“…The argument' intention has been studied by several authors (Perelman, 1997(Perelman, , 2007Perelman & Olbrechts-Tyteca, 2006). In mathematics education, several studies have reported about argument intentions shown by elementary schoolers or by pre-service teachers, for example, arguments to validate (Balacheff, 1999(Balacheff, , 2000Harel & Sowder, 1998;Hoyles & Küchermann, 2002); arguments to justify (McClain, 2009); arguments to rebut (Balacheff, 1999(Balacheff, , 2000McClain, 2009;; arguments to defend (McClain, 2009); arguments to (Balacheff, 2000;De Villiers, 1993) and arguments to persuade (Arzarello & Sabena, 2011;Crespo et al, 2010;De Villiers, 1993;Goizueta & Planas, 2013a, 2013bReiss & Renkl, 2002). In pragma dialectics, the role of the intention is critical (C, 1999), but we do not take that perspective in this work.…”