Implementation of playful strategies to improve academic performance in mathematics among sixth-grade students at El Bosque School in the city of San José de Cúcuta. ACTIVIDAD FÍSICA Y DESARROLLO HUMANO, [S. l.], v. 5, n. 1, p. 119–126, 2013. DOI: 10.24054/afdh.v5i1.1694. Disponível em: https://ojs.unipamplona.edu.co/index.php/afdh/article/view/1694. Acesso em: 16 oct. 2025.