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Introduction to Rectangular Coordinates
Author:
Roger Lui
GeoGebra
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算柱 (兩位數)
【案例】2018年全国1卷理科12题
三位數除以一位數（二）
拼砌四邊形
兩位數加法
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Homework4
第一次任務
軌跡觀察---圓及正三角形上線段中點
test
橢圓包絡線1060406
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Random Variables
Division
Area
Fractions
Symmetry