Slides done well can be very effective, but sometimes slides can be done so well that the audience stops paying attention to what the presenter is saying and starts focusing solely on the slide content. Or in another scenario, if the speaker has moved on but the slide has not advanced, the audience is viewing stale content. Moreover, slide after slide with no change can become repetitive and lack surprise and spontaneity. For these reasons, consider occasionally including an Invisible Slide, also known as a blank slide or a blacked-out slide, at strategic places in your lecture.

Using an Invisible Slide from time to time redirects students' focus from the slide back to you. You can use the visual pause ...

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