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This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

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.

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

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

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

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

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

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

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

For your budding first grade scientist, all you need is some simple, natural materials to create an amazing ant farm. Here's how to get started.

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

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

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.