We approach a classical Mathematical problem: that of computing the time passed, from a given moment, until the hands of a clock reach certain position. In particular, we focus on the case when the required position is the superposition of both hands. In this paper, we present some examples from classic and nineteenth century texts presenting different contexts where the problem arises as well as different solving methods. In addition, and as a consequence of this analysis, we present some didactical considerations that motivate the use of these resources with prospective teachers.
History of Mathematics; Mathematics Education; Arithmetic; Algebra; Clock problems
