Edukalibre is a project aimed at the promotion of information and communications technology in education. Its main goal is to explore new ways of producing educational materials, based in the practices and procedures observed in the libre (free, open source) software development community. Some of the key aspects being explored are the stress on collaborative development, the interaction with users, and the use of version control systems for documentation, in the context of the educational communities. In the end, the tools and procedures for the creation of educational materials are proposed. Edukalibre is the international project including the partners from universities and educational institutions of Spain, Portugal, Germany, UK, Switherland and Czech Republic. The part of AS Department's work in the Edukalibre consists in the preparing of the educational material on Bayesian Decision Making. The material is prepared under GNU licence and can be potentially used as the courseware content. It includes the theoretical part and the package of interactive examples implemented in Octave (open source clone of MATLAB) as well.