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长方形与正方形

北师大版二年级数学下册. 长方形与正方形. 大长山中心小学 宁秀芬. 认识长方形. 长. 宽. 宽. 长. 有两条长 , 两条宽,四个直角。. 认识正方形. 边. 边. 边. 边. 有四条一样长的边,四个直角。. 比较长方形与正方形. 1. 2. 4. 3. 说一说,下面几号图形是长 方形,几号图形是正方形。. 1 号是长方形, 2 号是正方形。. 在方格纸上画一个长方形和一个正方形. 正方形. 长方形. 数一数图中正方形有几个?你发现了什么?. ( )个. 2. ( )个. 5. ( )个. 8.

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长方形与正方形

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  1. 北师大版二年级数学下册 长方形与正方形 大长山中心小学宁秀芬

  2. 认识长方形 长 宽 宽 长 有两条长,两条宽,四个直角。

  3. 认识正方形 边 边 边 边 有四条一样长的边,四个直角。

  4. 比较长方形与正方形

  5. 1 2 4 3 说一说,下面几号图形是长 方形,几号图形是正方形。 1号是长方形,2号是正方形。

  6. 在方格纸上画一个长方形和一个正方形 正方形 长方形

  7. 数一数图中正方形有几个?你发现了什么? ( )个 2 ( )个 5 ( )个 8 ( )个 11

  8. 图中共有多少个长方形? 一共有9个长方形

  9. 试一试 用1张长12厘米、宽8厘米的长方形纸,折一个最大的正方形。正方形的边长是几厘米?

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