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

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

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

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

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

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.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

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.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

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

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

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.

This clay "painting" activity encourages and supports creative development and critical thinking skills.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Create a self-portrait from natural materials in this collage craft activity!

Create a sun-shaped summer words chart in this DIY craft activity!

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

Transform a brown paper grocery bag into a hat in this arts and crafts activity!

Work on homophones, words that sound the same, and spelling with this imaginative activity!

In this activity your child will create their very own marble maze!

Children research and make a timeline of an inspiring woman in this biography activity.

Teach children how to upcycle dried-out markers with this homemade paint-making activity!

Help your third grader learn time zones with this fun map activity!

This spider mobile activity encourages learning about the science of motion, air currents and art.