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32鄭羽甯
GeoGebra
New Resources
異分母分數減法
四邉形 (四年級) 教師版
找出對稱軸
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（二）
Discover Resources
判斷三角形
Ambiguous Cone
小阿樂
动圆在定圆上滚动
DSE Mathematics
Discover Topics
Functions
Tree Diagrams
Geometry
Complex Numbers
Multiplication