Introduction

This chapter presents an approach to understanding how people learn and use their bodies to participate in the cultural practices of technoscience. Our analyses are organized around two detailed cases of embodied disciplinary knowledge drawn from two naturally occurring settings. The first case is a tutoring interaction involving an adult tutor and an adolescent student working together on school mathematics tasks involving the Cartesian coordinate system. The second case involves two civil engineers redesigning a roadway plan for a housing project using a more complex “coordinate system.” These case studies describe the development of what we call “disciplined perception.” This volume attests to the growing focus on talk in research on mathematics learning. As conversation and discourse analysts have argued over the last twenty years, “talk-in-interaction” (Schegloff, 1992) is a primary site for activity that makes, reproduces, and transforms our social and cognitive worlds.