In topic slides, use parallel language in all items. Do not number them unless you need to refer to them by number. Every slide should be fully readable from the back of the room. If you can read a slide held at arm's length in front of a bright light, it will probably be easily read by your audience. Pitfalls Inadequate Slides.
Poor slides are a common problem that can completely negate an otherwise good presentation .
Illegibility - Be sure that the print on each slide is bold enough and large enough to be legible from any place in the room. Legibility will be increased if there are contrasts in brightness and tone between illustrations and background. Overcrowding - Avoid crowding too much material onto one slide. Keep slides simple, with plenty of open space. An uncluttered appearance is essential.