This document discusses various audio visual educational technologies that can be used to enhance student learning including presentations, podcasts, screen capture, social learning platforms, and learning management systems. It provides examples of how a history teacher could incorporate tools like PowerPoint, Jing, VoiceThread, and virtual classrooms to engage students in learning about new topics. The technologies allow for multimedia content creation and sharing, collaboration, and feedback. However, their effective use requires time for teachers to learn the tools and design instruction that leverages them.