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Sudbury Valley school.ppt
by day228 葉天喜 - Kamis, 8 November 2012, 08:17
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Sudbury Valley school.pptSudbury Valley school.ppt

美國自主學習的典範之一：瑟谷學校

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[ Mengubah: Kamis, 8 November 2012, 08:17 ]
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