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Author:
chen mingchuan
GeoGebra
New Resources
算柱 (兩位數)
畫出對稱圖形
四邉形 (四年級) 教師版
兩組對邊相等的四邊形
近似值：有效數字
Discover Resources
clock
時鐘問題
垂線作圖
圖形拼砌
第六次:20190412
Discover Topics
Stochastic Process or Random Process
Complex Numbers
Cone
Exponential Functions
Statistics