On the learning of numbers through language Aleksandra Urbańska — 2004 Didactica Mathematicae The article contains no abstract
Number conservation by children leaving the kindergarten class Aleksandra Urbańska — 1989 Didactica Mathematicae The article contains no abstract
Epistemological triangle in research on creation of mathematical knowledge Edyta Jagoda; Marta Pytlak; Ewa Swoboda; Stefan Turnau; Aleksandra Urbańska — 2004 Didactica Mathematicae The article contains no abstract