9: Use video or audio
Use video and audio when appropriate. Using video clips to show concrete examples promotes active cognitive processing, which is the natural way people learn. You can use video clips within PowerPoint without ever leaving the application or tuning on a VCR. Using a video clip not only will illustrate your point better, it will also serve as a change of pace, thereby increasing the interest of your audience.
You can use audio clips (such as interviews) as well. But avoid using the cheesy sound effects that are included in PowerPoint (such as the sound of a horn or applause when transitioning slides). The use of superfluous sound effects attached to animations is a sure way to lose credibility with your audience.
#10: Spend time in the slider sorter
According to the Segmentation Principle of multimedia learning theory, people comprehend better when information is presented in small chunks or segments. By getting out of the Slide view and into the Slide Sorter view, you can see how the logical flow of your presentation is progressing. In this view, you may decide to break up one slide into, say, two or three slides so that your presentation has a more natural and logical flow or process. You'll also be able to capture more of the gestalt of your entire presentation from the point of view of your audience. You will be able to notice more extraneous pieces of visual data that can be removed to increase visual clarity and improve communication.