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張春興0302
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張春興
GeoGebra
New Resources
錐體建築師
【案例】2018年全国1卷理科12题
兩位數除以一位數（一）
球体的体积推导（优化版）
判斷球體
Discover Resources
S5 Linear Programming
lms2702
凸型表面積計算（平移部分面、角度轉換法）
动点问题
erwtewt的副本
Discover Topics
Quadrilaterals
Differential Calculus
Normal Distribution
Surface
Natural Numbers