Elements of Effective Classroom Team Activities (Pimmel)
Table 1 of Pimmel (2003) lists essential aspects of cooperative learning as defined by Richard Felder and his colleagues, including: positive interdependence, individual accountability, face-to-face promotive interaction, use of interpersonal/teamwork skills, and regular self assessment of team.
Learn more about these elements in Pimmel, R. L. (2003). A practical approach for converting group assignments into team projects. IEEE Transactions on Education, 46(2), 273-282.