“…There is a consensus among researchers that learning is most effective when learners work in groups, exchange ideas with their partners and collaborate to achieve solutions to problems (Johnson et al, 2002;Slavin, 1996). Consequently, researchers have attempted to define conceptual approaches that support collaboration (Kreijns et al, 2003;Slavin, 1996), deploy instructional methods to enforce collaborative group work (Lehtinen et al, 1999) and explore the best use of social technologies to improve collaboration (Harris and Rea, 2009).…”