“…Video analysis of one's own teaching or the teaching of others appears to be the most prevalent approach, and can take place in different ways, such as analysis of lessons recorded for Lesson Study purposes [17], participation in video clubs [10,18], and analysis of full-length classroom videos [19] or of video vignettes [2,11,20]. Other activities include analysis of animations [21][22][23], technology-aided interventions [24], reflection on teaching rehearsals [25], examination of real pupils' written responses to mathematical tasks [26,27], or combinations of different mediums mentioned above [28]. Clearly, all these attempts are important in supporting participating pre-and in-service teachers in the development of their noticing skills, as they all report, to some extent, success in doing so.…”