The Effect of Using Concrete-Representational-Abstract Sequence in Teaching the Perimeter of Geometric Shapes for Students with Learning Disabilities. International Journal of Education in Mathematics, Science and Technology, [S. l.], v. 10, n. 2, p. 477–493, 2022. DOI: 10.46328/ijemst.2403. Disponível em: https://ijemst.com/index.php/ijemst/article/view/534. Acesso em: 7 mar. 2026.