Interactive whiteboards allow teachers to draw, highlight and display images while simultaneously speaking. This engages both the auditory and visual channels of learners. Such multimodal input can improve comprehension, support different learning styles and help students retain complex information more effectively.
Option A:
Option A suggests exclusively verbal communication, but the use of diagrams and annotations clearly adds a visual component.
Option B:
Option B is correct because interactive whiteboards combine spoken explanations with visual representations, creating multimodal communication.
Option C:
Option C refers to purely written communication with no oral component, which does not describe a teacher explaining aloud while annotating diagrams.
Option D:
Option D focuses only on gestures, whereas interactive whiteboards mainly add visual media (text, diagrams, images) along with speech.
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