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623劉虹圻 雪花
Author:
呂麗珠
GeoGebra
New Resources
sanjiaohanshu
【案例】2018年全国1卷理科12题
近似值：有效數字
錐體建築師
兩位數加法
Discover Resources
三角形內切三圓
二次曲線-1.圓錐曲線
圓柱曲面
sine graph (reduce to 1/2 and then translate leftward by 15 degree)
Control a, b and c in quadratic function
Discover Topics
Median Line
Upper and Lower Sum or Riemann Sum
Ratios
Angles
Combinatorics