This document discusses using visual aids when presenting. It notes that visual aids can increase understanding, save time, enhance retention, promote attentiveness, and help control nervousness. Different types of visual aids are described, including overhead transparencies, slides, flip charts, handouts, whiteboards, objects/models, videos, and demonstrations. The document provides tips for making visual aids visible, simple, colorful, and justified by the content. It emphasizes preparing and practicing with visual aids, as well as knowing how to use and deliver them effectively. Specific PowerPoint tips are also included, such as font size and avoiding excessive text or animation.