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See detailLa mathématique de la Bible
Fredericq, Léon ULg

in Revue de Belgique (1912), (20), 926-930

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See detailMathématique et Codes secrets
Pays, Isabelle ULg

Scientific conference (1993)

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See detailMathématique, quelle psychologie pour quel enseignement
Beckers, Jacqueline ULg

in Education : tribune libre (1988), 211

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See detailMathématiques convoquées par le registre graphique au sein du cours de physique
Renkens, Céline; Henry, Valérie ULg

in Actes de la CIEAEM 66 (in press)

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See detailMathématiques Élémentaires -- Condensé
Merciadri, Luca ULg

E-print/Working paper (2009)

This document is a kind of Math. formula's form. It is majoritarly coming from a volonty of classifying these last so they are easily accessible. Firstly, this document was redacted in order to be ... [more ▼]

This document is a kind of Math. formula's form. It is majoritarly coming from a volonty of classifying these last so they are easily accessible. Firstly, this document was redacted in order to be prepared to the engineering studies (at ULg). Many sections have been added, and it is equivalent to a first-year Math. course for a scientific (who is not a mathematician). For this reason, the text has not been very developped, so this document is as short (and quick) as possible, with no need to read unnecessary sentences which would slow the reading. Principal sentences have been written, to make links, because Math. is not only formula's: speaking is a very important way to communicate ideas and to link concepts, especially in Sciences. Indeed, it would not suffice to copy formula's to redact a summary. It is important to translate them to French too, to ensure their understanding. The aim of this summary is not to assemble mathematical ``tricks.'' Indeed, it would not suffice to apply these ready-made ``recipes'' to have success with the exercises: it would be so easy, and why would there be Math. teachers? Only few proves will be made, to lighten the document; however, formula's will be admitted. Many different notations will be used for the same idea, in order to give the habit of the reader to use different notations (e.g. the notation used for the transposed of a matrix). This synthesis is not comprehensive, and does not pretend to be rigourous. Only the essential chapters and sections have been kept. When prerequisites are necessary, they are announced, even if it is sometimes not possible to develop points before others, because, on one hand, they sometimes call each other, and, on the other hand, some notions have volontarily not been given (limits computing, in Calculus). Indeed, many points are supposed to be known: this document consists only in a set of reminds! [less ▲]

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See detailMathieu Crickboom en Espagne
Pirenne, Christophe ULg

Conference (2000, August 25)

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See detailMaths & Manips
Henry, Valérie ULg; Guissard, Marie-France; Lambrecht, Pauline

in Losanges (2010), 7

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See detailMaths & Manips pour le primaire. Favoriser l'apprentissage des grandeurs par des manipulations
Guissard, Marie-France; Henry, Valérie ULg; Vansimpsen, Sylvie et al

Conference (2012, October)

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See detailMaths et manips : introduction de manipulations dans les classes pour favoriser la construction des apprentissages
Henry, Valérie ULg; Lambrecht, Pauline

in Actes du XXXVIIIè colloque de la COPIRELEM (2012)

Cet atelier rend compte d’une recherche actuellement en cours au CREM . Les Math & Manips sont des activités conçues pour provoquer chez les élèves des conflits entre ce qu’ils pensent et ce qu’ils ... [more ▼]

Cet atelier rend compte d’une recherche actuellement en cours au CREM . Les Math & Manips sont des activités conçues pour provoquer chez les élèves des conflits entre ce qu’ils pensent et ce qu’ils découvrent lors des expérimentations. Nous proposons trois séquences d'apprentissage intégrant des manipulations, et destinées à diverses tranches d'âge de l'enseignement élémentaire voire du début du collège. Pour les enfants de 6 à 8 ans, nous travaillons les grandeurs (longueurs, masses, capacités et aires) avec pour objectif de dégager des méthodes efficaces de comparaison sans unité conventionnelle de référence. Pour les élèves de 8 à 10 ans, il s'agit de faire découvrir l'utilité d'un étalon conventionnel en travaillant les capacités. Pour ceux de 10 à 12 ans, nous proposons une séquence visant l'appropriation de la notion de volume. La discussion avec les participants s’oriente principalement sur les concepts mis en place au cours de chaque activité. [less ▲]

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See detailLa matière des mots: Paroles de Dick Annegarn
Demoulin, Laurent ULg

