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Reasons to Use Visual Aids. 1  Improves audience understanding and memory. 2  Serves as notes. 3  Provides clearer organization. 4  Facilitates more eye contact and motion by the speaker. 5  Contributes to speaker credibility.
Visual aids make learning concrete and meaningful. You may describe the physical features of the Indo- Gangetic plain, but motion pictures, filmstrips, maps, charts, diagrams; pictures would make your verbal description concrete. An additional meaning is attached to verbal instruction when teaching aids are used.