Audiovisual aids: guidelines for the use of overhead projector
1Command Hospital, Calcutta.
Abstract:
The overhead projector is a versatile audio-visual (AV) aid. When used effectively, it can render a presentation very impressive. It is easy to maintain and operate, and offers considerable flexibility of text and image projection. It is the most commonly used AV aid in teaching institutions and an appreciation of its strengths and weaknesses can be useful to teachers and students alike.
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