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Author:
李春培
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GeoGebra
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三位數除以一位數（一）
四邉形 (四年級) 教師版
球體建築師
兩位數加法
兩組對邊相等的四邊形
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二項分布與抽樣 (iPad 適用)
Apollonius Problem 7 CCP power inversion 12
拿破侖定理(內拿破侖)證明三
glt-h02-03-角錐角柱動態展開
Example 6.1
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LCM and GCD
Continuity
Numbers
Histogram
Quadratic Functions