Nearly half the adult population in developing nations lacks a formal bank account and other financial services. Ghana is no exception, having a massive community of unbanked adults and among those countries positioned at the bottom of the spectrum of financial inclusion. The advent of mobile financial services (MFS) claims an alternative mode to…

In this paper, we present an activity to introduce the idea of public-key cryptography and to make pre-service STEM teachers explore fundamental informatics and mathematical concepts and methods. We follow the Theory of Didactical Situations within the Didactical Engineering methodology (both widely used in mathematics education research) to…