If your slides contain text, and most slides do — then, there is a chance that some words may be misspelled! Yes, you can do a manual check by proof-reading all your slides one by one. Alternatively, you can run a spell check on the entire presentation, and make corrections based on suggestions provided by PowerPoint. Here’s how you can do a spell check in PowerPoint.
Learn how to run a spell check on your entire presentation in PowerPoint 2011 for Mac.

