Course Content Unit: Pulleys and Gears 11 Activities Expand Lesson Content Lesson 01 – What Is a Pulley? Lesson 04 – What Is a Gear? Lesson 07 – Opposite Directions Lesson 08 – Changing Direction: Bevel Gears Lesson 09 – Changing Direction: Worm Gears Lesson 10 – Changing Direction: Rack and Pinion Lesson 11 – Bicycle Gears Lesson 06 – Two Ways to Save Energy Lesson 05 – Pulleys and Gears in Daily Life Lesson 02 – Experiment: Make a Simple Pulley Lesson 03 – Experiment: Make a Moveable Pulley
