The extension of the new thinking curriculum into the classroom suggests that the redefinition of learning requires a collaborative classroom. Provided in this third guidebook in a series of nine video conferences is an elaboration on the definition of classroom collaboration, a description of classroom characteristics and student and teacheer roles, a summary of relevant research, a discussion of issues related to instructional innovation, and a presentation of examples of collaborative teaching methods. Characteristics of a collaborative classroom include shared knowledge and authority among teachers and students, teachers as mediators, and heterogeneous student groupings. Also included are pre- and post-conference activities, a program evaluation, essays and school-based activities highlighting teleconference topics, information about other video conferences in the series and computer forums, course credit information, a list of supplementary materials, 58 references and 3 video sources, and a list of 9 regional resources. Presenters' biographical information is given. (LMI)