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What definition of the concept of tangent? For what reasons? (Quelle définition du concept de tangente? Pour quelles raisons?) (French)
Repères IREM 101, 5-32 (2015).
Classification: G70 I40 A30
1
Can we really rigorously manipulate Leibniz’s notations? (Peut-on manipuler les notations de Leibniz en toute rigueur?) (French)
Repères IREM 95, 23-47 (2014).
Classification: I40
2
Boxes that float and boxes that go under, following an idea de Y. Chevallard. (Boîtes qui flottent, boîtes qui coulent, d’après l’idée de Y. Chevallard.) (French)
Losanges, No. 14, 26-31 (2011).
Classification: M13 M53 I23
3
The continuous fractions, the real numbers and the concept of limit (pt. 2). (Les fractions continues au service des nombres réels et de la notion de limite.) (French)
Losanges, No. 9, 10-19 (2010).
Classification: F50 F60
4
Continuous fractions. (Les fractions continues, outil d’approximation.) (French)
Losanges, No. 8, 10-22 (2010).
Classification: F50 I30 M50 M80
5
Problems of enumeration and emergence of first functional models. (Problèmes de dénombrement et émergence de premiers modèles fonctionnels.) (French. English summary)
Rech. Didact. Math. 29, No. 3, 247-303 (2009).
Classification: C33 H23 D23
6
Neglecting terms? Opportunities and challenges. (Négliger des termes? Opportunités et difficultés.) (French)
IREM de Strasbourg (ed.), Regards et perspectives sur l’enseignement de l’analyse. Actes du colloque de Mulhouse 8‒9 mars 2002. (ISBN 2-911446-23-2/pbk). 29-40 (2002).
Classification: I20 I40
7
Omitting terms? Opportunities and difficulties. (Négliger des termes? Opportunités et difficultés.) (French)
Ouvert, No. 107, 25-36 (2003).
Classification: I24 I44 D44
8
The strange behaviour of y$^x$. (Comportement curieux de la touche y$^x$.) (French)
Math. Péd., No. 117, 33-47 (1998).
Classification: E50
9
A heuristic approach to analysis which is helping for an interaction between students and their own intuitions. (French)
Abrantes, Paulo et al., Les interactions dans la classe de mathématiques. ,. 86-95 (1998).
Classification: I34
10
The peculiar behavior of a$^{a^{a^{a^{..}}}}$. (Het merkwaardige gedrag von a$^{a^{a^{a^{..}}}}$.) (Dutch)
Uitwiskeling 13, No. 2, 10-17 (1997).
Classification: I34
11
Duerers Spiel mit dem Schatten. (Jeux d’ombre a la lumiere de Duerer.) (French)
Math. Péd., No. 88, 21-28 (1992).
Classification: G50
12
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