- How many people fit inside each square?
- How many people fit inside each square comfortably?
- How many people fit inside each square squished together?
- Can I predict how many will fit in the entire area of interest?
- If the squares are areas of pollution can I predict the strength/intensity of the pollution?

Duration of each activity: 15-20′

Duration: 5-10’

Students express in a large circle how they felt or what they understood.