International audienceDiscussion Group 2 (DG 2), in a sequence of two one-hour sessions, revisits the discussion about the role of history of mathematics in teachers' education – both for pre-service teachers and currently practicing teachers. Activities of DG 2 include a discussion of examples from the literature that propose benefits for teachers and their students when history of mathematics is utilized to teach and learn mathematics. Participants will also share experiences from their own contexts. In particular, DG 2 will draw upon concrete examples from university courses, professional development programs, and projects, and when possible, the observed and/or documented benefits derived from the use of history of mathematics resulting from these examples. Finally, participants will discuss specific tasks or activities that may serve as examples for contexts that do not currently possess a strong history of mathematics dimension within mathematics teacher education programs, or which may provide new examples for those who do.