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Teaching how to prove, not just how to compute
AP Math Justification Trainer
Framework CERC — Claim · Evidence · Reasoning · Conditions
Units · problems 4 units · 7 / 7 / 7 / 4
Courses Calculus AB · Calculus BC · Statistics
Security JWT (jose) · CSRF · DOMPurify · rate limiting
Addresses the 3→5 gap in AP Math: students who master the computation but lose points on written justification. The CERC framework (Claim · Evidence · Reasoning · Conditions) makes mathematical argumentation trainable by breaking every proof into four explicit, required moves. Scoring is deterministic completeness — not semantic AI grading — because the first habit to install is structural integrity, not eloquence.
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