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行程圖（樣本）
Author:
小學數學與生活
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
判斷球體
兩位數加法
第八周作业
拼砌四邊形
Discover Resources
二項分布與抽樣
兩函數間面積
Frequency Change
合 24（淺中深）
硬幣繞多邊形面積
Discover Topics
Upper and Lower Sum or Riemann Sum
Cosine
Geometric Distribution
Terms
Rectangle