Teaching without Teachers an Audiovisual Method of Self-Instruction

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Abstract
Thirty-five mm. slides linked with audio-tapes have been used as a method of self-instruction for undergraduate and post-graduate medical students. Impulses recorded on the second track of the tape, during playback, operate a relay which automatically changes the slides. The material can be used either with conventional projectors and taperecorders or with more sophisticated equipment in which projector, synchroniser, tape-recorder and daylight viewing screen are built into one case. The technique has many advantages. With experience material can be produced relatively easily and inexpensively. A good speaker can reach a wide audience and listeners can personally hear the views of experts. The use of sound plus vision has obvious advantages and corrections can be made to either sound or vision independently. Greater use will be made of self instructional aids in the future and more attention should be paid to relatively simple techniques such as the combination of audio-tapes with 35 mm. slides.

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