The research described investigated the process of the training of teachers within a teaching activity, while collectively elaborating on trigger-learning situations. The proposal was for continual formation of teachers, based in historic-cultural theory and the theory of Activity, supported by the concepts of work and activity. In the comparative analysis of the teaching proposals and the socialization process, we sought evidence that would reveal the changes in the movement of the organization of the teachers' actions. The results show that in a collective (re)organization of their actions the teachers attributed new understandings to their own actions, to the mediation and to the choice of tools, appropriating for themselves the collaborative forms of the teaching activity. In this formation process, the new practices of the teachers were mediated into the pedagogical praxis that strengthens the meaning of collective as a knowledge production space.
Teacher education; Mathematics teacher; Theory of Activity; Teaching activity; Cultural-historical theory