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任務4
Author:
gklwong
Topic:
Triangles
GeoGebra
New Resources
異分母分數減法
兩位數除以一位數（一）
四邉形 (四年級) 教師版
算柱 (兩位數)
兩位數加法
Discover Resources
任務2
【三角函數】sinx的平移
可動多邊形
SIN繪圖
圓的切線方程
Discover Topics
Perimeter
Logarithmic Functions
Cosine
Orthocenter
LCM and GCD