AYU SEPVINA; JULI YANTI HARAHAP. Efforts to Improve the Ability of Mastering the Concept of Number Using Number Bag Media in Children Aged 4–5 Years in PAUD Kita Jaya Beach District is a Mirror for 2021/2022 Academic Year. International Journal of Educational Research Excellence (IJERE), [S. l.], v. 1, n. 2, p. 179–183, 2022. DOI: 10.55299/ijere.v1i2.210. Disponível em: https://ejournal.ipinternasional.com/index.php/ijere/article/view/210. Acesso em: 17 may. 2024.