zone of proximal development

Lev Semyonovich Vygotsky (Russian: Лев Семёнович Выго́тский, IPA:[vɨˈɡotskʲɪj]; Belarusian: Леў Сямёнавіч Выго́цкі; November 17[O.S. November 5]1896 – June 11, 1934)…