Professors who wish to engage students during large lectures face an uphill battle. Not only is it a logistical impossibility for 200+ students to actively participate in a 90 minute lecture, but the downward sloping cone-shape of a lecture hall induces a one-to-many conversation. In the following documentary short, Dr. Rankin, professor of History at UT Dallas, wanted to know how to reach more students and involve more people in class discussions both in and out of the classroom. She had heard of Twitter...