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Author:
Ng Cheuk Hei
GeoGebra
GeoGebra
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判斷球體
兩組對邊相等的四邊形
球體建築師
異分母分數減法
拼砌四邊形
Discover Resources
立體錯覺樓梯(使用透視法會稍有差距)
學習活動二之三解的圖形
纏繞畫2
「相似三角形」任务3的副本
交錯級數(Roger B. Nelsen)
Discover Topics
Difference and Slope
Complex Numbers
Exponent
Statistical Characteristics
Confidence Interval