E-print/Working paper (2011)

Comme Dick Annegarn l'indique lui-même, il ne faut pas confondre poésie et texte de chanson. C'est sur cette base qu'il faut lire les textes de Dick Annegarn. Apparaissent alors l'originalité des ... [more ▼]

Comme Dick Annegarn l'indique lui-même, il ne faut pas confondre poésie et texte de chanson. C'est sur cette base qu'il faut lire les textes de Dick Annegarn. Apparaissent alors l'originalité des métaplasmes qui traversent ses "paroles" et la richesse des thèmes qu'il aborde. [less ▲]

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See detailLa matière en suspension de la couche de surface du plateau continental nord-ouest européen. I. Distribution spatiale de la biomasse et du rapport 13C/12C
Dauby, Patrick ULg; Mosora, Fiorentina; Frankignoulle, Michel et al

in Bulletin de la Société Royale des Sciences de Liège (1992), 61

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See detailLa matière en suspension de la couche de surface du plateau continental nord-ouest européen. II. Teneur en métaux lourds et transfert dans la chaîne trophique
Bouquegneau, Jean-Marie ULg; Gobert, Sylvie ULg; Frankignoulle, Michel et al

in Bulletin de la Société Royale des Sciences de Liège (1992), 61

Samples of suspended matter (MS) from the North Sea have been analysed for its heavy metal content. Unexpected high levels of copper have been recorded. The Scheldt Estuary reveals to be an important ... [more ▼]

Samples of suspended matter (MS) from the North Sea have been analysed for its heavy metal content. Unexpected high levels of copper have been recorded. The Scheldt Estuary reveals to be an important source of zinc, lead and cadmium for the sea. The transfer of metals from the MS to mussels is low. [less ▲]

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See detailMatière médicale ou doxographie ? Révision de PSI inv. 3011 (MP3 2388)
Marganne, Marie-Hélène ULg

in Roselli, Amneris; Boudon-Millot, Véronique; Garzya, Antonio (Eds.) et al Histoire de la tradition et édition des médecins grecs. Actes du VIe Colloque international Paris, 12-14 avril 2008 (2010)

The Greek literary papyrus PSI inv. 3011 (MP3 2388, A.D. IIIin., unknown provenance) contains the opinions of four medical authorities (Antoninos of Cos, Niceratos of Athens, a Thessalian and a Milesian ... [more ▼]

The Greek literary papyrus PSI inv. 3011 (MP3 2388, A.D. IIIin., unknown provenance) contains the opinions of four medical authorities (Antoninos of Cos, Niceratos of Athens, a Thessalian and a Milesian names of which are lost) about several medicinal products; without mentioning the authors, Dioscorides (A.D. I) quotes these fragments in his De materia medica I 73, 77, 79, 81. [less ▲]

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See detailLes matières colorantes au début du Paléolithique supérieur
Salomon, Hélène ULg; Vignaud, Colette; Coquinot, Yvan et al

in Techné (2008)

A lot of settlements, some of which were occupied as long as 300 000 years ago, yielded small quantities of colouring matter. These quantities increased as time went by and as the palette of colours ... [more ▼]

A lot of settlements, some of which were occupied as long as 300 000 years ago, yielded small quantities of colouring matter. These quantities increased as time went by and as the palette of colours diversified, to reach a remarkable climax during the Upper Palaeolithic. Yet colouring matter has been widely ignored, notwithstanding the great potential information they contain about the technical knowledge, the cognitive capacities, the socio-cultural organisation of prehistoric societies and more generally about aesthetic and symbolic conceptions or  even language. The cave of Chauvet (Ardèche, France) is the most ancient testimony of cave drawing in Europe, with representations whose radiocarbon dating by AMS is 31 000 B.P. The origins of this form of art, which already evidences a perfect graphic mastery, are unknown and cannot be found in the previous periods. We thus have to search for clues of these artistic preoccupations in the colouring matter remains of more ancient cultures. But the use of colouring matter is far from limited to the production of parietal art, that was probably an exception among a large scope of more domestic uses, so far very little studied. We studied then a collection coming from the Chatelperronian layers in the “Grotte du Renne” (Arcy-sur-Cure, France), which was excavated in the 60’ by André Leroi-Gourhan. It is a very rich collection of pigments with various shades, which were systematically collected during the excavation. The ultimate purpose is to reconstitute the gestures that enabled the last Neanderthals in Europe to transform the colouring, abrasive, drying and prophylactic properties of these materials. This methodology also proposes to shed some light on their domestic and symbolic utilisations and to evidence the «chaînes opératoires» in the industry of colouring matter; and thus define the roles and the statutes of these materials in the societies of the Early Upper Palaeolithic period. [less ▲]

