In the university system today, co-research may be a decolonising strategy. We evaluate teaching a 'Modernization and Social Change' course in Vietnam as an experiment in co-research anthropology training. If for visitors, the idea of 'Vietnam' is nurtured by Hollywood action cinema, 1960s-1970s protest movements and documentary television, a process of collective research can rearrange orientations for students and teachers. The essay describes the making of a 'model' film as a teaching tool for international faculty, and as an evaluation of general teaching practice. A co-research approach to the classroom, assuming the students as researchers, engaging their own collaborative interests together, invites further discussion on teaching mapping as model for ethics-oriented co-research anthropology training; on teaching Capital in Vietnam using maps and counter-mapping as collaborative practice; and on using participatory methods for foreign faculty in a politically charged field.