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圆的面积展开的副本
Author:
hong-z
,
qianqianhouhou
拖动n分圆,拖动展开展开圆,拖动拼图拼成长方形。
GeoGebra
通过上面操作请推导圆的面积公式。
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畫出對稱圖形
三位數除以一位數(一)
第八周作业
錐體建築師
球體建築師
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兩物體在時間 0 ~ 1 間,碰撞判斷
圓周
應用題解題法
螺旋线
繪畫梯形
Discover Topics
Addition
Median Value
Combinatorics
Sequences and Series
Plane Figures or Shapes