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Addition of 3 Directed Numbers
Author:
Chan Man Fai
Addition of 3 Directed Numbers
GeoGebra
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三位數除以一位數（二）
兩組對邊相等和有直角的四邊形
異分母分數減法
【案例】2018年全国1卷理科12题
拼砌四邊形
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定积分的概念（移动端）
test04空間中的平面
小青蛙
外心
凸透镜原理模拟
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Bar Chart or Bar Graph
Tree Diagrams
Exponential Functions
Unit Circle
Coordinates