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Author:
Louis，Hong
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畫出對稱圖形
三位數除以一位數（一）
兩位數加法
判斷球體
找出對稱軸
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軌跡
滾動的圓
補角關係
滑杆的數字接力賽-平移旋轉三角形填滿四邊形(加邊框)
手机下载课件
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Differential Equation
Derivative
Statistical Characteristics
Scalene Triangles
Similar Triangles