在包含情境中理解 1 ÷ a/b = b/a 。
Anthony Or. GeoGebra Institute of Hong Kong.
orchiming@gmail.com
English version: http://www.geogebratube.org/material/show/id/14541
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May 31, 2014 -
1:35 AM
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GeoGebra Institute of Hong Kong
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GeoGebra Institute of Hong Kong