“…The controversy case was explored by alternating several seminar activities, some of which belonged to the education frameworks specific to problem-based and situated learning: a real problem whose complexity is progressively revealed by a sequence of testimonies, collaborative team work sessions, tutoring, peer-to-peer feedback, intermediary personal output that allows regular supervisors' feed-back, and so on (Anderson, Reder and Simon 1996, Béchard 2001, Jonassen 1997, Lemaître 2007, Pedretti 1999, Savin-Baden 2000, Tan 2007). These activities were spread over two one-week periods iii and took place in a precise chronology that is outlined in Figure 1.…”