Laura Branchetti, Teaching and Learning Mathematics
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Isonomia – Epistemologica Volume 7 TEACHING AND LEARNING MATHEMATICS SOME PAST AND CURRENT APPROACHES TO MATHEMATICS EDUCATION Volume 1 Il realismo scientifico di Evandro Agazzi Mario Alai (ed.) Volume 2 Complessità e riduzionismo Vincenzo Fano, Enrico Giannetto, Giulia Giannini, Pierluigi Graziani (eds.) Volume 3 Oltre la fisica normale Isabella Tassani (ed.) Volume 4 Mettere a fuoco il mondo Elena Casetta, Valeria Giardino (eds.) Volume 5 Metaphor and Argumentation Francesca Ervas, Massimo Sangoi (eds.) Volume 6 Forecasting the Future Stefano Bordoni, Sara Matera (eds.) Volume 7 Teaching and Learning Mathematics Laura Branchetti (ed.) ISONOMIA - Epistemologica Series Editor Gino Tarozzi [email protected] TEACHING AND LEARNING MATHEMATICS SOME PAST AND CURRENT APPROACHES TO MATHEMATICS EDUCATION Edited by Laura Branchetti © ISONOMIA – Epistemologica ISSN 2037-4348 Scientific director: Gino Tarozzi Editor in chief: Pierluigi Graziani Department of Foundation of Sciences P.za della Repubblica, 13 – 61029 Urbino (PU) http://isonomia.uniurb.it/ Design by [email protected] All rights reserved. No part of this publication may be reproduced, stored in a re- trieval system or transmitted in any form, or by any means, electronic, mechanical, photocopying, recording or otherwise without prior permission, in writing, from the publisher. Cover image by Antonello Ghezzi Table of contents LAURA BRANCHETTI, Some Past and Current Approaches to Mathematics Education ............................ 7 GIORGIO BOLONDI, Epistemology and Didactics in Federigo Enriques ............................................... 21 MARCO PANZA, ANDREA SERENI Platonism and Nominalism in Philosophy of Mathematics ................................... 35 JEAN DHOMBRES, A Debate on the Long Term and Reactions in Mathematics Teaching. Is Computation Just a Technique or Can it Be a Way to Learn Mathematics? .... 57 UBIRATAN D’AMBROSIO, Mathematics and Education: Endeavors for Survival ........................................... 77 RAYMOND DUVAL, Les Theories Cognitives en Didactique des Mathematiques: Lesquelles et Pourquoi? ......................................................................................... 97 LUIS RADFORD, The Epistemological Foundations of the Theory of Objectification .................... 127 BRUNO D’AMORE, Saber, Conocer, Labor en Didáctica de la Matemática: una Contribución a la Teoría de la Objetivación ................................................ 151 ANNA SFARD, After the Fall of the Babel Tower: The Predicament of the Researcher in the Field of Mathematics Education ...... 173 Some Past and Current Approaches to Mathematics Education Laura Branchetti University of Palermo [email protected] [...] On fait la science avec des faits comme une maison avec des pierres; mais une accumulation de faits n’est pas plus une science qu’un tas de pierres n’est une maison. [(...) Science is built up of facts, as a house of stones. But a collection of facts is no more a science than a heap of stones is a house.] Henri Poincaré (1908), La Science et l’Hypothèse. 1. Some current challenges of mathematics education Mathematics is considered an undeniable base for the education of young people, and a source of fundamental knowledge for contemporary and future citizens. Mathematics education has attracted the attention of public opinion and policy makers in EU, so much so that “competence in mathematics has been identified at EU level as one of the key competences for personal fulfil- ment, active citizenship, social inclusion and employability in the knowledge society of the 21st century”1. This growing attention to the spread of mathe- matical skills is not restricted to Europe. It is in fact a worldwide trend, as 1 European Commission/EACEA/Eurydice (2011). Laura Branchetti, “Some Past and Current Approaches to Mathematics Education” in Laura Branchetti, Teaching and Learning Mathematics. Some Past and Current Approaches to Mathematics Education, pp. 7-19. © 2015 Isonomia, On-line Journal of Philosophy — Epistemologica — ISSN 2037-4348 University of Urbino Carlo Bo http://isonomia.uniurb.it/epistemologica 8 Teaching and Learning Mathematics shown by the increasing number of international reports on education, such as the OECD reports on PISA assessment results2. As this report underlines, “Proficiency in mathematics is a strong predictor of positive outcomes for young adults, influencing their ability to participate in post-secondary educa- tion and their expected future earnings”3. So today mathematics education arouses the interest of mathematicians, teachers, philosophers, pedagogists, psychologists, policy makers, and entre- preneurs. The current debate on mathematics education