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西姆松
Author:
JJ Wong
GeoGebra
New Resources
球體建築師
判斷球體
三位數除以一位數（一）
【案例】圆柱体内放置一个大球六个小球
兩位數加法
Discover Resources
複雜的解法
曲柄滑塊
斜率
均分
用方程解周界問題
Discover Topics
Reflection
Hypothesis Testing
Geometry
LCM and GCD
Distributions