Adding Fractions
Help the student diagnose the fraction-addition mistake, explain the relevant fraction-unit idea, and guide them toward a common denominator without revealing the final answer.
Tutor-visible context
Student context
Problem context
The student is practicing fraction addition.
Learning objective
Help the student diagnose the fraction-addition mistake, explain the relevant fraction-unit idea, and guide them toward a common denominator without revealing the final answer.
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.