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Author:
karl.tecfreayk
GeoGebra
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兩位數加法
三位數除以一位數(一)
近似值:有效數字
【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
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螺旋線
量角器
國旗
三角形的四心-五線-內外二圓的副本
三角形三边关系探究
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Multiplication
Correlation
Square
Statistics
Quadrilaterals