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4S3 01b 對稱 2010328
Author:
makkei
GeoGebra
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比較五件物件的重量
撒针估算面积实验
常见四边形是否是双心四边形
科赫雪花
第三周作业效果演示
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優良作品1
梯形
平行四邊形
S4 math
國旗
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Geometric Mean
Hyperbola
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Addition