This study examines how a Humanities team engaged in professional conversation to refine and implement a literacy and inquiry tool in an Asian Studies curriculum. Drawing on socio-cultural perspectives of teacher learning and theories of tools as mediators of action, this case study investigates the ways this community of practice discussed their understandings of contexts, curriculum, and classroom practice to implement the literacy and inquiry tool. Such practices hold promise for the design of professional learning experiences where teachers engage in conversations about key tools they can use in their practice and assume more control of their own professional learning. (Contains 3 figures.)