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3D
Author:
賴鍵維
GeoGebra
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画直线等分三角形的面积
兩位數加法
兩位數除以一位數（一）
【案例】2018年全国1卷理科12题
三位數除以一位數（二）
Discover Resources
binary and hexadecimal
Perigal's Dissection
[S3] a GeoGebra file created by a pre-service teacher Peter (pseudonym)
三角函数线
正弦函数图像的形成过程.许兴华数学
Discover Topics
Inequalities
Geometric Transformations
Matrices
Normal Distribution
Correlation