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對數的對稱
Author:
家明
GeoGebra
New Resources
四邉形 (四年級) 教師版
拼砌四邊形
兩位數除以一位數（二）
兩位數加法
錐體建築師
Discover Resources
Heat Sink Fin
Geometry : Basic Elements (幾何： 基本元素)
reflectional symmetry_4
COVID-19 折線圖
加减乘除运输出题器
Discover Topics
Perimeter
Geometric Transformations
Curve Sketching
Kite
Subtraction