1,721,003 research outputs found
Tra italiano e matematica: il ruolo della formulazione sintattica nella comprensione del testo matematico
No full textDa diversi decenni, ricerche ed esperienze, svolte nell’ottica di un rinnovamento dell’educazione linguistica, hanno messo in luce la necessità di un lavoro comune tra insegnanti di lettere e insegnanti di materie scientifiche. Tra le varie discipline, una particolare attenzione è stata rivolta alla matematica, nell’apprendimento della quale la componente linguistica svolge un ruolo fondamentale, documentato da una ormai ricca bibliografia scientifica.
Il lavoro comune tra esperti di didattica dell’italiano e didattica della matematica si è però finora concentrato soprattutto sulla scuola elementare e soffermato quasi esclusivamente su aspetti specifici, quali ad esempio il ruolo della componente lessicale, la relazione tra domanda e contesto, il ruolo della narrazione, il rapporto tra lingua e altri registri di rappresentazione.
Il contributo si propone di fornire dati per mettere in evidenza come, in ambito scolastico, la formulazione macro e microsintattica influisca sulla comprensione a vari livelli del testo matematico – in particolare di esercizi e problemi legati alla valutazione – e sulle prestazioni rispetto all’esercizio o al test somministrato. Questo aspetto non risulta particolarmente approfondito negli studi di ambito didattico, sia matematico, sia linguistico-educativo.
Scopo della ricerca proposta è distinguere difficoltà sintattiche didatticamente motivate da altre non motivate e proporre strumenti per costruire percorsi didattici di lavoro comune tra insegnante di lettere e insegnante di matematica, specialmente nella scuola superiore.
In particolare, il contributo si soffermerà su tre aspetti:
1) l’analisi della formulazione sintattica degli esercizi nei manuali scolastici (in particolare del biennio delle scuole secondarie di secondo grado);
2) l’analisi della formulazione sintattica degli esercizi dell’Esame di Stato (comunemente detto “esame di maturità”) in Italia e delle relative prestazioni in un campione di prove degli ultimi anni;
3) la sperimentazione metodologicamente accurata con studenti di scuole secondarie di primo e di secondo grado italiane mirata a isolare le difficoltà sintattiche e a capire – anche grazie a strumenti di tipo statistico – come gli aspetti sintattici nella formulazione influiscono sulla leggibilità del testo e sui risultati delle prestazioni
Teaching real numbers and continuum in secondary school: an ontosemiotic approach to the investigation of teachers' choices =
No full textIn this paper, we present a case study concerning teaching and learning of real numbers and
continuum in the Italian high school. In the research, secondary school in-service teachers,
after answering a questionnaire designed to investigate their resources, orientations and
goals, have been asked to declare and motivate their didactical choices concerning the
teaching and learning of real numbers and continuum. Data have been analysed within a
framework including OSA. In particular, two goals were: to investigate how far teachers'
resources, goals and orientations affect the process of decision-making and to look for
criteria of didactical suitability used by the teacher to argument in favour of their declared
choices. After discussing the epistemological complexity of these mathematical objects, we
present a case study, in order to make emerge, among other results, the role of OSA in such
a research.En este trabajo se presenta un estudio de caso sobre enseñanza y aprendizaje de los números reales y el continuo en la escuela secundaria italiana. Se aplicó un cuestionario a una muestra de profesores de educación secundaria en servicio diseñado para investigar los enfoques, orientaciones y recursos que caracterizan las elecciones didácticas de los profesores para la enseñanza de los números reales y el continuo. Los datos han sido analizados usando herramientas teóricas del Enfoque Ontosemiótico (EOS). Dos objetivos específicos de la investigación fueron: investigar en qué medida los recursos didácticos, fines y orientaciones afectan al proceso de toma de decisiones, y buscar criterios de idoneidad didáctica usados por los profesores para argumentar a favor de suselecciones didácticas declaradas. Después de discutir la complejidad epistemológica de estos objetos matemáticos presentamos un estudio de caso, con el fin de mostrar, entre otros resultados, el papel del EOS en esta investigació
La Matematica nell'esame di Stato di fine primo ciclo e nella prova INVALSI 2018
No full textIn questo lavoro poniamo l’attenzione sul possibile impatto delle nuove modalità di somministrazione delle prove INVALSI G8 sulla didattica in aula nel primo ciclo e sull’esame di Stato per quanto riguarda la Matematica. Dopo una riflessione sul tema, presentiamo gli obiettivi, la metodologia e i primi risultati di una rilevazione condotta a fine anno scolastico 2017/2018 con un gruppo di insegnanti di Matematica e Scienze nelle regioni Lombardia e Liguria
Digital and traditional mathematical discussions: joining forces to promote inclusion
No full textIn this paper, we present an analysis of the design for the integration between traditional in-person mathematical discussion and digital mathematical discussion. The analysis is conducted through the didactical differentiation model used as an analytical tool to evaluate the potentialities of integrating traditional and digital mathematical discussion in order to foster inclusion. The analysis shows that the integration of digital mathematical discussion with its traditional version can offer an added value in terms of promoting discussion as an inclusive practice with respect to the four variables of the differentiation model
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
A longitudinal analysis of the Italian national standardized mathematics tests
Full text linkThis paper presents a longitudinal analysis of the outcomes of the Italian national standardized mathematics tests. By intertwining quantitative and qualitative methods , we selected and analysed a set of linked questions among the tests administered to the same cohort of students first in grade 6 and then in grade 8. In particular, we focus on poor knowledge students and we argue an example of the analysis of two linked questions about graphical representation of fractions. The comparison between the two questions allows us to interpret some difficulties of students and to expect possible future behaviours
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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