Lifelong learning and diverse technical information are challenges for designing curricula. The Finnish National Defence University (NDU) provides undergraduate- and graduate-level courses in academic and military disciplines according to the Bologna process. Technology is one of the major learning lines at the NDU, but basic scientific education…

The author became aware that there are hundreds of retired teachers in the community who want to continue to learn, or at least to have their intellect stimulated. Some join clubs or read books or do crosswords or even surf the net when they retire, but these folks wanted to be stimulated with some mathematics. The author was initially surprised…