This guidebook is based on research and development associated with the UNESCO (United Nations Educational, Scientific, and Cultural Organization) teacher education project "Special Needs in the Classroom." The aim of the project was to design and disseminate a Resource Pack of teacher education materials to help schools and teachers throughout the world become more skilled in dealing with pupils with special needs in mainstream schools. This guidebook provides: (1) theoretical and practical ideas for teacher educators involved in both preservice and inservice teacher education; (2) an account of the development of the UNESCO Resource Pack, outlining the processes of international collaboration that led to its design and the research that has informed its model of dissemination; and (3) detailed accounts of ways in which the Resource Pack might be used, including an account of its theoretical rationale and instruction that will provide the basis of training for teacher educators. The first four chapters of the guide discuss the background, research, and development of the project. The next five chapters provide advice on teacher education approaches, accounts of teacher education initiatives based upon the UNESCO Resource Pack, and suggestions on setting up and supporting teacher development projects. (Contains 69 references.) (CR)