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小一_比較20以內的數
Author:
lkkbmaths teachers
GeoGebra
New Resources
四邊形的特性
畫出對稱圖形
第八周作业
兩位數除以一位數（二）
找出對稱軸
Discover Resources
內切圓滾動有圖更新
分數變身術
空間坐標
Space-filling curve2
小正多边形在大正多边形内的滚动（边长相等）
Discover Topics
Hyperbola
Line Segment
Conditional Probability
Standard Deviation
Rotation