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Author:
kevin20020905
GeoGebra
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常见四边形是否是双心四边形
第三周作业效果演示
直線的斜率：水平變化 & 鉛垂變化
活动三：应用性质
折扣
Discover Resources
玉兔呈祥双兔報喜
過圓內一點與圓相切的圓
STEM 遇上 GeoGebra 研討會暨工作坊 (小學)
grass eating
正方体展开图的副本
Discover Topics
Line Segment
Inequalities
Vectors
Tangent Function
Algebra