Explain projected aids and non-projected aids with examples.
Explain projected aids and non-projected aids with examples.
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Projected aids are visual instructional devices that are shown with a projector. Examples of projected aids include slides, filmstrips, silent films, and cartoons. These aids are used for magnification of images on a screen in dark or semi-dark conditions. There are three important methods of projection: direct projection (using slide and film projectors), indirect projection (using an overhead projector), and reflected projection (using an opaque projector or epidioscope).
Non-projected aids, on the other hand, are visual instructional devices that are simply presented without any projection equipment. Examples of non-projected aids include blackboards, charts, and posters. These aids do not require any electricity and are appropriate for low-budget extension work. They are also useful in small group situations and do not require much artistic ability in their use.