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Addition of 2 Directed Numbers
Author:
Chan Man Fai
Addition of 2 directed numbers
GeoGebra
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【案例】圆柱体内放置一个大球六个小球
柱體建築師
三位數除以一位數（二）
兩組對邊相等的四邊形
錐體建築師
Discover Resources
三角形五心與角度關係
圖形的繪製(7)---端點在軸上的固定長線段
正态函数曲线的特点
GeoGebra 检测教程
方格紙上畫正方形 2
Discover Topics
Hypothesis Testing
Definite Integral
Conditional Probability
Straight Lines
Bar Chart or Bar Graph