“…The shared repertoire involves the routines, words, gestures, symbols, and concepts that the community has generated that turn out to be part of the COP (Johnston, 2016;Moule, 2006;Peercy et al, 2013). Members need to recognize each other, work together, and exchange information (Janardhanan et al, 2020) participants legitimately pay close attention to each other or work on a shared problem, new meanings and perspectives can be unlocked (Perron & Duffy, 2011). Conceiving mathematics as a COP with its own language (Sfard, 2007), learning is described by extending and modifying its shared repertoire, such as routines and discourse, oral or written, indicating legitimate peripheral participation (Lavie et al, 2019;Lu et al, 2022;Mpofu & Mudaly, 2020;Viirman, 2015).…”