Andrew talked about Mastery Learning and the importance of students having the option to do an activity over and over. They have found that multiple attempts are very important. He argues that mastery learning leads to very successful outcomes for students at Coursera.
http://blog.coursera.org/post/50352075945/5-tips-learn-more-effectively-in-class-with-mastery
Both self assessment and peer grading are very effective. Self assessement grading is completed with the guidance of an instructor developed rubric
Coursera uses discussion forums so that students can answer each others questions. Students can rate the best answers.
Should the instructor's face appear in online lectures? Which provides the best learning outcomes for students? Still not sure. However, students without the instructor face in the lectures complained that they couldn't see the lecturer.
Monitor and track what are students getting wrong. Find ways to guide them through these common mistakes.
To help instructors with working in the online environment Coursera has a portal called Coursera Instructor support
Active learning is far more effective than lectures. e.g. flipped classroom method.
