Welcome to the “Types of Audio-Visuals” video lesson intended to discuss types of AVs and their strengths and weaknesses. This video lesson is the second of six in "The Art of Presentational Speaking: Materials" video course, which teaches learners how to prepare supplemental presentation materials. During this lesson, learners will be introduced to the four factors that must be considered when choosing the best type of AV. In addition, viewers will learn the pros and cons of some of the most common types of AVs.