The buoyant force of water explains why some objects float in water. But why do some objects sink? Find out in this physics experiment and learn about density.

In science fair projects, middle school students discover why nitrogen fixing bacteria are important to plant growth.

In this challenge, students are tasked with creating an insulated cup that will keep beverages colder for longer than a regular cup.

This project will explore whether test subjects, deprived of points of reference, will, in attempting to walk a straight course, walk in circles.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

In this challenge, students are tasked with creating a car that can be powered by a balloon!

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

In this design challenge, students will be tasked with creating a bouncy ball polymer!

Check out this cool science fair project on identifying rocks and minerals for kids.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!