詳しくは、こちら https://www2.osaka-c.ed.jp/ibaraki-y/%E4%BB%A4%E5%92%8C4%E5%B9%B4%E5%BA%A6%E5%B9%B4%E9%96%93%E8%A1%8C%E4%BA%8B%E4%BA%88%E5%AE%9A.pdf
