“…We draw on the prevalent conceptions of noticing: Learning to Notice (van Es, 2011;van Es & Sherin, 2002) and Professional Noticing of Children's Mathematical Thinking (Jacobs et al, 2010), and formative assessment (Wiliam, 2018). Through those lenses, we used an adapted version of Marin et al' (2020) reimagined cycle of formative assessment drawing on teacher noticing skills that utilizes photographs, and displays how learning trajectories can be incorporated at each stage to enhance noticing and promote formative assessment (Figure 1). The cycle includes the teacher noticing skills of attending, interpreting, and responding to student's thinking (Jacobs et al, 2010;van Es, 2011), while extending this work to mirror formative assessment practices of anticipating student thinking prior to the start of a lesson and recommending next instructional steps.…”