This paper, originally presented with a film introduction to the minicourse model, overviews the development of a series of microteaching courses designed to train teachers the specific teaching skills necessary to function effectively in the teaching-learning situation. Advantages of the instructional sequence are noted: focus on specific teaching skills which are precisely defined and illustrated in an instructional film, and practice in a microteaching lesson with specific feedback via video tape recordings for evaluation. The research and development sequence used in building and testing each minicourse is outlined with special emphasis given to the research-based development tuned to realities of the classroom through a series of at least three field tests and revisions. The 17 minicourses currently completed or under testing or development are listed with their course goals. Minicourse #1, "Effective Questioning in Classroom Discussion (Elementary)"--which includes the film presented with this paper--is available from Macmillan Educational Services, Inc. (See also ED 024 647 and ED 024 650) Others in advanced stages of testing are #2, "Thought and Language: Skills for Teaching Kindergarten Children with Minimal Language Experience" (SP 003 610); #3, "Effective Questioning in a Classroom Discussion (Secondary)"; #4, "Verbal Interaction" (SP 003 609); and #5, "Effective Tutoring in Elementary School Mathematics" (SP 003 602). (JS)