The document outlines the key elements of an effective informative presentation: invention, arrangement, style, memory, and delivery. It explains that an informative presentation is designed to inform or educate an audience on a topic that is suited to their background knowledge and interest level. It should have a logical organization and structure and use an accessible style without jargon. Presenters should rely mostly on memory but can use organized notes without disrupting the flow. The goal is to smoothly deliver credible information that engages the audience.