TY - CHAP U1 - Buchbeitrag A1 - Eimler, Sabrina A1 - Neubaum, German A1 - Mannsfeld, Marc A1 - Krämer, Nicole T1 - Altogether Now! Mass and Small Group Collaboration in (Open) Online Courses: A Case Study T2 - Mass Collaboration and Education N2 - Massive open online courses (MOOCs) become more and more popular. These course formats are typically highly flexible and attract large groups of learners from heterogeneous backgrounds. So far research in this area concentrating on success factors for low dropout rates and high satisfaction on the side of the learners in MOOCs is scarce. In this chapter, we describe experiences of a large online course offered to students of two large German universities. Based on theory drawn from a social psychological perspective on the relevance of social interaction for learning, we describe the background, structure, and specific elements of the MOOC-like course. We outline evaluation results of both small group collaboration (in workshops) and mass interaction (via forum and wiki usage) as well as results of the general evaluation of the overall course concept. We argue that the specific mixture of small and large group interaction as well as teacher- and learner-generated content is especially promising with regard to satisfaction, learning outcomes, and course completion rates. Y1 - 2016 U6 - https://doi.org/https://doi.org/10.1007/978-3-319-13536-6_14 DO - https://doi.org/https://doi.org/10.1007/978-3-319-13536-6_14 VL - 2016 SP - 285 EP - 304 PB - Springer CY - Berlin ER -