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Penrose 阶梯
Author:
yiyi
GeoGebra
New Resources
龙形曲线-分形龙
撒针估算面积实验
正方形雪花图案
常见四边形是否是双心四边形
活动三：应用性质
Discover Resources
Why same areas?
階梯問題
小六容量和體積_裝箱問題
yuanmianjituidao
翰林數學_2下_CH3-4_大邊對大角
Discover Topics
Percentages
Perimeter
Piecewise Functions
Circle
Definite Integral