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See detailLes matières colorantes au début du Paléolithique supérieur : sources, transformations et fonctions
Salomon, Hélène ULg

Doctoral thesis (2009)

Abstract : Despite an increasing number of studies, colouring materials are still poorly understood among excavation remains. Their attraction lies in their capacity to bring to light diverse and complex ... [more ▼]

Abstract : Despite an increasing number of studies, colouring materials are still poorly understood among excavation remains. Their attraction lies in their capacity to bring to light diverse and complex skills, but also in their intense colouring power and their contrasting colours : red and black, which still possess a symbolic value. These highly symbolic materials may, therefore, highlight the “conceptual” practices of prehistoric men and give access to their symbolic world and thought. In such a particular context as the transition between the Middle and the Upper Palaeolithic, these remains, which are very abundant in most excavations, offer the possibility, through analysis, to get an exceptional insight into the way of life of the last Neanderthals. The Châtelperronian site of the “Grotte du Renne”, in Arcy-sur-Cure (Yonne), is a landmark. It was excavated beween 1949 and 1963 by André Leroi-Gourhan : Numerous colouring materials were discovered there, and Leroi-Gourhan developed theories about their transformation and uses which so far have not been tested, and have remained unchallenged.Since their discovery, the assumption is that those minerals were heated in a controlled way, in order to modify their colour. It is indeed well-known that heat transforms yellow materials (iron hydroxides) in orange, red or purple materials (iron oxides). From this hypothesis originates the theory according to which Neanderthals exploited colouring materials as pigments for symbolic or even aesthetic purposes. But the theory has so far never been proved true. Our study combines several sets of data, obtained from different methods. Physico-chemical and petrological analyses were carried out on the colouring materials. These data were related to their location on the site, in association with exceptionally well preserved “hut” structures. Furthermore, a series of experimentations, aimed to characterize powders obtained via different methods (grinding and crushing on the one hand, abrasion on the other hand). The comparison of all these data enabled us to identify the various technical choices which informed the supply in colouring minerals in all the Châtelperronian levels of the Grotte du Renne. It was thus possible to demonstrate that none of these materials, either red or black, was heated before being used, contrary to what had been assumed so far. The supply in colouring materials was as carefully organised as for other materials (flint, for example) ; they were collected in geological formations occasionally showing on the surface, at more than 10 km from the cave. The exploitation of these geological sites did not vary during the whole Châtelperronian period, and privileged materials which can easily be ground into powder. Part of their supply was ground coarsely in order to cover large surface areas (soils or hides) as preservative or to clean them up. The remaining materials were destined to more meticulous activities, which required a fine, regular, and highly-colouring powder. In this latter case, the Neanderthals of the Grotte du Renne used those products when working on bone materials (bone or mammoth ivory), and used them also for their sheer colour. The set of colouring minerals from the Grotte du Renne reveals Neanderthals’ in-depth knowledge of materials ; they understood perfectly well their properties and qualities, and used them extensively, so that the Châtelperronian site must have been a literally dazzling sight, all red and black. The “chaîne opératoire” which transpires from our analysis shows very sophisticated techniques, and an advanced “technological” knowledge. They are witness to surprising capacities and a highly-evolved pattern of thought. [less ▲]

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See detailLes matières colorantes en contexte Solutréen : Combe Saunière (Dordogne), Fressignes (Indre) et Les Maîtreaux (Indre-et-Loire)
Salomon, Hélène ULg; Vignaud, Colette; Aubry, Thierry et al

in Actes du Colloque : Le Solutréen... 40 ans après la publication du Smith’66 (2013)

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See detailLes matières premières lithiques
Bouzouggar, Abdeljalil; Mohib, Abderrahim; Miller, Rebecca ULg et al

in Otte, Marcel; Bouzouggar, Abdeljalil; Kozlowski, Janusz (Eds.) La Préhistoire de Tanger (Maroc) (2004)

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