“…For instance, the results of this study underline the need for the promotion of aspects of a more formal nature of the practice of conjecturing (vertical mathematising activities) and of aspects of the practice of proving such as the use of examples that guide the proving process but do not constitute a proof. From our learning approach, it is stated that learning in the processes of professional development aims, through the peripheral participation, to alter the way in-service teachers develop mathematical practices to the way the mathematicians' community of practice develops such practices (Blömeke, Kaiser, König, & Jentsch, 2020;Lave & Wenger, 1991;Podkhodova, Snegurova, Stefanova, Triapitsyna, & Pisareva, 2020;Yilmaz, 2020), always taking into consideration that there are differences between both contexts (Weber, Inglis, & Mejia-Ramos, 2014).…”