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半角模型1
Author:
李莹
GeoGebra
New Resources
拼砌四邊形
四邉形 (四年級) 教師版
三位數除以一位數（一）
画直线等分三角形的面积
兩位數除以一位數（二）
Discover Resources
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優良作品1
複合圖形(七)
周界
內擺線觀察
Discover Topics
Functions
Sequences and Series
Set Theory
Polygons
Arithmetic