ORAL PRESENTATIONS
Graphs
The rules for graphics in print are equally applicable to lectures and may be summed up as, “Never use a chart that will take longer to explain than the information it was intended to provide.”
Use color sparingly; color can induce emotions that depend both upon the culture and the individual. Still, it can awaken an audience two-thirds of the way through a lengthy lecture. (Think of the use of color in the Rorschach plates.)
Tables
The numeric values in a table should occupy no more than three columns and include no more than three digits each, for example, 318, 3.18, 3.1 × 108.
Text
A slide should contain no more than three bullet points, as in Figure 10.22a, and should never be merely a rehash of the lecture itself, as in Figure 10.22b.
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