Erin Shaw Jihie Kim Pachara Supanakoon MentorMatch: Using student mentors to scaffold participation and learning within an online discussion board. 710-712 2009 AIED http://dx.doi.org/10.3233/978-1-60750-028-5-710 conf/aied/2009 db/conf/aied/aied2009.html#ShawKS09