Ideas de los alumnos sobre la digestión : aspectos fisiológicos

Resum

In this article we report the ideas owned by students from different levels (EGB, BUP, Teacher Training College) as well as by some teachers, in relation to certain concepts involved in the processes of digestion and substance absorption. The dificulties observed in the conceptualization of several processes, especially in lower lever students, show the need for a change in the teaching planning.