What is cognitive load and how can instructors manage it?

• A. The physical effort required to perform lab work.
• B. The speed of learning new topics.
• C. The number of students in class.
• D. The mental effort required; manage by chunking tasks, scaffolding, and reducing extraneous load.

Answer: (D)

Cognitive load is the mental effort required to process information in working memory while learning. Instructors can manage it by designing instruction that fits how learners mentally handle new material. The most effective approach is to break tasks into smaller units (chunking) so students can complete one piece before moving to the next, use scaffolding to provide supports like guided prompts and worked examples that are gradually removed as competence builds, and reduce extraneous load by presenting information clearly and eliminating unnecessary details or distractions. Also aim to reduce split attention by aligning text with visuals and use signaling to highlight key points, while sequencing content from simpler to more complex to match the learner’s capabilities.

For example, when introducing a new procedure, start with a concise, guided walkthrough and a worked example, then let students practice with prompts, and finally perform the task with fewer supports. The other options describe physical exertion, speed of learning, or class size, which are not what cognitive load measures.