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Although the notion of differential equation is present in fields such as mathematics and engineering , understanding by students and some teachers has been limited due to the algebraic approach that has focused teaching differential equations, neglecting the construction of  the differential equation (DE), which is the foundation to model some physical phenomena. In this paper, we present some difficulties identifiedto build the differential equation that models a problem mixing in a group of 21 students enrolled in a public university the subject of differential equations.

elementos/elementosbogotâa

Planteamiento de una ecuación diferencial lineal de primer orden que modela un problema de mezclas: Una dificultad en la movilización entre registros de representación, lengua natural y algebraico