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"拈" 類遊戲之一-搶21遊戲 The 21 game
Author:
侯杰材
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
拼砌四邊形
三位數除以一位數（一）
GeoGebra笔记功能体验课件
兩位數加法
Discover Resources
橢圓軌跡 (2)
生活中的平面圖形問題2
星星
函數交點
正棱台的侧面展开效果
Discover Topics
Similarity Transformation or Similarity
Quadratic Functions
Combinatorics
Geometry
Difference and Slope