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橢圓規Ellipsograph of Parallelogram
Author:
宋政蒲
Topic:
Constructions
,
Ellipse
,
Parallelogram
現實工程上仍不易做到的橢圓畫法
GeoGebra
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双心四边形
撒针估算面积实验
折扣
比較五件物件的重量
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五下_分數除法( 教師版)
parallelogram
展開圓面積 (講義版)的副本
商高定理\水2的副本
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Planes
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