The authors describe an evolving theoretical framework that has been called one of the best
kept secrets of academia: cultural-historical activity theory, the result of proposals Lev
Vygotsky first articulated but that his students and followers substantially developed to
constitute much expanded forms in its second and third generations. Besides showing that
activity theory transforms how research should proceed regarding language, language
learning, and literacy in particular, the authors demonstrate how it is a theory for praxis …

The authors describe an evolving theoretical framework that has been called one of the best
kept secrets of academia: cultural-historical activity theory, the result of proposals Lev
Vygotsky first articulated but that his students and followers substantially developed to
constitute much expanded forms in its second and third generations. Besides showing that
activity theory transforms how research should proceed regarding language, language
learning, and literacy in particular, the authors demonstrate how it is a theory for praxis …