Diana Senechal teaches philosophy at Columbia Secondary School for Math, Science, and Engineering in New York City; in addition, she serves on the faculty of the Sue Rose Summer Institute for Teachers at the Dallas Institute of Humanities and Culture. In this article she states that if someone had told her five years ago that she would be a high…

Despite the long history of the study of pedagogical content knowledge (PCK), two facts remain obvious. First, there are almost as many conceptions regarding the definition of PCK as there are researchers interested in it. Second, it is largely unclear which methods enable teacher educators to best prepare teacher candidates to use PCK. Recently,…