Use when writing one textbook chapter following the fixed 四段式 structure (概念讲解 → 示范例题 → 引导练习 → 独立习题) from an outline slice plus UbD anchor — e.g. "写第三章"、"按大纲写这一章". Usually orchestrated by textbook; can run standalone for a deep-dive technical article with worked examples. Not for designing outlines o
Use when writing one textbook chapter following the fixed 四段式 structure (概念讲解 → 示范例题 → 引导练习 → 独立习题) from an outline slice plus UbD anchor — e.g. "写第三章"、"按大纲写这一章". Usually orchestrated by textbook; can run standalone for a deep-dive technical article with worked examples. Not for designing outlines or whole-book orchestration.