Back to Chalkboard Teach Lesson 01 – Simple Machines View Activity Lesson 02 – Inclined Planes at Work View Activity Lesson 03 – Wedges At Work View Activity Lesson 04 – Screws at Work View Activity Lesson 05 – Levers at Work View Activity Lesson 06 – Wheels, Axles, and Pulleys at Work View Activity Lesson 07 – Simple Machines Working Together View Activity Lesson 08 – Living with Machines View Activity Lesson 09 – Get Moving! View Activity Lesson 10 – Up and Down in Elevators View Activity Lesson 11 – Elevators and Escalators View Activity Lesson 12 – Things with Wheels View Activity Lesson 13 – Moving in a Wheelchair View Activity Lesson 14 – Sliding and Rolling View Activity Lesson 15 – Things That Spin View Activity Lesson 16 – Helicopters View Activity Lesson 17 – Machines Need Energy View Activity
