Always strive to make things better. The second of three activities in the Experimenting with Solar Heaters unit has learners design new solar heaters that are more effective compared to the simple models they used in the previous lesson plan. Each group identifies one variable that they want to change and then build their new solar heaters.

Concepts

solar energy, variables, engineering design, heat transfer, energy transfer

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Instructional Ideas

• Have a contest to see which group can design the most efficient solar heater
  

Classroom Considerations

• Familiarity with the engineering design process is a plus
• Scholars should have already completed Part 1 of the series
  

Pros

• Includes a detailed lesson guide
  
• Provides a student worksheet
  

Cons

• None