“…A GA tool unveils the information of learning interaction or knowledge context of peers (or group members) to implicitly guide learners' behavior, communication, and reflection (Dehler, Bodemer, Buder, & Hesse, 2011;Engelmann, Tergan, & Hesse, 2010;Janssen et al, 2007;Janssen, Erkens, & Kirschner, 2011;Kimmerle & Cress, 2008;Sangin, Molinari, Nüssli, & Dillenbourg, 2011). For example, Janssen et al (2007) investigated the effects of visualization of participation during online collaboration for a historical inquiry task.…”