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Chapter 12. Planning Your Visual Aids > Revelation vs Overlay—

Revelation vs Overlay—

The process of covering part of an overhead transparency and revealing the contents by sliding the cover down is disliked by a considerable portion of the population. There is nothing wrong with this procedure—it’s simply a matter of personal preference. However, you never know who in the audience won’t like it. So, if possible, avoid it.

The other reason for using overlays rather than revelation is to present complicated graphs or other forms of data in such a fashion that the audience won’t be overwhelmed by it. Building the information slowly, as illustrated below, allows time to absorb the information and to more easily see the relationship of the data being presented.


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