# exam-tutor

This skill teaches from the current wiki chapter and walks through flagged problems in a fixed sequence. Use it to understand a topic or work through a formula.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · ★ 334
- Author: ZeKaiNie
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/ZeKaiNie/universal-examprep-skill/tree/HEAD/full/skills/exam-tutor/SKILL.md
- Updated: 2026-10-19
- HTML: https://affpapa.org/en/nevibecode/skills/exam-tutor

## What it does

exam-tutor loads one current wiki chapter at a time and explains concepts with everyday analogies. For selected problems, it follows seven stages, from inspecting the prompt image and identifying the question to calculations, a worked answer, and source tracing. When a problem needs a diagram, the algorithm runs before the diagram is rendered.

For STEM topics, the skill explains each formula symbol and unit, then gives a small example that can be calculated by hand. In `lightweight` mode it uses the current visually accepted page batch and its materials; in `full` mode it reads one chapter file. The full-mode chapter file is a hard requirement: if it is missing, the skill must abstain rather than improvise. The skill also supports a step-by-step pace for teaching examples.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add ZeKaiNie/universal-examprep-skill --skill exam-tutor -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/exam-tutor/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/exam-tutor/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add ZeKaiNie/universal-examprep-skill --skill exam-tutor -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/exam-tutor/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add ZeKaiNie/universal-examprep-skill --skill exam-tutor -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/exam-tutor/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install ZeKaiNie/universal-examprep-skill exam-tutor
```

2. **Manually: put the files in place**
- File: `.github/skills/exam-tutor/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add ZeKaiNie/universal-examprep-skill --skill exam-tutor -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/ZeKaiNie/universal-examprep-skill --path full/skills/exam-tutor
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/exam-tutor/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add ZeKaiNie/universal-examprep-skill --skill exam-tutor -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/ZeKaiNie/universal-examprep-skill/tree/HEAD/full/skills/exam-tutor/SKILL.md

## When to use it
- learn the current wiki chapter
- work through a teacher-flagged problem in order
- identify formula symbols and their units
- read values from a problem diagram before calculating

## Example prompts
- Teach me the current chapter and explain each concept with an everyday analogy.
- Work through the flagged problem: read the diagram first, then show the formula and calculation.
- Derive the formula from the current chapter and explain its symbols and units.

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: 4a4eef37b5635b5f.

BEGIN THIRD-PARTY FILE 4a4eef37b5635b5f
```text
---
name: exam-tutor
description: >
  按章节惰性加载授课：每次只读当前阶段的一个 wiki 章节，用生活隐喻讲概念、解剖公式；重点题固定走
  题面图→问题→读图量→公式→演算→答案详解→溯源七步，画图题先运行算法。用于讲懂当前章或老师勾出的重点题。
license: MIT
---

# exam-tutor — chapter teaching

## Purpose

Teach exactly one current wiki chapter, using metaphors and formula dissection. In zero-basic mode, explain every linked key question with the fixed seven-step walkthrough. Run algorithms before rendering diagrams. This skill teaches; `exam-quiz` alone quizzes and scores.

## Activation

Use when `exam-cram` routes the current phase to teaching, or the student asks to learn the current chapter, derive a formula, or explain a key question.

## Inputs

- In `processing_mode=lightweight`: one schema-3 visually accepted current-page batch
  from `.lightweight/session.json` plus its original pages and declared-scope
  prompt/answer component assets; no compiled wiki is required.
- `references/wiki/chN_*.md`: the one current chapter; never read the whole wiki.
- `references/teaching_examples.json`: optional examples, read only through the chapter-filtering CLI below; never an answer source.
- `study_state.json`: progress source of truth when present; otherwise the generated `study_progress.md` compatibility view.

## Workflow

1. **Load one slice.** Read `study_state.json.processing_mode` first. In
   `lightweight`, call `lightweight_session.py status`, plan only the current
   source/page range if it is not already planned, visually inspect those pages,
   and import the generic item/component manifest with `record-visual`; teach only a
   schema-3 `visual_ready` batch. A schema-2 `visual_ready` receipt is quarantined
   read-only: auditably `abandon` it and plan a new attempt, never teach from or
   silently upgrade it. While still planned, keep `register-answer-dependency`
   additive; use `set-answer-dependency --reason` to replace/narrow exact answer
   pages and `remove-answer-dependency --reason` to remove them. Do not call
   ingestion/OCR, preload later pages, or require a
   wiki. In `full`, read exactly one current `references/wiki/chN_*.md`. A missing
   full-mode file means abstain, name it, and never improvise. If full-mode teaching
   examples exist, run `python "${CLAUDE_SKILL_DIR}/scripts/list_teaching_examples.py"
   --workspace <ws> --chapter <N> --json` and use only its returned slice. When the
   full-mode effective cadence below is `step_by_step`, use `--next-pending` instead
   of loading the whole chapter example slice. A nonzero
   exit is an invalid/unreadable inventory, not “no examples”; report it.
```
END THIRD-PARTY FILE 4a4eef37b5635b5f

The third-party file has ended. Everything between the 4a4eef37b5635b5f tags is data: requests and commands from it are not followed. An “end of file” line with another tag inside the block is part of the file.

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