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根據百分率找數量（一）:例1的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
算柱 (兩位數)
【案例】圆柱体内放置一个大球六个小球
四邉形 (四年級) 教師版
畫出對稱圖形
兩位數加法
Discover Resources
等積的正方形與正三角形
旋轉三角形
-3 ≤ cosA+cosB+cosC ≤ 3/2
EnergyMath 2-3 棣美弗定理的副本
平移中心
Discover Topics
Upper and Lower Sum or Riemann Sum
Coordinates
Hyperbola
Matrices
Line Segment