sample.json

{
  "title": "Sample Lesson Plan",
  "entities": [
    {
      "rel": [
        "item"
      ],
      "title": "Lesson 1",
      "class": [
        "lesson"
      ],
      "properties": {
        "explanation": "This is an exceptionally simple Modelica model.\n",
        "model": "Real x = 5.0 \"A variable declaration and equation\";"
      }
    },
    {
      "rel": [
        "item"
      ],
      "title": "Slightly More Complex Case",
      "class": [
        "lesson"
      ],
      "properties": {
        "model": "Real x = 20.0;\nReal y;\n\nequation\n\ny = sin(time);",
        "preamble": "{% macro commentary(now) %}\n\nOur solution for $x$ was {{ now.x }} and our solution for $y$ depends on time. Currently, $t={{ now.time.toFixed(2) }}$ which means that $y={{ now.y.toFixed(2) }}$.\n\n{% endmacro %}\n",
        "report": "{{ commentary(now) }}\n\n_(Note: you can change the value of time by using the slider above.)_\n"
      }
    }
  ]
}