Simple Machines Lesson 21 Compound Pulleys (Block and Tackle) Teacher Background: Teachers should know how to set up two compound pulley systems (using at least two pulleys each).
(Teachers; should know; how to set up two compound pulley systems) Context(Teachers should know,List([82, 102))):(Teachers; should know to set up; two compound pulley systems (using at least two pulleys each)
Teachers should know,List([82, 102))
Teachers Teachers
should know should know to set up
how to set up two compound pulley systems
two compound pulley systems (using at least two pulleys each