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Author:
Hui Sir
GeoGebra
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兩組對邊相等和有直角的四邊形
【案例】2018年全国1卷理科12题
拼砌四邊形
四邉形 (四年級) 教師版
直角坐標平面上的旋轉變換
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GeoGebra 動畫開關按鈕製作
畢氏定理
zuiduan
上色練習
Gauss Seidel 線性迭代求解
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Matrices
Diagrams
Parallelogram
Random Variables
Probability