Nadav Ehrenfeld's Lab

Educational researchers widely acknowledge the promises and impediments of teachers collaborative sensemaking, illuminating the need to recognize additional resources that are salient for teachers within professional interactions. In line with this overarching goal, this study explores the role of mathematics teachers' previous professional experiences in their collaborative sensemaking. Theoretically, it is rooted in ecological theories of learning, highlighting that learning is always shaped by an interconnected set of environments. Empirically, it builds on data from a researchpractice partnership with a professional development (PD) organization, where we used classroom video to support secondary mathematics teachers' teams in improving their practice. The analysis first portrays two video-based conversations to illustrate the potential of inviting and building on teachers previous experiences and resources to support their collaborative reasoning. Then, it looks across nine video-based conversations of the same two teams and systematically describes experiences and resources that teachers spontaneously reference through six categories: PD workshops, conferences, PD organizations, online resources, research and policy, and curricula. These categories provide a framework for designers and facilitators who want to take seriously the practice of acknowledging that teacher learning happens through a complex web of learning experiences. The study brings forth the affordances of taking a learning ecology perspective on teacher collaborative sensemaking as professional development (CSPD) and provides guidance for designing, facilitating, and analyzing CSPD conversations in ways that center on teachers prior knowledge and experiences.

From a teachers perspective, teacher learning happens through a complex web of learning experiences. However, research on teacher professional development (PD) typically focuses on the direct influence of single activities or programs. PD researchers less often acknowledge the interactive impacts on teacher learning of the multiple experiences teachers have in different contexts. This conceptual paper works toward a more thoroughgoing ecological framing of teacher PD by bringing forth three dimensions of teacher learning that are often overlooked: scope, interconnectedness, and temporality. The essay centers on the type of design that is widely considered high-quality PDnamely, experiences that are collaborative and situated in teachers instructional contextand considers those experiences from the perspective of these three dimensions. I illustrate this framework and its affordances with data from a 4-year research project rooted in video-based mathematics teacher conversations. The focus on scope allows researchers to name and distinguish contexts that are salient to their different studies. The focus on interconnectedness uncovers the interactive relationship between the immediate and broader PD contexts. Finally, the focus on temporality affords the understanding of different phases in learning and extends linear conceptions of progress. Together, these dimensions provide a rich conceptualization to better inform the work of teacher educators.