{
  "unit_id": "demo_unit_v1",
  "template": "flight_path",
  "version": "1.0.0",
  "locale": [
    "de-DE"
  ],
  "grade_band": [
    "5",
    "6",
    "7"
  ],
  "duration_minutes": 8,
  "difficulty": "base",
  "subject": null,
  "topic": null,
  "learning_objectives": [],
  "stops": [
    {
      "stop_id": "stop_1",
      "order": 0,
      "label": {
        "de-DE": "Stop"
      },
      "narration": {
        "de-DE": "Narration"
      },
      "interaction": {
        "type": "toggle_switch",
        "params": {}
      }
    }
  ],
  "precheck": {
    "question_set_id": "demo_unit_v1_precheck",
    "required": true,
    "time_limit_seconds": 120
  },
  "postcheck": {
    "question_set_id": "demo_unit_v1_postcheck",
    "required": true,
    "time_limit_seconds": 180
  },
  "teacher_controls": {
    "allow_skip": true,
    "allow_replay": true,
    "max_time_per_stop_sec": 90,
    "show_hints": true,
    "require_precheck": true,
    "require_postcheck": true
  },
  "assets": {},
  "metadata": {
    "author": "Unknown",
    "created": "2026-01-13T13:34:41.414170",
    "curriculum_reference": ""
  }
}