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FILM AND EDUCATION
able for old ones. In view of the great expansion anticipated in the use of audio-visual materials, the possibilities of designing special audio-visual equipment for permanent installation in the classroom, and other likely but indefinite developments in the audio-visual field, it is of utmost importance that the architect's plans for new school buildings be based upon the greatest possible foresight in this regard. It should be emphasized that the alternative for planning new school buildings to accommodate the audio-visual program adequately is subsequent modification of the buildings, probably at a cost twice as great and with a result only half as effective.
(4) Equipment and materials. As stated previously, objecttive information is not available as to what constitutes adequate audio-visual equipment and materials for schools of various sizes and types. However, there are a few general principles to which reference should be made because of their bearing on the budget, (a) The program should be based upon a broad view of the audio-visual field — a wide variety of equipment and types of materials should be included, (b) Materials should be selected upon the basis of the contribution they can make to the educational objectives of specific units of study in various subject-matter fields. This does not mean, however, that close integration in the various conventional courses of study is the only criterion. Audiovisual materials are destined to exert considerable influence upon the slow-to-change, textbook-centered curriculum. The selection of audio-visual materials depends upon so many factors that ic is difficult to make even broad generalizations in regard to the matter. One of the most fundamental but most difficult problems is that of determining which specific materials of the several different types would contribute most to the curriculum of a particular school, (c) The less expensive materials, especially those which are most basic to the various courses of study, i.e., materials for which there is a relatively great and frequent need, should be deposited within each school building so that the teachers will
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