Palabras claves: Aprendizaje matem?tico, Concrete phase, DESTREZAS, didactic strategy, Estrategia did?ctica, Fase concreta, Fase gr?fica, Fase simb?lica, graphic phase, Mathematical learning, Skills, Symbolic phase
Autores: Andrea Marisol Garc?a Paida, Marcos Manuel Ibarra N??ez, Vilma Morelia Torres Altamirano