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梯形面積(求上底)
Author:
lkkbmaths teachers 檔案儲存用
GeoGebra
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異分母分數減法
算柱 (兩位數)
【案例】圆柱体内放置一个大球六个小球
【案例】2018年全国1卷理科12题
兩位數加法
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test2
Golden Spiral
平移法（二）
解題三
邊長與三角形（一） 的複本
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Geometric Mean
Polynomial Functions
Planes
Straight Lines
Linear Equations