is vivid and multi- faceted, but the socio-economic aspects of mathematics education are often emphasized over other no less important ones. Mathematical competence, problem solving, mathematical modeling skills for developing the most com- petitive technologies for industry, mathematical skills in everyday life, and computational thinking have become keywords in slogans of political sched- ules and international assessments4. As we can read above the entrance of the Wiener Secession building, Der Zeit ihre Kunst, der Kunst ihre Freiheit (“To every age its art. To art its free- dom”). The prevailing attention to mathematics in function of its utility in professional performance and technology is a sort of monument to our age. Recommendations about the formative role of a mathematics for thinking of- ten fall back into discourses that mirror the main trends of our society5. But, just like Vienna, with its rich architectural heritage, represents several periods and styles, so has mathematics education undergone many metamorphoses, changing issues, topics, methods and aims, so that today the field is charac- terized by a great variety of styles. Thus, looking into the past or towards the future, other social issues concerning mathematics education and new chal- lenges are brought into light. We are also led to recognize some surprising resemblances between the approaches in different historical periods and, mu- tatis mutandis, common structures and similar concerns6. 2 OECD (2014). 3 OECD (2014: 6). 4 OECD (2014); European Commission/EACEA/Eurydice (2012). 5 McBride (1994); Ernest, Greer & Sriraman (2009). 6 For a complete work on the history of mathematics education, the handbook edited by Schu- bring (2014) is recommended. BRANCHETTI, Some Past and Current Approaches to Mathematics Education 9 2. Many facets of mathematics as a formative discipline In order to broaden the horizons of this topic, let us consider, through the dicta of some distinguished scholars of the past, some of the possible reasons why mathematics proves invaluable in intellectual development. Over the entrance to Plato’s Academy was carved one of the most famous mottos of the ancient world: Ἀγεωμέτρητος μηδεὶς εἰσίτω (“Let no one who is ignorant of geometry enter”). Roger Bacon (1214-1294), Franciscan friar, philosopher and scientist, wrote: “Neglect of mathematics works injury to all knowledge, since he who is ignorant of it cannot know the other sciences or the things of the world”7. Galileo Galilei (1564-1642), in turn, has intrigued generations with his statement: “[The universe] cannot be read until we have learnt the language and become familiar with the characters in which it is written. It is written in mathematical language, and the letters are triangles, circles and other geomet- rical figures, without which means it is humanly impossible to comprehend a single word”8. In this respect, learning mathematics is like learning the secret language of Nature. In the words of John Locke (1632-1704): “I have mentioned mathematics as a way to settle in the mind a habit of reasoning closely and in train”9. “The highest category of imaginative intellect is always eminently math- ematics”. Is this a claim from a famous mathematician? Not at all. It was, instead, the opinion of Edgar Allan Poe (1809-1849), vanguard of the Gothic tradition in literature and inventor of more than one literary genre10. Bruno D’Amore, editor and author of Matematica, stupore e poesia (2012) and Arte e Matematica. Metafore, analogie, rappresentazioni, identità tra due mondi possibili (2015), stresses the profound relationship between mathematics, other languages and forms of culture which have more tradi- tionally been considered as pertaining to the humanities. On closer view, some of these statements, even if to a lesser extent, are still appropriate now. Several other reasons to teach mathematics, not necessarily good or well- founded, arise when the issue of mathematics education is faced by represent- atives of institutions in practice (Niss, 1996). Many beliefs and “impersonal societal forces” (ibidem), that make vague and fuzzy the goals of mathematics education, affect decisions and teaching strategies. 7 Kline (1969: 1). 8 Galilei (1623: 16); English translation by the author. 9 Locke (1706). 10 Bagni (2000). 10 Teaching and Learning Mathematics Niss (1996) listed some of these reasons, highlighting the difference be- tween reasons and goals. He grouped the reasons in three macrocategories: technological and socioeconomical development, society’s development and individual formation to cope with everydaylife and to prepare for future ca- reer. The second category is described as more aleatory and susceptible of in- terpretations. For instance “during the last two couple of centuries, societies have