Interaction approach and second language acquisition

This article overviews the issue of interaction and its role in second language acquisition (SLA). The role of interaction in L2 learning and in second language classrooms has long been a controversial issue. The article first introduces some definitions of input and interaction hypothesis and then reviews the studies and researches concerning the interaction theory, its role in second language acquisition and its application in second language classrooms. Finally, a number of recommendations are presented to create the right kind of classroom interaction for the second language acquisition.