1. Cooperative learning: An inside story
2. Aronson, E. A. (1997). Cooperation in the classroom: The jgsaw method. Longman.
3. Group variables influencing the transfer of conceptual behavior.
4. Cohen, J. (1998). Statistical power analysis for the behavioral sciences. (2nd ed.). Lawrence Erlbaum.
5. Active learning increases student performance in science, engineering, and mathematics