Damanik TAP, Julyanti E, Pasaribu LH. Analysis of the Mathematical Concept Understanding Ability of VII Grade Junior High School Students . EduMatSains [Internet]. 2025Jan.31 [cited 2025Feb.19];9(2):55-. Available from: http://ejournal.uki.ac.id/index.php/edumatsains/article/view/6397