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Towards more precise design guidance: specifying and testing the functions of assigned student roles in online discussionsWise, Alyssa Friend ; Saghafian, Marzieh ; Padmanabhan, PoornimaEducational technology research and development, 2012-02, Vol.60 (1), p.55-82 [Periódico revisado por pares]Boston: Springer Science + Business MediaTexto completo disponível |