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BkD_act15_04c
Author:
Luk Sir
GeoGebra
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異分母分數減法
【案例】2018年全国1卷理科12题
四邊形的特性
錐體建築師
第八周作业
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snooker
國旗會動
拋物線2--焦點法
三角形的三个旁切圆.许兴华数学
勾股定理
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Arithmetic Mean
Sphere
Tree Diagrams
Reflection
Confidence Interval