“…Research on multiple representations has been of particular interest in the area of chemistry (Kozma, 2003;Kozma & Russell, 1997;Rohr & Reimann, 1998;Treagust, Chittleborough, & Mamiala, 2002;Wu, Krajcik, & Soloway, 2001). Visual representations play a critical role in chemistry, where complex phenomena are not always directly observable (Kozma, 2000).…”