The mathematical film: Dynamic geometry in the post-War era
Résumé
From the 1950s, the didactic potential of teaching aids was a main topic of interest within the
International Commission for the Study and Improvement of Mathematics Teaching (CIEAEM). In
particular, mathematical films that illustrated geometric properties in a dynamic way or explored
new topics in geometry education were considered promising didactic tools. In this paper, we
reconstruct the former role that mathematical films played in the teaching and learning of geometry.
Therefore, we discuss the ambitions and analyze the output of two successful realizers of
mathematical films in the 1950s, namely Jean-Louis Nicolet (Switzerland) and Trevor Fletcher (UK),
and the role Caleb Gattegno played in valorizing their output.
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