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Author:
Altmann Cho
GeoGebra
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四邉形 (四年級) 教師版
柱體建築師
畫出對稱圖形
sanjiaohanshu
【案例】2018年全国1卷理科12题
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IQ 波形合成圖
同底指對數函數
線性規劃
全等双子模型（等腰三角形）
圆的有关概念
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Arithmetic Operations
Isosceles Triangles
Continuity
Conditional Probability
Quadratic Equations