“…For example, one-off field trip designs (e.g., Milrad, 2008;Sharples, et al, 2009) tend to encompass MSL4, MSL5, MSL6 and MSL8 but not necessarily the rest. Longer term 1:1, 24x7 access programs or learning activities (e.g., Looi, et al, 2010;Metcalf, et al, 2008;Vogel, et al, 2007;Wong, Chin, et al, 2010) are more likely to incorporate MSL1-MSL6 and MSL9. Among the studies that incorporate the same feature, there might be different extents or "weights" of emphases between the two extremes of the spectrum.…”