Wykonano w ramach RPBP III.30.V.0The present paper is the outcome of investigations and theoretical analysts carried out for several years, aiming at an answer to the following questions: - what should the fund of the mathematics teacher's knowledge look like, within what scope and in what way should we convey this knowledge to him? In the commencing part of the paper, we analyze critically the existing system of educating teachers of mathematics; later, we present a proposal of a structure of five-year master's studies preparing the graduates for work in the profession of a mathematics teacher. Basing ourselves on the evolved criteria of choice of mathematical contents which should be considered indispensable in educating the teach...