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) SUZUKI Masayuki and TANAKA Etsuko and MURAYAMA Kou and ICHIKAWA Shinichi,Classification of Efficient Calculation Problems and the Effect of Instruction Using an Abstract Strategy,Educational technology research,0387-7434,日本教育工学会,2011,34,1-2,75-83,https://cir.nii.ac.jp/crid/1390282680196771712,https://doi.org/10.15077/etr.kj00007561987