Teachers' knowledge has been an important research focus for many decades. Although many empirical studies have been carried out regarding content knowledge and pedagogical content knowledge, less attention has been paid to general pedagogical knowledge (GPK). The focus of this study is the exploration of different definitions and dimensions of…

In this paper, we describe a model for systematically improving the mathematics preparation of elementary teachers, one lesson at a time. We begin by identifying a serious obstacle for teacher educators: the absence of mechanisms for developing a shareable knowledge base for teacher preparation. We propose our model as a way to address this…