posted message: So since nobody have suggested a reading for this week, I suggest Bielaczyc, K., Collins, A., O’Donnell, A., Hmelo-Silver, C., & Erkens, G. (2006). Fostering knowledge-creating communities. Collaborative learning, reasoning, and technology, 37–60. Lawrence Erlbaum. I have put an OCRed PDF on Crocodoc: http://crocodoc.com/5DnKvoX (you can also download it from there).