PowerPoint Slide
Visual aids and slides could be part of a prepared speech, but not an impromptu speech.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Clipart - tango x office presentation."
http://openclipart.org/detail/36505/tango-x-office-presentation-by-warszawianka
Open ClipArt
CC BY-SA.