Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Tomoto Takahito and Imai Isao and Horiguchi Tomoya and Hirashima Tsukasa,A Support Environment for Learning of Class Structure by Concept Mapping Using Error-Visualization,Transactions of Japanese Society for Information and Systems in Education,13414135,Japanese Society for Information and Systems in Education,2013,30,1,42-53,https://cir.nii.ac.jp/crid/1390282680490707456,https://doi.org/10.14926/jsise.30.42