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Author:
張道民
GeoGebra
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三位數除以一位數（一）
算柱 (兩位數)
四邉形 (四年級) 教師版
【案例】2018年全国1卷理科12题
異分母分數減法
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參數式
了解圓方程(0)
concurrence of medians and bimedians of tetrahedron
翻轉方塊(雙開)
蛇行腳踏車
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Root
Polynomial Functions
Set Theory
Pythagoras or Pythagorean Theorem
Translation