Llanos, V. C., & Otero, M. R. (2015). The impact of the didactic functions topogénesis , mesogénesis and cronogénesis in a research and study paths ( RSP ): the case of the polynomial functions of the second degree. Revista Latinoamericana de Investigación en Matemática Educativa, 18(2), 245-275. https://doi.org/10.12802/