Students continue to explore the story of building a pyramid, learning about the simple machine called a pulley. They learn how a pulley can be used to change the direction of applied forces and move/lift extremely heavy objects, and the powerful mechanical advantages of using a multiple-pulley system. Students perform a simple demonstration to see the mechanical advantage of using a pulley, and they identify modern day engineering applications of pulleys. In a hands-on activity, they see how a pulley can change the direction of a force, 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.

Concepts

engineering, mechanical advantage, stem, pulleys

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Additional Tags

movable pulley, integrated teaching and learning program and laboratory, teachengineering, pyramid, simple machine, mechanical advantage of machines

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Classroom Considerations

• Knovation Readability Score: 4 (1 low difficulty, 5 high difficulty)