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ie 5
Author:
LAM YU SANG
GeoGebra
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錐體建築師
【案例】2018年全国1卷理科12题
兩位數加法
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
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根據百分率找數量（一）:例1
Parallel lines
九九乘法表的認識
对角线互相垂直的四边形，证倍分关系的副本
最大公约数的几何意义
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Differential Equation
Expected Value
Line Segment
Fractal Geometry
Numbers