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1977北京理8
Author:
常振虎
1977北京理8
GeoGebra
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三位數除以一位數（一）
拼砌四邊形
畫出對稱圖形
四邉形 (四年級) 教師版
【案例】2018年全国1卷理科12题
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三角形的外接圓
Sectors 扇形
重心性質
一元二次方程式-應用問題(兩圓相切-2)
Locus (Two points 1)
Discover Topics
Vectors 3D (Three-Dimensional)
LCM and GCD
Hypothesis Testing
Arithmetic
Geometry