Abstract concepts are difficult for many students to visualise and relate to prior knowledge. Combining oral explanation with visual elements such as diagrams or concept maps engages multiple channels. This dual coding helps learners form mental images and connections, making the concept easier to grasp and remember.
Option A:
Option A is correct because it integrates verbal and visual channels, increasing channel richness and reducing misunderstanding when introducing abstract ideas.
Option B:
Option B suggests fast speaking without visuals, which can overwhelm students and make it harder to follow complex ideas because there are no visual anchors.
Option C:
Option C provides only a printed handout; while useful for later review, it offers no live explanation or opportunity to clarify doubts during the first exposure.
Option D:
Option D postpones communication to an email after class and does not permit immediate questioning, which is crucial when students encounter an abstract topic for the first time.
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