GEORGE, Rosemary Nchelem; IHUNWO, Peace Chituru. Effect of Dienes base ten block manipulative on middle basic pupils’ performance in Mathematics in rivers State, Nigeria. Direct Research Journal of Education and Vocational Studies, [S. l.], v. 7, n. 1, p. 16–26, 2025. Disponível em: https://journals.directresearchpublisher.org/index.php/drjevs/article/view/421. Acesso em: 29 apr. 2026.