Read this to the class:
A city councillor says, "Sunshine is free. Let's cover every roof in town with solar panels and shut down the power plant." An engineer at the meeting smiles and says, "Solar is great. But it won't do everything, especially in December." The councillor wants to know why. Your team's job: find out what makes sunlight stronger or weaker, and advise the council.
Teams of three, with jobs that rotate after each test: Lead (holds the flashlight), Measurer (sets the angle and counts squares), Recorder (writes results).
In the full lesson PDF
- Bet (5–10 min)
- Hunt (20–25 min)
- Reveal (10–15 min)
- Act (10 min)
- Background for the teacher
- Assessment
- Student sheet
US Letter, prints cleanly in black and white. The student sheet is on its own page, ready to photocopy.