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先估算，後看解釋
Author:
Tse Sir
先估算，後看解釋
New Resources
算柱 (兩位數)
Fibonacci Clock
Nested spiral octagon
兩組對邊相等和有直角的四邊形
球體建築師
Discover Resources
整數或分數÷分數_ 工作紙（一）_題2b
同學最喜愛的運動
Copy of 劉徽的「割圓術」
miao
圆之吻（Apollonius circles）
Discover Topics
Pythagoras or Pythagorean Theorem
Logarithm
Matrices
Dilation
Vectors 3D (Three-Dimensional)