Multimedia helps learners learn, but different media presentation modes affect learners’ cognitive load differently (Moreno, 2002; Mayer & Moreno, 2003; Plass, Chun, Mayer & Leutner, 2003). Sweller (2007) mentioned that the purpose of instructional design is to assist learners to store information in long term memory . This implies that the way teaching materials presented to learners is a key element in instructional design. Attention to cognitive load is a critical concern.
