National Park Service
Pulley Systems Used at Fort McHenry
What a great opportunity to integrate science into your lesson on the War of 1812! Discover how pulley systems were used to move 1,000 lb. cannons at the Battle of Fort McHenry, and to raise the flag that would inspire Francis Scott Key...
Curated OER
Leprechaun Traps Using Simple Machines
Are you looking for a fun way to incorporate St. Patrick's Day into your science curriculum? Try designing and building leprechaun traps!
Curated OER
Simple Machines and Modern Day Engineering Analogies
Students apply the mechanical advantages and problem-solving capabilities of six types of simple machines (wedge, wheel and axle, lever, inclined plane, screw, pulley) as they discuss modern structures in the spirit of the engineers and...