小学生に分数を始めて教えるのって大変だなあ。 https://twitter.com/kouzyt/status/1506904178006065152 March 24, 2022 at 05:02PM



https://twitter.com/kouzyt
小学生に分数を始めて教えるのって大変だなあ。
March 24, 2022 at 05:02PM

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