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戴選治
GeoGebra
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【案例】2018年全国1卷理科12题
算柱 (兩位數)
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
三位數除以一位數（二）
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task 1
教學－棱柱摺紙樣式
Testing: addition
用方程解周界問題
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Cylinder
Scatter Plot
Complex Numbers
Parallelogram
Median Line