TeachEngineering
Teach Engineering: Let's Move It!
Students explore methods employing simple machines likely used in ancient pyramid building, as well as common modern-day material transportation. They learn about the wheel and axle as a means to transport materials from rock quarry to...
PBS
Pbs Teachers: Secrets of Lost Empires I Colosseum
Discover how to use pulleys to change the direction of force, compare different pulley designs and discuss the advantages and disadvantages of a pulley.