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翹翹板
Author:
何姵葶
GeoGebra
New Resources
異分母分數減法
【案例】2018年全国1卷理科12题
找出對稱軸
sanjiaohanshu
畫出對稱圖形
Discover Resources
Area of polygon
優良作品7(孟倫)
線型函數與圖形
三角形的面積的副本
连续开方（制作：谢建华，修订：孟宝兴）
Discover Topics
Rectangle
Stochastic Process or Random Process
Multiplication
Combinatorics
Pythagoras or Pythagorean Theorem