Levers and Pulleys: How Machines Multiply Force (Teach This Topic)
This guide supports teaching the finished lesson on how levers and pulleys change the size, direction or distance of an applied force. Open Full Article...
mechanical advantage
Levers and Pulleys: How Machines Multiply Force (Parent Q&A)
This guide explains how levers and pulleys change the size, direction or distance of an applied force. Open Full Article...
Levers and Pulleys: How Machines Multiply Force
How can one person move a load that would be impossible to lift directly? Open Full Article...
How Gears Change Speed, Turning Force and Direction in Machines (Parent Q&A)
This guide explains the main ideas in the lesson about how gears transfer motion in machines. Open Full Article...
How Gears Change Speed, Turning Force and Direction in Machines (Teach This Topic)
This guide supports teaching the completed lesson about how gears transfer rotational motion and change speed, torque, direction and movement type. Open Full Article...
How Gears Change Speed, Turning Force and Direction in Machines
How can one rotating part make another part move, even when the two are not fixed together? Open Full Article...
Work Smarter, Not Harder: The Science of Simple Machines Explained (Parent Q&A)
This guide explains the lesson’s key ideas, vocabulary, practical work and historical cautions. Open Full Article...
Work Smarter, Not Harder: The Science of Simple Machines Explained (Teach This Topic)
This plan helps you teach the finished lesson without repeating its full explanations. Open Full Article...
Work Smarter, Not Harder: The Science of Simple Machines Explained
How could people move enormous stones before engines existed? Open Full Article...