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The University of Illinois at Springfield and the Institute of Technology, Sligo Ireland are building a model of inter-institutional online class collaborations using the preview version of Google Wave. In test waves during the fall semester of 2009, the two universities joined students in a multi-week collaboration on the topic of Internet impact on energy sustainability perceptions in Europe and the U.S. The collaboration was less about the topic and more about identifying the features of the new collaboration tool that work best in facilitating student group work and instructor engagement. The results of this test will be implemented in further collaborations to be tested in a variety of disciplines by both institutions.