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任务2：勾股定理
Author:
陈丽婷
GeoGebra
New Resources
兩位數加法
算柱 (兩位數)
兩組對邊相等的四邊形
四邊形的特性
兩位數除以一位數（二）
Discover Resources
數未學習社12/15
異分母分數除法
ptccs2new4
比例中的定值問題
等比数列前n项和公式
Discover Topics
Binomial Distribution
Median Line
Division
Scatter Plot
Pythagoras or Pythagorean Theorem