2020-5-13 - @Rintan@mstdn.y-zu.org님의 게시물

2020-5-13

13:34:24 Rintan @Rintan@mstdn.y-zu.org

人間の集中力はせいぜい45分と考えると、授業が90分の場合は半分にするべき

10:04:08 Rintan @Rintan@mstdn.y-zu.org

2020-05-12 13:45:22

님의 게시물 mizukmb@mstdn.nere9.help

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