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Author:
lee chao ming
GeoGebra
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【案例】2018年全国1卷理科12题
球体的体积推导（优化版）
判斷球體
柱體建築師
第八周作业
Discover Resources
三角函數圖形
Multiplication of Polynomials (多項式的乘法 2)
Gazing Cow Problem (a)
新手任务绘本
Fraction(2)
Discover Topics
Similar Triangles
Quadratic Equations
Angles
Circle
Constructions