The teaching system of the Open University of Britain is briefly summarized and related to a feedback model of the educational process. It is shown that the main further development needed is to improve the remedial components of the system and several developments towards this goal are described. These include computer-based information retrieval and educational systems; a dedicated teleconferencing network; and use of the standard TV set coupled, for example, to an audio-cassette recorder, a telephone line, and a light pen.