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myao1999
GeoGebra
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兩組對邊相等的四邊形
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
GeoGebra笔记功能体验课件
兩位數加法
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Apollonius Problem 4 LLP Homo 12
Geogebra 教學
巴拉拉能量
I love Taiwan.(可縮放和移動)
分数整体与部分为单位1的线段图示
Discover Topics
Parallelogram
Cylinder
Prism
Quadratic Equations
Means