It seems to me that conceptions from recent work in the study of the organization of immediate social interaction can make more rich the notions of activity and of engagement in the ZPD that are being used by
those I have been calling neo-Vygotskians and who might even more appropriately and inclusively be called neo-interaction is tresearchers on learning. In the remainder of this chapter, I will review certain issues in the conception of human interaction in face-to-face conversation. Then I will illustrate those issues with an example of conversation from a kindergarten-first-grade classroom.