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任务10：黄金螺线与向日葵
Author:
陈丽婷
GeoGebra
New Resources
球體建築師
三位數除以一位數（一）
拼砌四邊形
兩位數除以一位數（一）
四邉形 (四年級) 教師版
Discover Resources
數學作圖
展開基本
畢氏定理動畫
Multiplication of Polynomials(多項式的乘法)
-3 ≤ cosA+cosB+cosC ≤ 3/2
Discover Topics
Planes
Angles
Variance
Pythagoras or Pythagorean Theorem
General Quadrilateral