The Common Core Standards for Mathematical Practice are processes and proficiencies that mathematics educators would like to develop in their students. In this session, we present a case study of three teachers, which looks at the prevalence of Mathematical Practice 6, Attending to Precision, in a professional development statistics course for in-service teachers largely focused on open-ended activities. We also illustrate how the elicited Attending to Precision may differ in the context of statistics compared to mathematics.

Session Type: Brief Research Report