INSTRUCTIONAL TECHNOLOGY 3(2+1)

Lesson 18 : Audio-Visual Aids

Glossary

1. The instructional devices through which the message can only be heard are known as Audio Aids
2. The instructional devices which help to visualize the message are known as Visual Aids
3. The instructional devices through which the message can be heard and seen simultaneously are known as Audio-Visual Aids
4. The teaching objective, nature of the subject matter, nature of audience, , relative cost of the various aids and availability are important influencing factors in selection of audio-visual aids.