This document discusses audio-visual media in education. It defines audio-visual as possessing both sound and visual components, like films and television programs. It outlines the objectives of teaching aids as making the learning process more effective and engaging for students. Audio aids include tools like radios and tape recorders, while visual aids include charts, pictures, and projectors. The advantages of audio-visual media are that it helps grab students' attention, enhances the teaching energy, and provides a realistic learning experience. However, there are also disadvantages like technical problems, student distractions, expense, and time requirements.