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Witte, Stephen P.; Haas, Christina – Written Communication, 2005
This article traces the historical and conceptual development of what is known as activity theory, from Vygotsky and Luria, to A. N. Leontev, to Engestrm, in order to illustrate what I see as two problems with the activity theoretic approach, especially as manifest in the work of Leontev and Engestrm: what I call the boundary and/or focus problem…
Descriptors: Learning Theories, Semiotics, Heuristics