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部分佔全部的百分率 :例2 的複本
Author:
Miss Tsang
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
找出對稱軸
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
三位數除以一位數（二）
拼砌四邊形
Discover Resources
happy birthday
宬風老師的GGB教師研習教材
Contour Lines 等高線
六角柱(可側轉、上下轉)
數學傳播39卷4期, 平面幾何公式思考
Discover Topics
Addition
Differential Equation
Coordinates
Scatter Plot
Division