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題八的副本
Author:
xiaofeige1200
,
GeoGebra Institute of Hong Kong
GeoGebra
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異分母分數減法
兩位數加法
画直线等分三角形的面积
【案例】2018年全国1卷理科12题
四邉形 (四年級) 教師版
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qqqqqqqqqq
圓周的計算
畢式定理 (13)的副本
[洋葱] 四边形与旋转变换
Twghmkc_運動與我
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Set Theory
Congruence
Variance
Surface
Distributions