In this paper, we invite the reader to think deeply about professional development opportunities for faculty. The focus of this professional development is to improve teaching and learning by including more inquiry in the mathematics classroom. Building on theories of teaching and learning, we develop the idea of "teaching procedures" and "teaching concepts" and think about implications for professional development. We then use our personal stories to illustrate that our beliefs and attitudes matter when we want to improve our teaching. Bringing both of these perspectives together, we showcase activities we created for inquiry-based learning (IBL) workshops for faculty. Finally we discuss feedback received from workshop participants.