3:55 PMescalateFlagged Ms. Rivera: pull Maya aside for a 5-min review of common denominators before today's tutorial.
3:53 PMdiagnoseHypothesis: adds numerators and denominators straight across. Matched a known misconception — skipped the probe.
3:51 PMgradeGraded handwritten submission step by step — error appeared at the common-denominator step on two prior attempts.
3:45 PMgenerateGenerated a difficulty-4 exercise on adding unlike fractions, with a fraction-bar visualization (visual learner).
3:42 PMplanReviewed Maya's skill graph. Gap traced one level down: common denominators (54%) is blocking adding unlike fractions.