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Everyone makes mistakes, but mistakes are particularly embarrassing when they are 10 inches tall on a screen. Use your software program's grammar and spell checkers, but remember that automated checkers don't locate every error. Always edit and proofread your presentation slides.
Perhaps the most common grammar error seen in slides is faulty parallelism in lists. Here is an example of incorrect parallelism and correct parallelism in a list:
| Incorrect Parallelism | Correct Parallelism |
| Tasks: | Tasks: |
- Perform needs analysis.
| - Perform needs analysis.
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- Creating usability questions.
| - Create usability questions.
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- Carry out usability test.
| - Carry out usability test.
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Another common problem is the use of a single subset in a list:
| Incorrect: Single Subset | Correct: No Single Subset |
| Task: | Task: Carry out usability test. |
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The creator of this slide should have corrected the spelling error ("Receiver") and the inconsistency in initial capitalization of the list items.
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