MOOC Script
Groups of 1--stand alone, no script
Groups of 6--50% the rest of the signups
25% close time zone--mix of active social and reflective learners, mix of expertise
25% diverse time zone--mix of active social and reflective learner, mix of expertise
Groups of 12--50% of the rest of the signups
25% close time zone--mix of active social and reflective learners, mix of expertise
25% diverse time zone--mix of active social and reflective learner, mix of expertise