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Have one idea per slide.
Use contrast and size to direct audience focus.
Avoid sentences on powerpoint when speaking.
Use dark backgrounds.
Have no more than 6 objects per slide. Use one or two large images rather than several small images.
Avoid flashy transition and sound effects as they can be distracting and negatively affect your credibility.
Use single sans-serif fonts such as Arial or Helvetica. Avoid serif fonts such as Times New Roman.
Standardize positions, color, and styles.
Check the spelling and grammar.
Learn how to navigate slide deck. Audience may ask to see previous slides. Check out How to create a Prezi in PowerPoint for non-linear presentations | POWERPOINT ZOOM TUTORIAL to learn how you can make a interactive/non-linear powerpoint. | 
 
Figure 1. Serif vs. San-serif