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Author:
chen mingchuan
GeoGebra
New Resources
畫出對稱圖形
三位數除以一位數（一）
【案例】2018年全国1卷理科12题
兩位數加法
四邉形 (四年級) 教師版
Discover Resources
clock
分數小數
三角函數 描點作圖
等高
百分數化分數
Discover Topics
Perimeter
Line Segment
Equilateral Triangles
Hypergeometric Distribution
Addition