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equations of circle 2
Author:
puikam2012
GeoGebra
GeoGebra
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兩位數加法
異分母分數減法
三位數除以一位數（二）
兩位數除以一位數（一）
画直线等分三角形的面积
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基本三角函數
Triangle 02
百葉窗2
二年級_柱體的觀察
GGB新手季作业汇总
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Translation
Matrices
Constructions
Bar Chart or Bar Graph
Similar Triangles