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a sin(bx+c) +d
Author:
Aleck Chang
slider the bar, and observe the difference between new curve and origin curve
GeoGebra
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三位數除以一位數（二）
四邉形 (四年級) 教師版
兩位數除以一位數（二）
GeoGebra笔记功能体验课件
拼砌四邊形
Discover Resources
相似多邊形-縮放的性質
斜率
橢圓的定義（by Jutor）
sin函數相加
Multiplication of Directed Numbers
Discover Topics
Tangent Line or Tangent
Quadratic Functions
Polygons
Stochastic Process or Random Process
Trapezoid