It?s early on a Thursday afternoon, and I?m preparing to teach two interdisciplinary humanities courses. I?ll spend the next three hours working closely with about 50 undergraduates, and I need to get my ducks in a row. When I started my teaching career, more than two decades ago, this last-minute prep might have entailed reviewing handwritten lecture notes or scrawling something profound on the chalkboard. Today, however, I?m hunkered down at a state-of-the-art podium that will allow me to engage my students in ways I couldn?t have imagined in the early 1990s.