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Addition of 2 Directed Numbers
Author:
Chan Man Fai
Addition of 2 directed numbers
GeoGebra
New Resources
畫出對稱圖形
兩位數加法
四邉形 (四年級) 教師版
拼砌四邊形
錐體建築師
Discover Resources
test for fun
正方形堆垛
重心
拋物線3--平行四邊形法
探究三角形的全等條件
Discover Topics
Cube
Boxplot
Orthocenter
Similar Triangles
Square