Presentation Aids Opaque Projectors- Advantages •“The item can be used in its original form. •Little advance preparation is required.” •http://www.rwc.uc.edu/jones/va.htm Opaque Projectors- - Disadvantages •“The entire page or pages will be projected. Any material that is adjacent to the picture or illustration will be seen by the audience. Cutting a mask that covers the area you do not want seen is important to eliminate distractions. •Opaque projectors do not provide a very bright image on the screen. It may be necessary to turn off some or all of the lights, at least those in the area of the screen, to make sure that the image is clear and understandable. •Opaque projectors are the dinosaurs of the media world and are not always available.” •http://www.rwc.uc.edu/jones/va.htm Slides- Advantages  “You can copy illustrations and pictures from a book or other source - providing you do not violate copyright laws.  The image is clearer, brighter, and sharper. Although it's generally advisable to dim the lights around the screen, it is not usually necessary to darken the entire room when using slides.  Most full-service graphic and copy stores will make the slide for you at a reasonable cost if you do not have the equipment to make the slide yourself.”  http://www.rwc.uc.edu/jones/va.htm Slides- Disadvantages  “Changing the slide can be a problem. Slides may require 3 to 5 days for processing.”  http://www.rwc.u ...
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