Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) HAMADA Satomi and TAKAOKA Ryo and YOKOYAMA Makoto,An Usefulness Evaluation of Web based Application for Understanding Structure of Geometric Proof in Junior High School,Japan Journal of Educational Technology,13498290,Japan Society for Educational Technology,2018-12-20,42,Suppl.,169-172,https://cir.nii.ac.jp/crid/1390282763080054272,https://doi.org/10.15077/jjet.s42092