1,720,995 research outputs found
Prompting embodied instrumented covariation with the digital Tracer
No full textThis study explores a learning environment that involves tasks designed by exploiting a digital artifact called digital Tracer. Such an artifact enables an embodied design of tasks that may prompt a covariational perspective on (functional) relationships traditionally taught by adopting a static approach. The paper aims to investigate how peers work together with the digital Tracer (what can be called an intercorporeal functional dynamic system) in order to solve some tasks elaborated with an embodied design. Employing the framework of embodied instrumentation, the preliminary analysis presented in this study examines a group of three university students, one of whom acted as an observer, while solving tasks that required them to follow two given traces (a broken line and a circumference) using the digital Tracer
Matlab LiveScprit for promoting high-level problem solving processes in engineering students
No full textIn this study, we compare engineering students’ problem solving processes when they face linear algebra tasks in a pen and pencil environment and Matlab LiveScript environment. By a qualitative research method, we investigate if and how the devolution of computations to the software allows students to focus on significant aspects of the problem solving process, shifting from the procedures to strategic and communicative aspects. The results suggest that the tool promotes an aware view of the problem solving process at different levels, depending on students’ knowledge and competency
Promoting the production of examples and conjectures in hybrid environments to elicit students' concept image and definition
No full textIn this paper, we aim to investigate the potential of a purposefully designed task proposed in a hybrid environment with Padlet and GeoGebra, to promote students’ production and sharing of personal concept definitions, conjectures, examples and the emergence of instances of students’ concept images. From the analysis of the students’ posts, we derived a complex intertwining between all these elements and a possible tension with the formal definition of diagonal. We also obtained a confirmation of the potentialities of the hybrid environment to favor the participation of all the students in rich exchanges on the mathematical task. We finally argue that the exchanges recorded by the Padlet provide a common basis for the teacher and the students to share and reflect upon during the subsequent classroom discussio
Orchestrating mathematical discussions with and through Padlet
No full textThe role of the teachers is central in orchestrating classroom discussions to support students’ engagement and highlight connections between emerging mathematical ideas. Literature shows many practices that could support teachers in dealing with this role, and some recent studies show that digital tools shape teachers’ practices. In this paper, we discuss an example of a structured educational activity conducted with a shared and collaborative digital platform (Padlet); the aim is to identify the Padlet affordances that may support productive discussion orchestration. In the discussion presented here, Padlet appears to be a valuable tool: students’ posts on Padlet allow the teacher to monitor the different approaches proposed by students to solve a given task and their achievements. Moreover, the possibility of having all students’ posts together permits students and the teacher to recognize similar strategies and connect emerging ideas
A videogame as a tool to orchestrate productive mathematical discussions
No full textWe structure an educational activity with a videogame starting from the hypothesis that technological tools could support in collecting data on students’ achievements and designing mathematical wholeclass discussions. In this paper, we present and discuss an example from our case studies, with the aim of analysing the role played by the videogame in supporting productive discussion concerning relational thinking. We conducted a whole-class discussion, and we noticed that the videogame could be a valuable tool for structuring the discussion. Indeed, the log files allow us to follow students’ achievements and difficulties in solving tasks, and the dedicated web interface permits students to upload their responses and share them immediately
PROCEEDINGS of the Fifth ERME TOPIC CONFERENCE (ETC 5) on Mathematics Education in the Digital Age (MEDA 2018)
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Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Variations on the Author
Get PDF“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
Get PDFWe 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
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