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圆的面积展开的副本
Author:
tang
,
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。
New Resources
四邉形 (四年級) 教師版
兩組對邊相等的四邊形
找出對稱軸
畫出對稱圖形
算柱 (兩位數)
Discover Resources
內擺線
螢橋國中80209傅筱筑
Measuring Volume 3
半椭圆面积的定积分动态演示.许兴华数学
n等分单位圆作正弦曲线
Discover Topics
Division
Upper and Lower Sum or Riemann Sum
Probability
Continuity
Parallelogram