Fractions on a number line

{
  "version": "0.1",
  "id": "fraction-number-line",
  "title": "Fractions on a number line",
  "canvas": {
    "width": 900,
    "height": 360,
    "background": "background",
    "padding": 40
  },
  "theme": {
    "id": "clean-light"
  },
  "nodes": [
    {
      "id": "title",
      "x": 450,
      "y": 58,
      "type": "text",
      "text": "Fractions on a number line",
      "fontSize": 27,
      "align": "center"
    },
    {
      "id": "line1",
      "x": 70,
      "y": 136,
      "width": 760,
      "height": 150,
      "type": "component",
      "component": "NumberLine",
      "props": {
        "min": 0,
        "max": 1,
        "step": 0.25,
        "highlights": [
          {
            "value": 0.25,
            "label": "1/4"
          },
          {
            "value": 0.5,
            "label": "1/2"
          },
          {
            "value": 0.75,
            "label": "3/4"
          }
        ]
      }
    }
  ]
}