There is considerable agreement about the fact that the presence of researchers in the classroom mediates teaching and learning. Why "should" two very different forms of human activity, one designed to study the other, interact and mediate each other? In this article, we propose cultural-historical activity theory as a framework for understanding…

Materials used in conducting a conference workshop on language immersion are presented, including an introductory overview, a guide for observing and analyzing immersion instruction, findings resulting from analysis of the program in question, and the text of a related presentation made at the same conference. The introductory section describes…