All the media and materials are aids in teaching and learning. They are broadly classified under three headings:
Audio-Ex: tape/Cassettes, gramophone records, radio program etc.
Visual-Ex: Pictures, charts, slides, film strips, posters, books etc.
Audio- visual-Ex: Video recording, movies, T V Program, software etc.
Wilbur Schramm has classified all kinds of media into two sections - Big media like films, TV, Video cassettes/records and small media like radio program, audio tapes, gramophone records, slides, graphics etc. These aids are again divided into 6 categories: