POWELL, Sarah R.; FUCHS, Lynn S. Early Numerical Competencies and Students with Mathematics Difficulty. Focus on Exceptional Children, [S. l.], v. 44, n. 5, 2012. DOI: 10.17161/foec.v44i5.6686. Disponível em: https://journals.ku.edu/focusXchild/article/view/6686.. Acesso em: 11 may. 2024.