… For the Professional/Business Speaker in Each of Us There are four platform speeches: Informative Speaking teaches the audience something new. Persuasive Speaking moves the audience to think, feel, and act differently. Communication Analysis, also known as Rhetorical Criticism, provides an … Speaking: An original, factual speech by the student on a real subject to fulfill the general aim of informing the audience. Audio-visual aids may or may not be used to supplement and reinforce the message. Multiple sources should be used …