Professional development (PD) is commonly designed around a particular curriculum, which can leave teachers with a need for deeper and decontextualized conceptual knowledge. Over time, the San Francisco Unified School District CS (CSinSF) team has refined its PD model and transitioned from curriculum- to concept-based training. In this workshop, participants will experience an example of the CSinSF team’s differentiated PD model. First, all teachers will deepen their content knowledge through an unplugged introduction to algorithms. Then, they divide into grade...