Promoting effective collaboration and creating conditions that support enhancement of academic skills is not straightforward [6]. For example, group division is an issue to be aware of as suggested by the hints and remarks in [25, 26]. An easy and safe solution is to draw lots to assign the groups and to change them often. This way nobody needs to suffer from a dysfunctional group for too long. Popular practice that students self-organize into groups is not the best solution from the point of view of learning and teaching. Sometimes friendly relationships can complicate fair division of responsibility and work load in the group. Groups with heterogenic abilities are often the best for learning.