- learn about cam mechanisms;
- design a simple cam mechanism.
- A sample cam mechanism
- Pre-cut box materials
- Engraving materials: 3mm basswood sheets
- Wood glue
Session 1 Lead-in
Showcase students how a sample cam mechanism works and invite them to try it out. Ask students a question: “Do you know why the rod above the box keeps moving up and down? “
Possible answer: “It’s because when we turn the rod on the right-hand side, it will lead to the rod on top of the box moving up and down.”
Ask students another question: “Then why is the rod on the box moving up and down and rotating at the same time while the rod on the right-hand side keeps circling?”
Give students time to think about this question.
Explain to students: “In this project, a transmission system is applied. So we need to know what a transmission system is. A transmission system transmits power from one part of a machine to another. All the components that make a machine or parts of a machine move or rotate constitute a transmission system.”
For the complete lesson plan and instruction manual, please download the Lesson Plan.