Concept Explainer — illustrative example

INPUT
Explain an average to a learner who can add and divide.

RESULT
For 2, 4 and 6, add to get 12, then divide by 3 values to get an average of 4.

REVIEW
An explanation should start from what the learner knows. Ask for a small worked example and a boundary case rather than a longer definition alone.

This is a teaching example, not a live execution record.