We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
Types of Visual Aids and Their Uses 113
impossible to darken the various rooms of the building in such a way that each will be reasonably satisfactory for projection, it would be better to simply devote one room to projection purposes, darkening it as thoroughly as possible.
The projection equipment, including the screen and such other accessories as may be needed, will require a certain amount of care. It is hardly necessary to state that unless there is a fixed responsibility for a certain piece of equipment which is used by many people, the equipment will soon become useless to all. If the school unit or system is not large enough to have a visual-instruction department which will take care of the physical equipment, it is advisable to appoint some competent member of the staff to handle it and release that person from certain other duties to compensate for the time required. If this does not seem desirable, undoubtedly there are one or two advanced students in the school who are mechanically inclined and who would be pleased with the opportunity to become responsible for the care and operation of a projector. It has been found that students of this type are more thorough in caring for the equipment than members of the teaching staff who may have other duties to perform.
There are some schools that have organized a training program for projectionists which not only trains high-school pupils in a useful vocation, but also provides well-trained operators for showings within the school. Assignment for training and the actual handling of projection can be made during activity and study periods so as not to interfere with participation in class discussion. Sometimes a high scholastic standing is a requisite to assignment as a projectionist in training or in actual service.
Evaluation of the Motion-Picture Film. There are certain matters which should be considered carefully before plans are made to use a motion picture in connection with the instructional program. It is well to ask first whether or not motion is necessary to present the message. Certainly a motion picture of the Capitol Building in Washington, D. C, would present no advantage over a projected still picture of the same building, unless there is some action in the picture which is important. A good plain or colored glass slide of the building would be much more satisfactory, would be easier on the eyes of the pupils, and could be left on the screen as long as it might be needed for discussion purposes. Motion is desirable, of course, in any situation where the recording of natural motion or animation is needed to give a clear impression of the topic under discussion. A simple rule to follow, therefore, is to use motion only where motion is necessary.