“…This research suggests that physical and virtual representations have complementary cognitive affordances for student conceptual learning (de Jong et al, 2013;Klahr, Triona, & Williams, 2007;Olympiou & Zacharia, 2012). Physical representations have been shown to be particularly effective in helping students learn concepts that build on movement or real-world experiences such as taking measures (Zacharia, Loizou, & Papaevripidou, 2012), feeling weights , or understanding how scientists collect data in concrete contexts (Winn et al, 2006). Virtual representations have been shown to be effective in helping students learn concepts that describe invisible processes such as electron flow (Finkelstein et al, 2005) or chemical bonding (Zhang & Linn, 2011), summarizing data (Winn et al, 2006), or when removing concrete details can make concepts more salient (de Jong et al, 2013).…”