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Public casepaired-fraction-procedural-001-zh-CN
分数加法
保留学生对公分母的理解，只纠正最后一步的计算方法。
Tutor-visible context
Student context
Problem context
学生已经理解关键概念，只在最后的计算步骤上出错。
Learning objective
保留学生对公分母的理解，只纠正最后一步的计算方法。
Context window
Conversation history
No prior conversation. This case starts with the current student message.
Public boundary
What this page does not expose
This public development artifact intentionally excludes ground truth answers, known-misconception annotations, rubrics, and evaluator-only evidence. A future hidden challenge dataset must use the same fail-closed serialization boundary.