Add to ORKGInternational audienceThis follow-up paper comes from a workshop focusing on different practical ways of teaching geometry at the primary school level. In part 1, we use some pieces from a corpus of data videos, elicitation interviews (Boutrais-Ferrero, 2015, Vermersch, 1994) to investigate how the teacher exercises her didactic vigilance (Charles-Pézard, 2010) when preparing her teaching sequence. Then (part 2), we identify needs that must be addressed in training as well as when designing a resource. In part 3, we present a Role-Play activity used in geometry teacher training involving the physical manipulation of materials (e.g, the folding of paper). Although this activity may appeal to teachers, it may not necessarily allow them to gra...