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李洲意
Author:
Lee Chew Yee
GeoGebra
New Resources
四邉形 (四年級) 教師版
近似值：有效數字
錐體建築師
兩位數加法
三位數除以一位數（二）
Discover Resources
BMIBMI
Bricks
Comparing_fraction
矮額 太空喔
百分數及其應用
Discover Topics
Trigonometry
Linear Programming or Linear Optimization
Vectors 2D (Two-Dimensional)
Linear Equations
Arithmetic Mean