The document discusses the use of audio visual materials in teaching computer subjects. It notes that audio visual aids involve both sight and sound, and are used by instructors to clearly explain lessons to students. The document examines how audio visual materials can help students learn better by making classes more engaging, clarifying concepts, increasing vocabulary, and saving time and money. It explores the relationship between instructors' use of audio visual aids and students' study habits and participation. The study aims to help instructors improve their teaching techniques with these tools.