Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

This science fair project idea explores how length affects the weight a bridge can hold.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

This science experiment tests if dog saliva can really help heal wounds.

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.