Różne sposoby rozumienia pojęcia parametru przez uczniów gimnazjum w toku badań długoterminowych w trakcie zintegrowanej nauki matematyki i informatyki
The object of interest in traditional mathematics teaching are first of all contents connected with concepts like triangles, numbers, vectors etc. and their properties. A teacher focuses pupils' attention mainly on these concepts. Letters (variables) are simply used (Konior, 2002) and treated as if they were already known by pupils and represented the part of alphabet earlier known to them. It is clear that the assumption that pupils will use mathematical alphabet symbols in a conscious manner is...