Abstract
From the perspective of supporting the activities of students participating in PBL at university, this research describes an ethnography of a community of practice that appreciates trial and error. The processes of change were clarified in the discourses and the contents of the pattern languages developed there. The results show the importance of knowledge sharing and support that leaves students with room for thoughtful action. This study suggests that PBL as interfaces that include benefits of inconvenience could increase value in the development of a community of practice.