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加法有圖案
Author:
Cobie Lo
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
異分母分數減法
畫出對稱圖形
三位數除以一位數（一）
Discover Resources
gjc102a19 三角形的對折
四次函數
等高
周界-平移法(練習三)
dragon(龙)
Discover Topics
Differential Calculus
Poisson Distribution
Linear Functions
Similar Triangles
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