The document discusses audio visual aids in education. It defines audio visual aids as instructional materials that use both hearing and sight to convey information. Some key points made in the document include:
- Audio visual aids motivate students, capture attention, increase understanding and retention.
- They make learning clearer, save time and energy over verbal instructions alone.
- Common types of audio visual aids include visual aids like pictures, models and audio aids like the radio. Audio-visual aids incorporate both hearing and sight using technologies like television.
- While helpful for teaching, audio visual aids also have limitations like needing trained experts and technical support for effective use.