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ON THE DISAPPEARANCE OF MATHEMATICS FROM SOCIETAL PERCEPTION

Starting from the dilemma between the growing societal use of mathematics and the disappearance of mathematics from the attention of the "normal" worker, the paper offers a historical case study of the disappearance of mathematics by analysing the standard procedures of weighing in small and medium businesses. The study shows the growing implementation of mathematics into various workplace tools: The development of artefacts integrates and thus hides mathematical concepts and algorithms from the workers’ perception. It is only in non-routine and „breakdown“ situations that mathematics shows up again and may be (re-)invented to cope with the „new“ situation. Consequences for learning mathematics at the workplace and in the classroom, for the use of information technology and for an appropriate research methodology for mathematics in vocational contexts finalise the paper.