透過量度不同大小的圓的圓周，探究圓周和直徑的關係。
英文版：[url]8222 Circumference of Circles (New)[/url]
柯志明
香港 GeoGebra 學院
orchiming@gmail.com
- Target Group (Age)
- 11 – 14
- Language
- English (United Kingdom)
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