Manipulative-based activities and number sense development of Grade 1 learners of Tucanon Elementary School. The International Review of Multidisciplinary Research, [S. l.], v. 1, n. 4, 2026. DOI: 10.5281/zenodo.19953460. Disponível em: https://vertexcorp.org/index.php/irmr/article/view/233. Acesso em: 13 jun. 2026.