{
  "name": "四年级下册数学知识点汇总",
  "short_name": "四年级数学",
  "description": "根据人教版四年级下册数学教材编写，涵盖四则运算、观察物体、运算定律、小数的意义和性质、三角形、小数的加法和减法、图形的运动、平均数与条形统计图、数学广角九大章节。",
  "start_url": "./",
  "display": "standalone",
  "background_color": "#FAFAFA",
  "theme_color": "#FBBF24",
  "orientation": "portrait-primary",
  "icons": [
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  "categories": [
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    "books"
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  "lang": "zh-CN",
  "dir": "ltr"
}