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ycmc P5 Math lesson 1-3
Author:
LI MAN FAI
GeoGebra
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拼砌四邊形
画直线等分三角形的面积
四邉形 (四年級) 教師版
異分母分數減法
畫出對稱圖形
Discover Resources
parallelogram
百分數
Escher 階梯
三角形面積
第4課
Discover Topics
Geometry
Equations
Perimeter
Congruence
Intersection