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Concept of Ratios 比的概念
Author:
Alex CHIK
拖拉紅色點,將
(讀作
比
)或
(讀作
比
比
)化至最簡。
GeoGebra
gMath 互動數學教室
http://www.geogebra.hk
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GeoGebra数学资源(4-8年级)
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afdsfsdfds
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公倍數與最小公倍數(L.C.M.)
第一組-垂心
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