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Author:
johnmayhk
GeoGebra
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平行線的判定
折扣
GeoGebra数学资源(4-8年级)
科赫雪花
撒针估算面积实验
Discover Resources
try_111
優良作品2
ANG_ FIRST_GGB
A的影响
里约奥运火炬花环模型
Discover Topics
Logarithmic Functions
Integers
Subtraction
Binomial Distribution
Random Experiments