“…Baker, 2003;Hamilton, 1997), argumentation (Andriessen, 2006;Leitão, 2000;Marttunen, Laurinen, Litosseliti, & Lund, 2005), explaining (Sandoval, 2003), mutual explaining (e.g. Webb, 1989;Webb & Palincsar, 1996), observation of problem solving (Barron, 2003), questioning (Chin, 2002), providing and receiving constructive criticism (Sawyer, 2007), synthesizing multiple perspectives (Bielaczyc & Collins, 2006) or reasoning (e.g.…”