“…The literature refers to studies that raise the most common difficulties in understanding infinity among students and in-service or prospective teachers. To name a few examples: its abstract nature (Manfreda Kolar and Čadež, 2012), its double dichotomy both actual and potential (Dubinsky et al, 2005a(Dubinsky et al, , 2005bMonaghan, 2001), the lack of a pictorial or mental image of what is being represented (Ángeles-Navarro and Pérez-Carreras, 2010), large finite numbers deemed as infinites (Manfreda Kolar and Čadež, 2012;Medina Ibarra et al, 2019;Singer and Voica, 2003), or contradictory intuitions when working with infinity (Fuentes and Oktac, 2014;Tirosh, 2002;Wijeratne and Zazkis, 2015).…”