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Directed numbers
Geogebra infographic
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Author:
Chan Yip-Cheung
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Geogebra infographic
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New Resources
兩位數除以一位數（一）
找出對稱軸
四邊形的特性
四邉形 (四年級) 教師版
三位數除以一位數（一）
Discover Resources
緯度、日照、影長
优秀资源
GGB作業
congruent (ASA)
轨迹最值功底测第8题
Discover Topics
Centroid or Barycenter
Multiplication
Cone
Statistical Characteristics
Triangles
