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三節棍1060317
Author:
陳正鴻
GeoGebra
New Resources
異分母分數減法
柱體建築師
球体的体积推导
錐體建築師
兩組對邊相等的四邊形
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賺賠：例1
神之作
二次函數04
梯形面積 Area of Trapezium
剪切成正三棱柱（制作：李三军，修订：孟宝兴）
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Upper and Lower Sum or Riemann Sum
Cylinder
Arithmetic
Cosine
Difference and Slope