“…In particular, this study highlights how the particular strategies discussed here (complex phenomenon, iteration, leveraging variability) served as rich representations of practice that allowed teachers to surface tensions around engaging students with uncertainty and make sense of their own active role in supporting students to recognize and learn from uncertainty. That is, in this context, the strategies constituted sensemaking opportunities for teachers (Allen & Penuel, ; Horn & Kane, ). While similar strategies to those we developed are described elsewhere (e.g., Furtak, ; Harris et al., ; Kang et al., ) and have been the focus of PD in other domains (e.g., mathematics), they have not yet been described as an explicit focus for science PD, nor have teachers’ negotiation of their roles within these strategies been fully described.…”