A diagram appears on one textbook page while its explanatory labels appear on the facing page, forcing learners repeatedly to search between them. Which revision most directly reduces unnecessary cognitive load?

Correct answer: Place the explanatory labels beside the relevant parts. Placing labels beside the relevant parts removes the split-attention problem and the need to search between pages.

• Pre-teach all definitions before showing the diagram. Pre-teaching definitions does not remove the search between facing pages.
• Add a second worked example after the diagram. A second worked example adds material but does not fix the split layout.
• Provide narration together with the complete written text. Narration with the complete written text adds redundancy and does not address split attention.