Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KISHI Shota and UEMATSU Haruko and KATSUDA Hitoshi,Implementation of Tutorials in Geometrical Optics for Ninth Graders,Journal of the Physics Education Society of Japan,03856992,The Physics Education Society of Japan,2015,63,2,92-97,https://cir.nii.ac.jp/crid/1390001204517604864,https://doi.org/10.20653/pesj.63.2_92