FONSECA, Itamar dos Santos; OLIVEIRA, Clemilda Sousa. THE USE OF THE HORIZONTAL ABACUS: REFLECTIONS ON TEACHING WITH A CLASS OF THE 5TH YEAR OF THE EARLY YEARS . Seven Editora, [S. l.], p. 1–13, 2025. Disponível em: https://sevenpubl.com.br/editora/article/view/7005. Acesso em: 21 aug. 2025.