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展開基本
Author:
王玉梅
GeoGebra
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画直线等分三角形的面积
三位數除以一位數（二）
判斷球體
拼砌四邊形
兩位數加法
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乘法1
弦切角是圓心角的一半
近期新增圖檔
線性組合的副本
杨辉三角
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Cuboid
Conditional Probability
Difference and Slope
Cosine
Random Variables