Comparison should include
- a hands-on activity to build devices powered by different energy sources (e.g., biological, chemical, mechanical, solar, and hydraulic)
- evaluating the efficiency of the different devices
- following all safety procedures
- identifying math and science concepts used in the project.
Process/Skill Questions:
- What is energy?
- How does one choose the best energy source for a device?
- What are some forms of sustainable energy?