warm-up

Creates a single 3-5 minute warm-up activity (bell-ringer, do-now) that activates prior knowledge and connects to the day's learning objective.

Input

{
  "objective": "Students will compare fractions with unlike denominators.",
  "grade": "4",
  "subject": "Math",
  "minutes": 5
}

Output

{
  "tool": "warm-up",
  "warm_up": {
    "title": "Fraction Comparison Challenge",
    "instructions": "Look at the two fractions on the board: 3/8 and 1/4. Without computing, which is larger? Write your prediction and reasoning in your journal.",
    "duration_minutes": 5,
    "materials": ["whiteboard", "math journals"],
    "connection_to_lesson": "Builds intuition for comparing fractions before formalizing with common denominators"
  },
  "human_review_required": true
}

Do NOT use this atom for

• Full lesson planning (use lesson-planner)
• Assessment item generation (use assessment-item)
• Activities longer than 10 minutes (use activity-generate)

Pipeline note

Follows references/method.md at the Generation step (warm-up creation). Output conforms to references/metadata-schema.md. human_review_required: true — teacher should verify appropriateness for their specific class.