| Summary: | The article introduces Lev Vygotsky by providing a literature review where
three of his seminal ideas are discussed: a) the human activity as mediated by
the use of tools which are as genes to the biological evolution; b) there is a link
between the socially organised activity and the construction of the
consciousness; c) the higher psychological processes appear twice, first interpsychologically,
then intra-psychologically, as they are internalised by the
subject. Three pedagogical implications of the concept of ZPD are discussed:
a) the existence of a learning opportunity window; b) the role of the tutor as
metacognitive agent; c) the importance of peers as mediators of the
apprenticeship.
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