{
  "schema_version": 2,
  "kind": "shortening-method",
  "format": "agent-skill",
  "id": "lesson-recap",
  "name": "Lesson recap",
  "category": "Writing",
  "summary": "Reduce a lesson to its learning point, essential example, and common error.",
  "use_cases": [
    "Study recaps",
    "Training summaries",
    "Lesson revision notes"
  ],
  "word_count": 148,
  "url": "https://sho.rten.it/methods/lesson-recap/",
  "instructions_url": "https://sho.rten.it/methods/lesson-recap/SKILL.md",
  "skill_url": "https://sho.rten.it/methods/lesson-recap/SKILL.md",
  "json_url": "https://sho.rten.it/methods/lesson-recap/llms.txt",
  "plain_text_url": "https://sho.rten.it/methods/lesson-recap/prompt.txt",
  "license": "MIT",
  "sources_url": "https://sho.rten.it/sources/#lesson-recap",
  "skill_name": "lesson-recap",
  "skill_description": "Reduce a lesson to its learning point, essential example, and common error. Use for Study recaps, Training summaries, Lesson revision notes.",
  "agents_md_url": "https://sho.rten.it/methods/lesson-recap/AGENTS.md",
  "sources": [],
  "instructions": "Condense the supplied lesson into a short recap for someone who has just completed it. Preserve the central concept and enough explanation to use it correctly. This is a review of taught material, not a new lesson or an invented study plan.\n\nState the main learning point. Keep the smallest worked example that demonstrates it, including the steps or relationships that make the result understandable. Add a supplied common mistake or boundary when it prevents misuse. Keep essential definitions, notation, units, conditions, and the difference between a rule and an approximation.\n\nRemove classroom administration, repeated explanations, extra examples of the same point, and rhetorical questions. Do not replace reasoning with a list of unexplained keywords. Do not add facts, exercises, or learning objectives absent from the source. Use a few short labeled lines or paragraphs. Return only the recap, within a requested length when the necessary explanation fits.",
  "example": {
    "context": "Recap of an introductory percentage-change lesson",
    "before": "Today we learned that percentage change measures a difference relative to the starting value. To calculate it, subtract the starting value from the new value, then divide by the starting value and multiply by 100. We used a price that rose from $40 to $50. The difference is $10, and 10 divided by 40 is 0.25, so the increase is 25 percent. A common mistake is to divide by the new price, which gives the wrong percentage change. This calculation is undefined when the starting value is zero. We repeated the calculation with a second price example.",
    "after": "Percentage change = (new − starting value) ÷ starting value × 100.\n\nExample: $40 → $50 gives ($50 − $40) ÷ $40 × 100 = 25% increase.\n\nUse the starting value as the denominator. The calculation is undefined when it is zero.",
    "must_preserve": [
      "Formula uses the starting value",
      "Worked $40-to-$50 example gives 25% increase",
      "Common denominator error",
      "Zero starting value makes this calculation undefined"
    ],
    "omitted": [
      "Drops classroom narration and mention of a redundant second example."
    ],
    "kind": "illustrative"
  }
}