Students write to learn. Besides, enculturation the disciplinary discourse happens during writing. Feedback on assignments from students scaffolds students’ writing development and learning paths. However, knowledge about relationship between language, including argumentation in discipline, one hand, content of other, is needed. This article based a socio-cultural approach disciplines, theory f...

Some innovations spring from a flash of genius. But as Peter Drucker points out in this HBR Classic, most result from a conscious, purposeful search for opportunities. For managers seeking innovation, engaging in disciplined work is more important than having an entrepreneurial personality. Writing originally in the May-June 1985 issue, Drucker describes the major sources of opportunities for i...

Despite the evident progress in the evolution of formal methh ods, they are still very diicult to use. One reason is the lack of paradigms explaining how to make a good use of a particular method. We try to explain some of these paradigms in the case of the B method and exemm plify them in the speciication and the implementation of an Automatic Teller machine.