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In this paper we study the levels of anxiety towards mathematics teaching in a group of Spanish students for primary education teaching through the MATAS survey. The data collected in the survey is analyzed to determine if there are significant differences between the levels of anxiety when the sample is differentiated according to three criteria: if they have taken any previous mathematics subject, if they have any previous degree in education and if they have teaching experience in mathematics. As a result, it is obtained that most of the group of students present medium or high levels of anxiety towards the teaching of mathematics and that those who have no teaching experience or no previous degree present significantly higher mean levels of anxiety. [ABSTRACT FROM AUTHOR]

This paper explores the relationship between students' perceptions of the type of teaching they experience in mathematics [more or less student centred] and their reported emotions, self-concept and disposition. It also addresses the question of whether there are differences in this relationship for girls and boys. It uses survey data from almost 300 year 7 Chilean students, clustered in 8 different classrooms. A correlational analysis suggests that there is a positive significant association between how student centred the teaching is perceived to be and students' more positive attitudes. Nevertheless, this effect was independent of sex, suggesting that more student-centred teching do not necessarily offer an advantage for girls, but are positive for both, boys and girls. [ABSTRACT FROM AUTHOR]

This paper describes the design, implementation and results of a formative action with 61 students for primary education teachers, oriented to the development of the competence of analysis of the didactic suitability of educational videos about percentages. The a priori analysis of the video made by the researchers revealed important deficiencies in the different facets of didactic suitability, being especially relevant those detected in the epistemic dimension. Most of the students for teacher made quite relevant global assessments of the didactic suitability (70.49% considered it between low and medium) basing their judgment on the precision or degree of fulfillment of the suitability indicators in the different components. However, although the suggestions for improvement indicated are quite timely, not all students who identify weaknesses in the videos are able to explicitly make changes to the resource. [ABSTRACT FROM AUTHOR]

The definite integral is a central concept in the applications of calculus to experimental sciences and engineering, and consequently, a relevant didactic research topic. This paper analyses the different meanings of the definite integral by applying theoretical tools of the ontosemiotic approach to mathematical knowledge and instruction, particularly, the interpretation of meaning in terms of systems of operational and discursive practices related to the resolution of types of problems and the algebraization levels model of mathematical activity. Types of problem-situations and configurations of practices, objects, and processes are identified that allow us to characterize and articulate the various partial meanings of the definite integral (geometric-intuitive, as a limit of Riemann sums and cumulative function) as well as its extensions to the case of the double integral (as a particular case of the multiple) and the line, from the most intuitive to the most formal. The analysis allows us to identify the generality degrees of the objects of integral calculus and the role of algebra in the characterization of the meanings of the definite integral, which must be considered in the planning and management of the processes of teaching and learning of integral calculus in engineering degrees. [ABSTRACT FROM AUTHOR]

This paper presents the results of a research based on the process of reflection on school mathematics of middle school teacher. For this purpose, a three-component theoretical model was configured, articulated with the Socioepistemological Theory. Specifically, it shows how the process takes place: what and how awareness is acquired, what knowledge is constructed and what is transformed. For the analysis we considered a category of meanings and another on the forms of argumentation related to direct proportionality; both categories allowed us to understand the state of the teacher's knowledge at the beginning and at the end of the ref lective process. Among the results we have that the ref lection of school proportionality gives evidence that the change of relationship to this mathematical knowledge promotes the awareness of responsibility for mathematical education and the development of autonomy over mathematical knowledge (both related to proportionality), two aspects that characterize the professionalization of mathematics teachers. [ABSTRACT FROM AUTHOR]