HASIBUAN, Siti aisyah. MEMBANGUN PERCAYA DIRI SISWA SD DALAM PEMBELAJARAN MATEMATIKA MELALUI PENDEKATAN PROBLEM SOLVING. Journal of Matematics In Teaching and Learning, [S. l.], v. 1, n. 1, p. 22–27, 2022. Disponível em: https://jurnal.stain-madina.ac.id/index.php/matematika/article/view/1045. Acesso em: 9 sep. 2025.