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Résumé La publication des travaux de Galois dans le Journal de Liouville (1846) a été annoncée lors d’un débat entre les académiciens Libri et Liouville, dès 1843. Plutôt que de restreindre cette publication à une étude de controverse, nous voudrions montrer qu’elle s’inscrit dans un contexte plus large de redéfinition de l’algèbre, dont ce débat est un révélateur. Pour comprendre la redécouverte...
In early algebra students often struggle with equation solving. Modeled on Streefland's studies of students' own productions a prototype pre-algebra learning strand was designed which takes students' informal (arithmetical) strategies as a starting point for solving equations. In order to make available the skills and tools needed for manipulating equations, the students are stimulated and guided...
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