MUTHMA’INNAH, M. Difficulty Learning Mathematics Material for Multiplication Counting Operations in Elementary School. Rangkiang Mathematics Journal, [S. l.], v. 2, n. 2, p. 30–33, 2023. DOI: 10.24036/rmj.v2i2.42. Disponível em: https://math.ppj.unp.ac.id/index.php/RMJ/article/view/42. Acesso em: 21 nov. 2024.