We are incredibly grateful to Rosalyn Bloch, who (as an undergraduate researcher at the time) edited the majority of the transcribed interviews. In addition, we thank Juli Uhl and Kira Treibergs for their thoughtful contributions regarding this manuscript. Lastly, we are indebted to all of the instructors who trusted us with their thoughts. The conversations and ideas that emerged during these discussions were more honest and richer than we could have hoped, and it is because of them that future work regarding teaching and learning about ATP will progress.