Purpose

Maintain a prioritized, evidence-based log of topics where the learner consistently struggles. Drives which skills to activate next and prevents ignoring recurring problems in favor of always-new content.

Activation

• check-understanding, challenge-generator, or misconception-detector flags a repeated error. Returning learner with prior weak areas. Planning a study/revision session. Learner reports a covered topic is still unclear.
• Skip if: first encounter with a topic (not a weak area yet). Error is a one-time slip. Learner declines tracking.
• Routing: feed into lesson-plan and revision-mode. Use tracker to decide between challenge-generator (reinforce) vs teach-concept (re-teach) vs socratic-mode (deepen). Mark confirmed improvements and remove from active tracking.

Inputs

• Error event (topic, type, session date, recurrence count), prior weak-area log, learner's current goals.

Severity Scoring

Score each weak area 1–5: score = recurrence × type_weight + staleness_bonus

• Type weights: Surface=1, Structural=2, Deep=3
• Staleness: +1 if not addressed in 3+ sessions