Fazer da matemática problema a ser inventado inventando formação

This paper presents an event that occurred in classrooms for education of teachers who will teach mathematics in the Elementary School. In the tension of an experienced and with attention on an experience, it leads to think about the education of teachers as restlessness and processuality in the experience. Approaching the philosophies of difference, especially in Foucault and Deleuze, it makes action from the theory and action from the practice, alternating theory and practice, leading to think on education when making mathematics a problem to be invented. The mathematics production provides for the invention in the education of teachers.