Stanford professor Andrew Ng SM ’98 teaches Machine Learning, a 10-week Coursera MOOC. A key component of most MOOCs are lecture segments, pictured here, where instructors write notes and mark up slides. coursera.org Feb. 8, 2013 Facebook Twitter Reddit Print Stanford professor Andrew Ng SM ’98 teaches Machine Learning, a 10-week Coursera MOOC. A key component of most MOOCs are lecture segments, pictured here, where instructors write notes and mark up slides. coursera.org