We agreed to use Problem Based Learning Method for this challenging project.
The ones who don't know this teaching approach and its benefits, can have a look to this article on Edutopia, where the methodology is introduced and the importance (and the difficulty!) of a good choice of the project's driving question is clearly pointed out.

These are the driving questions for the teams:
- How can we model the spread of the virus within a group?
- What does “flatten the curve” mean? And how math is helping?
- Can we learn from the past? Can models of old pandemics be useful to avoid making errors and saving lives?
- When must be taken measures to contain the spread of a virus? The importance of contact tracing and how to identify reliable indicators.
Teachers explained meaning and the impact of each question to their students who debated and came out with 4 teams for each country who will deep all of them, scaffolded by teachers and by the external tutors.