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Author:
范欣茹
GeoGebra
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兩位數加法
算柱 (兩位數)
拼砌四邊形
異分母分數減法
【案例】2013年安徽高考15题
Discover Resources
HKCEE 2009 Q17
区域积分例子
BkD_act15_02c
上課用
面积平分线
Discover Topics
Cuboid
Arithmetic Operations
Functions
Subtraction
Arithmetic