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彩虹爱心
Author:
陈丽婷
GeoGebra
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三位數除以一位數（二）
拼砌四邊形
画直线等分三角形的面积
第八周作业
【案例】2018年全国1卷理科12题
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Artificial Neural Network
讀磅 (練習)
angles sum of a triangle 1
好多好多正方形
External tangent
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Terms
Vectors
Real Numbers
Integers
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