{
  "format": "viable.course-package",
  "version": 1,
  "exported_at": "2026-10-30T19:00:00.000Z",
  "title": "Sink or float: a lab beside an AI",
  "description": "Try blocks in different liquids, predict, test and find the rule, with a coach that sees your trials.",
  "guide": "For a grade 6–8 science teacher, and for app developers. An Embedded page panel holds a small density lab that tells VIABLE each prediction and what it shows now, so the coach in the corner can ask about the learner’s actual trials; four right predictions in a row count as done. Put your own page’s address in the panel; Docs → Your page in an activity shows the few lines it takes.",
  "agents": [
    {
      "ref": "coach",
      "name": "Lab coach",
      "description": "Asks for predictions and reasons, using the learner’s last trials; never states the rule.",
      "graph": {
        "version": 1,
        "name": "Lab coach",
        "entry": "input",
        "variables": {},
        "nodes": [
          {
            "id": "input",
            "type": "input",
            "config": {
              "guidance": "A question about the lab, or what the learner thinks is happening.",
              "example": "Why did the heavy block float?"
            },
            "next": "coach",
            "x": 30,
            "y": 200
          },
          {
            "id": "coach",
            "type": "llm",
            "config": {
              "model": "gpt-oss-120b",
              "includeHistory": true,
              "system": "You coach a middle school student through a sink-or-float lab. You can see their recent trials and what the lab shows now: the block’s mass, volume and density, the liquid and its density, their prediction and the result.\n\nHelp them find the rule themselves: an object floats when it is less dense than the liquid. Never state the rule. Ask one short question at a time about what they just tried, such as what they predicted and why, what changed between two trials, or what would happen if they changed one thing. When a result surprises them, ask them to compare it with an earlier trial. Two or three sentences, plain words."
            },
            "next": "reply",
            "x": 270,
            "y": 200
          },
          {
            "id": "reply",
            "type": "output",
            "config": {
              "text": "{{coach.content}}"
            },
            "x": 510,
            "y": 200
          }
        ]
      }
    }
  ],
  "question_sets": [],
  "course": {
    "title": "Sink or float",
    "description": "Find out what decides whether something sinks or floats, in a lab with a coach beside it.",
    "appearance": {
      "theme": "clear",
      "color": "#0e7490"
    },
    "audience": "teens",
    "identify": "ask",
    "identify_ask": "name",
    "sections_from": "none",
    "data_level": "process",
    "keep_recordings": false,
    "units": [
      {
        "ref": "density",
        "title": "Density"
      }
    ],
    "activities": [
      {
        "unit_ref": "density",
        "title": "The density lab",
        "summary": "Predict, drop the block in, and find the rule. Get four right in a row.",
        "role": "instruction",
        "agent_ref": "coach",
        "workspace": {
          "ai": "corner",
          "title": null,
          "layout": {
            "ai_width": 36,
            "resizable": true,
            "collapsible": true
          },
          "panels": [
            {
              "id": "lab",
              "type": "embed",
              "title": "Density lab",
              "url": "https://developers.viablelab.org/docs/examples/lab/density.html",
              "completes": true,
              "ai_sees": "events",
              "starters": [
                "Why did that one float?",
                "What should I try next?"
              ]
            }
          ]
        },
        "minutes": 15,
        "voice": null,
        "attachments": null,
        "teaching": {
          "goal": "Learners find, from their own trials, that an object floats when it is less dense than the liquid, and use it to predict new cases.",
          "help": "ask_first",
          "watch_for": "Explaining sinking by weight alone (“heavy things sink”)."
        },
        "release": "open",
        "done_when": "auto"
      }
    ]
  },
  "attribution": [],
  "notes": []
}