Barojas Gómez, A. and Garnica Dovala, I. 2017. Comprehension of notions of the decimal metric system measured by the LSM in classroom of deaf [17-21]: case study. Revista Latinoamericana de Investigación en Matemática Educativa. 20, 3 (Nov. 2017), 317–344. DOI:https://doi.org/10.12802/relime.17.2033.