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ROC國徽1060310
Author:
陳正鴻
GeoGebra
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兩組對邊相等的四邊形
異分母分數減法
三位數除以一位數（二）
算柱 (兩位數)
兩位數加法
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二次函數：過任意三點，求函數關係式
地球－完整球面
Net of pyramid
hihihiADFASDF
宇宙模型
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Inequalities
Vectors
Dilation
Parametric Curves
Probability