A visual aid cannot teach by themselves; they need the teachers teaching indicating how and when to use them, and the benefits derived from their use. Explain. Mention and explain any three...

A visual aid cannot teach by themselves; they need the teachers

teaching indicating how and when to use them, and the benefits derived

from their use. Explain. Mention and explain any three characteristics of

1. verbal illustrations, 2. material illustrations. Discuss any four

principles the teacher should bear in mind in the use of these

illustrations