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第一檔
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GeoGebra
New Resources
盈利與虧蝕
正方形雪花图案
第三周作业效果演示
中华人民共和国国旗
撒针估算面积实验
Discover Resources
角平分線性質
angles sum of a triangle 3
L.C.M
基本作圖1
平移中心
Discover Topics
Plane Figures or Shapes
Percentages
Linear Programming or Linear Optimization
Integers
Fractions