cn-math-taxonomy: Turning K-9 math into an AI diagnostic graph
Developer open-sourced cn-math-taxonomy, a structured curriculum graph mapping Chinese K-9 math into 531 concepts, 909 prerequisites, and 2,271 diagnostic questions. Instead of generic chat answers, AI tools can now trace learning gaps across grades along prerequisite chains. Why it matters: It turns standard AI homework helpers into systematic learning planners. Free for non-commercial use.