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數學傳播39卷4期, 平面幾何公式思考
Author:
Yu-Tuan Lin
New Resources
畫出對稱圖形
兩位數加法
第八周作业
拼砌四邊形
找出對稱軸
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百分數（小學）：折扣 / 賺賠
图形
試試看吧!
二次函數圖像 Graph of Quadratic Function
方格紙上畫正方形 2
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Square
Vectors 3D (Three-Dimensional)
Logarithmic Functions
Multiplication
Ratios