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Types of Visual Aids and Their Uses 119
with the instructions provided with repair outfits. Careless repairs, or repairs made without the use of proper equipment and cement, may cause several feet of film to be damaged the next time the film is projected. Broken film should never be pinned, as there is danger of injuring the hands of inspectors or damaging the rewind mechanism.
Films should be kept away from extreme heat and should not be stored in rooms that are too warm. The 16 mm. film is not readily combustible, but abnormal warmth will cause it to dry and become too brittle for satisfactory projection. A cool, moist place is best for storing film.
After films have been used, they should be returned to the original containers, repacked carefully. If they are to be shipped through the mail, they should be insured at full value (about $25 per reel). The package should be addressed clearly, with information as to its contents.
Producing 16 mm. Educational Films
Some instructors in vocational agriculture have found it advisable to prepare motion pictures of summer farm activities for use during the winter, when such activities cannot be observed. Some naturalscience instructors have found it advisable to construct films of local bird and animal life. Athletic coaches have often found it advisable to produce films of outstanding athletes and teams, to be used in form study and in advertising athletic activities of the school. Colleges and private institutions have found the motion picture to be a valuable advertising medium, and some are also producing educational films of great value.
The motion-picture project of the American Council on Education has co-operated with numerous schools in the production of motion pictures. It has been the belief of those concerned with the project that the motivation and training provided through the problems of production fully justifies the nominal cost per pupil engaged in the project. The majority of these films pertain to many types of activities of the school and community. These films have also helped to develop desirable contacts between local business and community officials. Complete reports of these film-producing activities may be obtained from the American Council on Education, 744 Jackson Place, N. W., Washington, D. C.
Selecting the Subject. One of the first questions to ask is whether or not motion is necessary. If not, a good slide might serve the purpose better. Next, ascertain whether such a subject has been pro