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The difficulties experienced by schoolchildren in solving problems concerned with the determination and graphic representation of solids were examined within the framework of an empirical research project. The form and evolution of the project and possible conclusions will be described in the...
It is shown that the historical role of the mean value lemma on derivatives is usually overestimated. In particular, the values of c where f’(c) equals the slope of the chord have been considered inessential until recently. Moreover, the lemma can be replaced by equivalent ones in the calculus...
Two approaches to the empirical analysis of mathematics teaching were compared, viz. Jörg Voigt’s analysis of student-teacher -interaction and Rainer Bromme and Heinz Steinbring’s analysis of the epistemological structure of mathematical knowledge. The principal aim of the study is to show the...
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