“…Argumentation refers to making convincing claims backed up by sound evidence and broad understanding of various aspects of an issue (e.g. Coirier, Andriessen, & Lucille, 1999;Jeong, 2004;Kuhn, 1991;Nussbaum, 2005;Spatariu, Hartley, Schraw, Bendixen, & Quin, 2007). Argumentative learning activities can serve as an effective mechanism of diffusion of knowledge through a network of exchanges in small groups (Roth, & Bowen, 1995).…”