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特製的門 2
Author:
李春培
特製的門2
https://www.facebook.com/video.php?v=730160733696759&fref=nf
GeoGebra
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【案例】2013年安徽高考15题
球體建築師
兩組對邊相等和有直角的四邊形
第八周作业
三位數除以一位數（二）
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圖騰 DEMO
circle1
內公切線段長求法
一线三等角模型
小四_小數的認識
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Probability
Geometric Distribution
Tree Diagrams
Quadratic Equations
Power Functions