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"拈" 類遊戲之一-搶21遊戲 The 21 game
Author:
侯杰材
GeoGebra
New Resources
近似值：有效數字
兩位數除以一位數（二）
三位數除以一位數（二）
柱體建築師
四邊形的特性
Discover Resources
滾出直線之2
磁磚著色
Cactest
切線性質
两角差的正切公式的证明
Discover Topics
Upper and Lower Sum or Riemann Sum
Geometric Transformations
Means
Symmetry
Translation