There are very few good reasons to animate sideshows. Animations within a slide you control yourself are fine, just don't loose control of the sequence of the presentation Tiny Type. Few things alienate an audience so quickly as having to strain to see a screen. Make sure that you don't put your listeners through this ordeal. Too Many Slides.
Some presenters try to cram too many slides into a speech.
This results in one of two problems. Either they go overtime, or they pull slides off the screen faster than the audience can see them. Either result can provoke considerable frustration from the audience. Plan on spending at least a minute with every slide you use. If it doesn't justify the investment of sixty seconds, it probably isn't work showing in the first place.