Sorto, M. A., Marshall, J. H., Luschei, T. F., & Carnoy, M. (2009). TEACHER KNOWLEDGE AND TEACHING IN PANAMA AND COSTA RICA: A COMPARATIVE STUDY IN PRIMARY AND SECONDARY EDUCATION . Revista Latinoamericana De Investigación En Matemática Educativa, 12(2), 251–290. Recuperado a partir de https://relime.org/index.php/relime/article/view/337