As part of their professional competencies, science teachers need an elaborate meta-modelling knowledge as well as modelling skills in order to guide and monitor modelling practices of their students. However, qualitative studies about (pre-service) science teachers' modelling practices are rare. This study provides a category system which is…

In recent decades, important advances have been made in understanding how discursive symmetry can be achieved in whole-class dialogue. However, very little is known about how this dialogue may progress in the sense of critically linking ideas in coherent lines of collective inquiry. This article investigates this issue by analyzing 4 consecutive…

For decades teacher educators have used video to support developing preservice teachers, but new technologies open the possibility of a much more dynamic and real-time use for video of teaching. This article describes an initial attempt to leverage these technologies to develop a teacher learning community focused on evidence-based arguments about…