Fraction Addition

Build the student's understanding of why fraction denominators describe equal units before solving the problem.

Tutor-visible context

Student context

Conceptual Misconception

Current student message

“Why can't I add 2/3 + 1/3 as 3/6? I do not understand what the denominator means.”

Problem context

The student does not yet understand the unit represented by a denominator.

Learning objective

Build the student's understanding of why fraction denominators describe equal units before solving the problem.

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.