The main goal of our studies was eliciting the opinion of graduates and students of the last year of Master studies on the course for teachers of mathematics at the Pedagogical University of Cracow. The research method ...

In this article we present some didactic ideas of introducing the absolute value of a real number by means of functional equations and an inequality. The basic properties of the absolute value of a real number are written ...

The lattice sum $S_2$ for the square array conditionally converges. Having used physical arguments, Rayleigh chose an order of summation in such a way that $S_2$ = π. The Eisenstein summation method applied to $S_2$ ...

In this paper we present the results of our research carried out among the students of the first, second and third years of mathematical studies in the years 2003-2006. The research was focused on the diffi- culties ...