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158 The Audio-Visual Handbook
the number of teachers rendering this judgment in connection with the "Graphic Representation," "Your World of Tomorrow," and "Teamwork" is so small that the conclusion cannot be stated with the same degree of reliability as it can be in connection with the other two filmslides. 4. All the filmslides stimulated discussion and activities in some of the classes which participated in the experiment. The evidence indicates that each of the sound filmslides can readily provide a basis for useful discussion and activities if the teacher has the inclination and wishes to spend time with the class in this manner. Other experiments are being conducted by the Committee, in cooperation with the School of Education, Harvard University, involving other specially prepared sound filmslide subjects for classroom use. None of the major experiments have been completed, but there is some early evidence that the sound filmslide, produced and used properly, will have considerable value. In industry, the high value of sound filmslides for training and promotional use has been established for several years.
The situation which affects the use of sound filmslides among schools is similar to that which affected the use of motion pictures for educational purposes a few years ago. Producers of sound filmslides state that it will not be profitable to produce subjects for use among schools until the schools have equipment on which to use those subjects. Schools do not expect to purchase equipment until there is a reasonable supply of subjects available, or reasonable assurance that such subjects will be made available as required after the equipment is secured. It is probable this deadlock will be broken as in the case of the motion picture — by some enterprising commercial organization which recognizes the potential market among schools for this type of material. Also, as in the case of the motion picture, it will be necessary for the producer or producers to work closely with the schools for the purpose of determining the exact teaching requirements.
At the outset, the chief advantage of the sound filmslide will be the very low cost at which it can be produced and distributed. When sound filmslide subjects are available for educational use, it is probable the filmstrip and accompanying record or transcription may be purchased as a unit at a cost of a few dollars. The projection and reproducing equipments are now available on the market at prices which range from $90 to $125, or more. The cost will be considerably less than the cost of sound motion pictures and projection equipment and, in many instances, it is probable that the projected series of still pic