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Public casepaired-fraction-conceptual-001-zh-CN
分数加法
先建立学生对分母表示相等单位的理解，再帮助他思考这道题。
Tutor-visible context
Student context
Problem context
学生还没有理解分母表示的单位，也还没有开始计算。
Learning objective
先建立学生对分母表示相等单位的理解，再帮助他思考这道题。
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.