IDENTIFIKASI HAMBATAN BELAJAR MATEMATIKA PADA SISWA KELAS 6 SD NEGERI 1 SELUMBUNG. JPPD [Internet]. 2026 May 17 [cited 2026 Oct. 24];1(02):137-45. Available from: https://journal.lumiverapublishing.org/index.php/jppd/article/view/500