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五上-CP4-第三节平行四边形面积1
Author:
冉献伟
GeoGebra
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小数 的副本
三位數除以一位數(一)
判斷球體
兩組對邊相等的四邊形
異分母分數減法
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gjh-e01-04 未知數角度的三角形
鋪磁磚練習
銳角、直角和鈍角
正方形和長方形有甚麼特性?
平方數平方數的副本
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Standard Deviation
Kite
Division
Linear Programming or Linear Optimization
Sphere