“…Blending a teacher with online course materials has resulted in instructors' investigations into how and what kinds of mediation optimize the learning potential (Graham, 2013;Garrison and Vaughn, 2008;Graham and Dziuban, 2008). Blended learning has been investigated in research at the secondary (Larson & Murray, 2008) and tertiary levels, in business (Beckem & Watkins, 2012) science (McDonald, Straker, Schlumpf & Plack, 2014) and humanities courses, with specific populations (Shea, 2007) and longitudinally across tertiary institutions (Shea, Fredericksen & Pickett, 2001). Many of the studies focus on student satisfaction (Dziuban, Moskal, Brophy-Ellison & Shea, 2007;Bauk, 2015;Carter, 2013), while others investigate particular types of presence and their effects on learning outcomes (Wang & Chen, 2008;Ice, Curtis, Phillips & Wells, 2007;Garrison, 2007).…”