This document discusses designing small group discussions for MOOC platforms like FutureLearn. It proposes creating voluntary "study groups" of around 30 learners who remain together in asynchronous discussion for the duration of the course. A pilot study with 12 courses found that learners liked interacting with peers in their group and appreciated educator contributions. However, discussions sometimes decreased without direction on group work. More structure and guidance is needed for both learners on how to work in groups and educators on designing learning activities for study groups.