- Build working "elbow joints."
- Record video.
- Upload to YouTube.
- Embed on blog.
- Reflect on the experience (write a paragraph or more) and answer the following questions on their blog:
- How were your pretend muscles similar to real muscles? Different?
- What changes occur to the real muscles in the human body to make them pull on bones?
- What would happen if the ligaments of the models were overstretched or torn? How would it affect the way the models could operate?