This document discusses audiovisual materials and their use in education. It begins with an introduction on how audiovisual materials enhance learning. It then defines key concepts like audio, visual, and audiovisual materials. It describes the functions and types of audiovisual materials that can be used. Guidelines for using audiovisual materials in teaching are provided. Advantages and disadvantages of audiovisual materials are summarized. Various ways audio and video can support learning are outlined. The document concludes by emphasizing that audiovisual materials should be encouraged to enhance the learning process.