Search for: [Abstract = "Its foundations were laid by the American psychologist and education ist J. Dewey, who also defined the structural model of a problem lesson, discerning its five basic links. They are\: thefacing of some difficulty of either a theoretical or practical nature by a pupil \(i. e. the creation of a problem situation\), the realization of what this difficulty consists of \(the problem formulation\), the search for its solution \(the framing of hypotheses\), the coming to conclusions, the checking of results, their arrangement and their usage for new situations."]