Hi, everyone: I pass along my recent article describing and testing a general tool for creating learning teams that are each heterogeneous, and thus are balanced across the class (see j.mp/XwpxEy). The software tool rests on R, and there are introductory examples in the paper and at j.mp/1x41Z3b. If you have any questions, I'm happy to help. Best, Ryan ----------------------------------- Ryan T. Moore, Ph.D. www.ryantmoore.com ----------------------------------- Assistant Professor Department of Government American University