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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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算柱 (兩位數)
小数 的副本
錐體建築師
找出對稱軸
球體建築師
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圓滾動
直角三角形斜邊上的高
拋物線6--包絡線法
小五_多邊形面積01
球体的截面
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Natural Numbers
LCM and GCD
Ellipse
Multiplication
Stochastic Process or Random Process