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Résumé : 1] At colleges and universities across North America, online education is a topic that has generated a significant amount of discussion in the past year or so.In many ways, the idea of online education is only the most recent version of something that got its start in the nineteenth century: the correspondence course.(1) The development of radio and television in the twentieth century, and then the rise of the internet over the last twenty years, has made it possible to conduct courses with far less time lag than was present in the early days of distance learning, when lessons and assignments were carried by surface mail.Each issue of the Chronicle of Higher Education seems to bring word of some new development or wrinkle in the rapid development of online courses, and perhaps no topic is more controversial than MOOCs (Massive Open Online Courses).(2) While many embrace the idea that MOOCs make college-level learning available to thousands who would otherwise not have pragmatic access to it, others worry that MOOCs threaten to put traditional college courses out of business.(3) [2] In February 2013, the University of Rochester officially joined Coursera, one of the largest providers of MOOCs in the world.(4) The university had considered several options regarding online education, some of these claiming to offer the prospect of revenue generation and increased ease and flexibility for students, as well as the possibility of functioning as an alternative to conventional classes and counting for credit.In choosing to partner with Coursera, the university chose to place availability of knowledge above the concern for revenue: Rochester MOOCs are free, open to anyone who wants to enroll, and do not count for college credit.(5) [3] I was chosen to teach one of our first MOOCs and based my Coursera courses on the History of Rock class I currently teach at the University of Rochester.Coursera recommends that regular semester courses of twelve or more weeks be broken up into six-to eight-week courses.Accordingly, History of Rock Part 1 runs seven weeks, while History of Rock Part 2 is six weeks in length.The courses are offered consecutively, with Part 2 immediately following Part 1; students electing the sequence thus have a similar experience to those taking the regular semester-length course at Rochester.Coursera has found that students tend not to stick with lectures that extend longer than about fifteen minutes; they strongly recommend Volume 19, Number 3,