This report describes the methods used to plan, organize, and teach an integrated thematic unit in the Spring of 1994 at Fairmont Junior High School in Boise, Idaho. The unit was planned collaboratively with assistance from preservice teachers and their professors at Boise State University, the principal and teachers at the junior high school, and members of the Partners in Education board at Fairmont Junior High. The thematic unit--the Mock Fire Disaster--focused on the dangers and consequences of unplanned fires. Evaluations by the junior high teachers and responses of the secondary students were generally favorable and thoughtful. The collaborative efforts of the school, university, and community organizations alleviated some of the time, materials, and energy blocks to the development of integrated thematic units. Contains 22 references and a table of data. Sample lesson plans and excerpts from student essays are attached. (Author/RS)