優等生六年級學PreAlgebra, 七年級學代數1，八年級學幾何。特優生這些都自學了一篇，六年級準備MathCount

來源: BeLe 於 2024-06-16 08:19:53 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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