Keith Devlin’s first MOOC on Mathematical Reasoning ended this week. My October schedule overwhelmed my good intentions; I made it through three weeks of the seven week course. I wasn’t alone. Of the 60,000 who started, 6,549 got a certificate of completion. There were various bumps in the road with the online collaboration, peer grading, and even awarding of certificates. But overall, I found it to be a fascinating experiment. As this recent NY Times article puts it, figuring out how to offer these courses for credit is still a work in progress, but if you’re in it primarily for the joy of learning, there are rich opportunities out there.