... It is important to note that whereas Reiser ' s structuring is designed to simplify a task, problematizing is designed to make sure that learners engage in the necessary complexity within that simplifi ed task. A number of studies conducted in social studies classrooms have illustrated the utility and range of scaffolding that can be used to support students in classroom discussions and deliberations ( Beck, 2003 Beck, , 2005 Flynn, 2009 ; Hess, 2009 ) as they engage in inquiry projects or historical investigations ( Bain, 2005 ; Brush & Saye, 2001 Milson, 2002 ; Rouet, Britt, Mason, & Perfetti, 1996 ; Saye & Brush, 1999 ), develop an understanding of cultural universals ( Brophy & Alleman, 2000 Brophy et al., 2009 ); use GIS to develop cartographic understanding as well as cultural awareness and empathy ( Keiper, 1999 ; Milson & Earle, 2007 ), employ technological tools ( Okolo, Englert, Bouck, & Heutsche, 2007 ; ), or engage in economic reasoning and problem solving ( Miller & VanFossen, 1994 ). This body of work, across disciplines, clearly indicates that improving students ' learning requires the teacher to design instruction that models and offers explicit assistance in breaking down diffi cult and complex cognitive tasks (see Barton, 2008, p. 243 ). ...