Excerpt from Motion Pictures for InstructionEducators have taken the educational value Of visual data for granted for many years, and the classroom is full Of blackboards, maps, pictures printed on paper, or enlarged and projected by lenses. The tremendous vogue of the moving picture and the new emphasis it has given picture language, has impelled educators to bring films and slides into the schools. But the motion picture, especially, involved the use of unfamiliar and costly machines, and films required a technical knowl edge Of storage, patching and shipping.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.