Audio material includes anything heard such as the spoken word, a health talk or music. Radio and audio cassettes are good examples of audio aids. As the name implies, audio-visual materials combine both seeing and listening. These materials include TV, films or videos which provide a wide range of interest and can convey messages with high motivational appeal. They are good when they are accompanied with interactive methods. Audio-visual health learning materials can arouse interest if they are of high quality and provide a clear mental picture of the message. They may also speed up and enhance understanding or stimulate active thinking and learning and help develop memory.