著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) TAJIKA H.,Effects- of self-expianation as a' metacognitive strategy for solving mathematical word r problem,Jap. PsychoL Res,,,2007,49,,222-233,https://cir.nii.ac.jp/crid/1574231874058061568,