This document discusses different types of supporting materials that can be used when presenting ideas, including examples, hypothetical examples, stories, comparisons, statistics, quotations, and visual aids. It provides sources for finding supporting materials, such as books, newspapers, scholarly journals, and government publications. It also offers tips for using supporting materials effectively, such as making them meaningful, only using what is necessary, establishing their credibility, and helping the audience remember them. Different ways of presenting statistics and using stories as supporting materials are also examined.