Using common materials (spools, string, soap), students learn how a pulley can be used to easily change the direction of a force, making the moving of large objects easier. They see the difference between fixed and movable pulleys, and the mechanical advantage gained with multiple/combined pulleys. They also learn the many ways engineers use pulleys for everyday purposes.
Magician's Catapult
Powerful Pulleys - Lesson - TeachEngineering, PDF, Machines
Pulleys - TeachEngineering
Pulley'ing Your Own Weight - Activity - TeachEngineering
What pulleys are commonly used in a house? - Quora
Pulleys - TeachEngineering
Physics for Kids: Pulleys and Weights and Simple Machines
How Able is the Cable? Understanding Pulley Systems and Resistance
Teach About Simple Machines
What are pulleys? Where are they used in everyday life scenarios? - Quora
Pulley System STEM Challenge and Printable Project
The Power of Mechanical Advantage - Activity - TeachEngineering
Pulleys - TeachEngineering
Pulleys - TeachEngineering
Pulleys