EXD.5:4.3 - Locate the error and support its correction

Compare the product with the selected criterion. Distinguish a wrong relation, an absent prerequisite, an expression difficulty and a changed question. A learner using the mean of branch means may be correct after the question changes to equal branch influence; EXD.1 and EXD.4 handle that return.

For an error under a fixed question, guide the learner to identify the wrong relation, explain why it fails here, construct the corrected relation and describe its use. Provide the missing ground or component when needed. Tie the feedback to the task criterion: “Your denominator counts two groups, while this question counts eight individuals” identifies the discrepancy.

Preserve the initial product and what was supplied in correction. A supported explanation is a result under those conditions.