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3-6-13
Author:
Tzuen Hsu
GeoGebra
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四邉形 (四年級) 教師版
判斷球體
四邊形的特性
畫出對稱圖形
近似值：有效數字
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二次函數的平移(基本)
ie 5
Net of pyramid
(3D) Tasks: Pyramid, Paper folding & Solid of revolution[20170615]
画直线等分三角形的面积
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Histogram
Median Value
Logic
Logarithmic Functions
Surface