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Directed numbers
Geogebra infographic
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Author:
Chan Yip-Cheung
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Directed numbers
Geogebra infographic
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Directed numbers
New Resources
兩位數除以一位數（一）
四邊形的特性
畫出對稱圖形
異分母分數減法
四邉形 (四年級) 教師版
Discover Resources
square & Triangle
Copy of 方格紙上畫四邊形
七巧板綜合的副本
周界-平移法(教學練習一)
圓心在同一直線上且相切的圓(半徑可改變)
Discover Topics
Arithmetic Operations
Unit Circle
Distributions
LCM and GCD
Incircle or Inscribed Circle
