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ptccs2new4
Author:
Cheung Wing Chuen
GeoGebra
New Resources
兩位數除以一位數（二）
兩位數加法
漂亮的摇摆曲线
平行線的斜率
第八周作业
Discover Resources
P6 圓周02B
圓錐截痕模型
拋物線3--平行四邊形法
将三角形面积一分为二
生日问题
Discover Topics
Normal Distribution
Reflection
Symmetry
Upper and Lower Sum or Riemann Sum
Surface