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Author:吳秉沂

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四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
兩位數加法
兩位數除以一位數（二）
判斷球體

Discover Resources

多邊形的外角和
平行四邊形的面積
國旗1
一筆畫圖形
达芬奇椭圆仪

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Step Functions
Mathematics
Volume
Arithmetic Operations
Plane Figures or Shapes

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