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Author:
junfeilx
GeoGebra
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兩位數除以一位數（二）
【案例】圆柱体内放置一个大球六个小球
球體建築師
異分母分數減法
柱體建築師
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等差數列2
旋轉的概念
线性规划&不等式&可行域&目标函数
翰林數學_1下_CH5-1_次數分配與統計圖表
莱洛三角形的互滚
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Circumcircle or Circumscribed Circle
Unit Circle
Intersection
Sequences and Series
Histogram