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Author:
CHOI KH
GeoGebra
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四邉形 (四年級) 教師版
四邊形的特性
【案例】2018年全国1卷理科12题
三位數除以一位數(一)
近似值:有效數字
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简易立体几何
弦中點
Congruent and Similarity
Properties of parallelogram(平行四邊形的性質)
点动成线
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Poisson Distribution
Natural Numbers
Equilateral Triangles
Ratios
Random Variables