Subkhan A, Utaminingsih S, Khamdun. The Effect of Online Learning, Motivation and Mastery of Social Science Concepts on The Problem Solving Ability of Grade IV Elementary School Students. ICCCM JSSH [Internet]. 2022 Sep. 11 [cited 2024 Nov. 21];1:45-50. Available from: https://ejicccm.com/index.php/icccmjssh/article/view/54