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Versatile classroom pulley set designed to teach the mechanical principles of pulleys to a whole class. 
The focus of the set is to provide hands-on activities that are easy to understand as well as offer both intellectual and practical experience for students. 
Set contains: 18 single sheave pulleys; 12 double sheave pulleys; 12 triple sheave pulleys; 6 spring scales (500 g, 50 N); roll of twine; and 20 pulley chain links. 
Includes a 32-page teacher’s guide titled Pulleys in Motion that gradually introduces students to fundamental pulley concepts. 
Contains reproducible student activity sheets and assessment ideas.