Discussion
Which of the following are visual aids ?
(i) Black Board
(ii) Posters
(iii) Public address system
(iv) Flash cards
Answer: B
The visual aids are the black board, posters and flash cards, which are (i), (ii) and (iv), option B. These are all seen by the learner, who gets the message through the eye. A public address system is an audio aid, since it carries sound only, and it is used to reach a large gathering, so (iii) does not belong in the list, and options A and D, which include it, are wrong. Option C leaves out the black board, which is a visual aid, and so is incomplete.
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