TOSHPULATOVA DURDONA; SULTANOV TURDALI. THE ROLE OF MENTAL ARIFMETICS AND THINKING SKILLS IN MATHEMATICS LESSONS OF PRIMARY SCHOOLS. International Engineering Journal For Research & Development, [S. l.], v. 5, n. 1, p. 5, 2020. DOI: 10.17605/OSF.IO/EU2HP. Disponível em: https://iejrd.com/index.php/ /article/view/146. Acesso em: 6 nov. 2025.