Lizah R, Asari S, Alfiansyah I. Development Of Teaching Materials In Mathematics Lessons In Semester Ii In Class IV Students Of Elementary School. UMGESHIC [Internet]. 2021 Dec. 21 [cited 2025 May 24];1(2):233-8. Available from: https://journal.umg.ac.id/index.php/umgeshic/article/view/3385