To assess the effectiveness of a cooperative learning activity, students were randomly assigned to small groups and asked to lead an online discussion. Responses to a survey administered at the completion of the course suggest that the activity was effective in meeting its goals of promoting student interaction and increasing perceived student learning. More interesting are results showing that student satisfaction with elements of cooperative learning was positively related to their satisfaction with the activity, perceptions of the success of the activity in meeting its goals, perceived amount of learning, past group experiences, and grade on the activity. These results are discussed in the context of the benefits of constructing group activities with the elements of cooperative learning in mind. (Contains 2 tables.)