The audio-visual handbook (1942)

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74 The Audio-Visual Handbook useful. The outfit contains cellophane sheets, carbon paper, etched glass slides, cover glasses, colored pencils, colored inks, and a sufficient quantity of binding tape to make 100 slides. As certain ma _ ™~ , ,— , terials may become exhausted, replace . ments may be made at reasonable prices. f1" ^\ Sometimes it is desirable to have pu I Vj| pils make slides on a competitive basis i&* l^s^n§i anc^ to ^et tne memDers °f the class select m the best of any subject or series. This ^»jN|^^^ TSL\ tends to develop a perfection in slide ^'Vlffflu making which will be of value to the M^^> teacher by providing excellent materials for future use. This experience will be of greater value to the students them Kcystone View Co. selves as a knowledge of slides and slide A Slide-Making Outfit making will be extremely valuable in later courses. Standards Slides Should Meet. There are certain standards which should be applied to the selection of all types of projection materials, particularly those which are to be used as a part of a teaching plan. First of all, there is no good excuse for presenting visual material which is incorrect or untrue in any respect. The impressions made by projected slides are so vivid and lasting that it is almost criminal to use a slide which is not absolutely true in its portrayal of any situation. This statement refers not to unreliability on the part of the person making the slides, but to the many situations in which a slide does not convey the correct impression. If the slide is supposed to be a typical illustration of life in any section, it should be a typical illustration rather than something out of the ordinary. A picture of a farm home in Kansas should be of a farm home of average type, rather than a picture of an extremely fine or exceedingly poor one. A slide which includes pictures of different objects of various sizes should show those objects in their proper relation as to size. The same should be true of color. In short the slide should be absolutely accurate in portraying that which is to be projected on the screen. A second standard which should be observed is that of quality. The photographic quality of the slide itself should be of the very best. If the slide is tinted, the coloring should be expert and pleasing to the eye rather than splotchy or irregular. The attractiveness of the slide itself will have much to do with the