Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Okazaki S.,"Development of a Unit based on Food System Theory for the Study of Community in Elementary Schools : The Case of the Fourth Grade Unit on ""Our Prefecture; Growing the Hiroshima-na""",Journal of Japanese Educatinal Research Associaon for the Social Studies,0289856X,Japanese Educational Research Association for the Social Studies,2003,58,0,41-50,https://cir.nii.ac.jp/crid/1390282680922763904,https://doi.org/10.20799/jerasskenkyu.58.0_41