JANASBAY-KIZI, Shabatova Rabiģa. Use of Optional Exercises in Mathematics in Primary Classes. International Journal on Integrated Education, [S. l.], v. 5, n. 1, p. 86–88, 2022. DOI: 10.31149/ijie.v5i1.2618. Disponível em: https://journals.researchparks.org/index.php/IJIE/article/view/2618. Acesso em: 15 nov. 2026.