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johnmayhk
GeoGebra
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球體建築師
【案例】2018年全国1卷理科12题
四邉形 (四年級) 教師版
錐體建築師
找出對稱軸
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旋轉動畫
二元一次方程式圖形
黃金矩形
模拟龟兔画板
Quiz on Addition and Subtraction of Directed Numbers (1)
Discover Topics
Logic
Variance
Triangles
Surface
Upper and Lower Sum or Riemann Sum