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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
New Resources
【案例】2013年安徽高考15题
三位數除以一位數（一）
柱體建築師
球体的体积推导（优化版）
兩組對邊相等的四邊形
Discover Resources
以 Unit Circle 了解 Sine 的正/負
test
Drag the red dots, see the area ratio of EHFG to ABCD
三角函數 描點作圖
a sin(bx+c) + d 的圖形的副本
Discover Topics
Plane Figures or Shapes
Piecewise Functions
Secant Line or Secant
Cube
Quadratic Equations