tumblr via “ma3104: mastoybox: gearmac: miwarin: kennak: “私が教員をはじめた頃,クラスのなかに分数計算ができない生徒が何人かいた. そこで分数の計算の手続…” https://t.co/pfazSkR9VT



from Twitter https://twitter.com/itarunozaki

October 01, 2018 at 04:58PM
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