Very little is known about how students learn from television, particularly when television is used in conjunction with a prescribed set of written materials. At the Open University of Great Britain, classes have proliferated to the extent that it is not longer possible to broadcast one lecture to accompany each unit of instruction. To reduce air time broadcasts are sometimes restricted only to the presentation of partial agruments or to evidential material. Broadcast designers must clarify the distinction between learning objectives and teaching methods so that students clearly understand the relationship of the broadcasts to the written text and the course assignments. (EMH)