, students create their own miniature salt flats at home.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

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

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

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

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

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

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

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

What happens when eyes see something that the brain knows cannot be true? In this science activity, the brain has to "fudge" it when interpreting what you see.