Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) 日高 茂暢,A Survey of Digital Device Use and Problems at Home Learning in Elementary School : Results before the 2020 COVID-19 Crisis,佐賀大学教育実践研究,2189065X,佐賀大学教育学部附属教育実践総合センター,2021-03,39,,93-103,https://cir.nii.ac.jp/crid/1390009224888976256,https://doi.org/10.34551/00022962