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Author:
chen mingchuan
GeoGebra
New Resources
拼砌四邊形
球體建築師
四邉形 (四年級) 教師版
兩組對邊相等的四邊形
異分母分數減法
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彩虹理髮
圓的基本慨念
阿壽工坊：「GeoGebra工作室」與「GeoGebra學習教室」分享資料
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Orthocenter
Calculus
Congruence
Ellipse
Integral Calculus