OSCAR ORLANDO ORTIZ CORREDOR; LADY ALEXANDRA GELVEZ ORTEGA. GEOMETRIC CONCEPTS OF LOCAL CHANGES AND CUMULATIVE EFFECTS IN BASIC SECONDARY EDUCATION FOR GRADES 8° AND 9°. DIALÉCTICA, [S. l.], v. 2, n. 31, 2026. DOI: 10.56219/dialctica.v2i31.6387. Disponível em: https://revistas.upel.edu.ve/index.php/dialectica/article/view/6387. Acesso em: 3 oct. 2026.