https://genesis-aka.net/language/japanese/japanese-it-global/2022/08/17/%e3%80%8cgoogle-classroom%e3%80%8d%e3%80%8118%e3%81%ae%e3%82%a2%e3%83%89%e3%82%aa%e3%83%b3%e3%82%92%e6%8f%90%e4%be%9b%e9%96%8b%e5%a7%8b-%e3%82%b3%e3%83%b3%e3%83%86%e3%83%b3%e3%83%84%e5%88%a9%e7%94%a8/