Flexible Transparency Technique

Abstract

The 2 x 2 transparency has long been recognized as an indispensable teaching aid to the science teacher in presenting new material. Now with this flexible transparency technique the slide takes on a more specialized meaning. With the camera at his side the alert teacher can focus in on his students at work and within an hour, if desired, the picture can be used for testing and review. When one remembers the time it takes to set up lab quizzes, with the confusion of moving pins and dried organs, the ease of projecting the previously snapped transparency is greatly appreciated. The science curriculum is much more flexible when plants plentiful in spring can be studied in the fall, and lab experiments performed in October can be reviewed in May before the yearly finals. If the flexible transparency technique could only be used in testing and reviewing, camera knowledge and its use in these directions would be well worth the effort; but there are many other exciting possibilities. Pictures in magazines and books that cannot be shown to a class without the use of a heavy opaque projector can easily be copied. (Be sure to check with the publisher for permission.) This practice enables the teacher to study with more interest, animals and plants that the student would not see naturally. Microscopic pictures can be flashed on the screen