In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

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.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.