Student-centred instruction and learning processes in physics     

Dr. Manuela Welzel 《Research in Science Education》1997,27(3):383-394

During the 1970s, student-centred instruction—that is, “play orientation in physics education” (Spielorientierter Unterricht)—was at the centre of curriculum development at the Institute of Physics Education in Bremen. During the past decade, we investigated this kind of instruction with a particular focus on students' learning processes using a situated cognition perspective. Our research group at the Institute conducted several empirical studies of physics learning for different age groups. The aim of these case studies was to construct detailed understandings of how individual learning processes unfold. On the basis of these studies, we attempt to design physics lessons more effectively than they have been in the past. This paper exemplifies our approach providing information about the theoretical and methodological frameworks, the main outcomes of our studies; and reflections about the possibilities for “more effective” student-centred instruction.  相似文献   

Preschoolers' Communicative Functions During Shared Book Reading With Mothers and Fathers     

Chiara Barachetti  Manuela Lavelli 《Early education and development》2013,24(4):595-613

Research Findings: This study examined whether the communicative behaviors of preschoolers during shared-reading interactions differ according to child age or parent gender. Twenty Italian preschoolers (from 3.1 to 5.11 years) were observed during book reading with each parent separately. Communicative behaviors were analyzed according to the speech act theory. The findings showed that older children produced significantly more requests with fathers than with mothers but significantly more assertions with mothers than with fathers. Sequential analysis showed that only the fathers' reading utterances were significantly followed by older children's requests. These results suggest that older children adjusted their communicative functions to elicit richer conversations from their fathers. Practice or Policy: These findings have implications for the assessment and support of preschoolers' conversational skills.  相似文献   

Parental Behavior,Cognitive Appraisal,and Motivation in Young Athletes     

A. Rui Gomes  A. Manuela Gonçalves  Olga Dias  Catarina Morais 《Research quarterly for exercise and sport》2019,90(1):80-94

Purpose: This study tested two hypotheses relating young athletes’ sports motivations to parental behaviors and cognitive appraisal: (1) young athletes’ motivation in sports is related to their parents’ behavior; and (2) this relationship is mediated by cognitive appraisal, even after controlling for competitive level and sports records. Method: This cross-sectional study included 673 young athletes and it measured the athletes’ perceptions of parental behaviors, cognitive appraisal, and sports motivation. Results: Structural equation modeling confirmed Hypothesis 1–the mother’s behaviors accounted for 15 to 16% of the variance in sports motivation, and the father’s behaviors accounted for 12 to 21% of the variance. The correlation patterns differed according to whether the athletes were evaluating the mother’s or father’s behaviors. Hypothesis 2 also was confirmed, for cognitive appraisal partially mediated the relationship between the perception of parental behaviors and sports motivation (34% of the variance was accounted for by the perception of the mother’s behavior; 30% by the father’s). The mediating model did not vary with competitive level or sports records. Conclusion: Parental behaviors and cognitive appraisal need to be taken into account to understand young athletes’ sports motivations.  相似文献   

Writing practices in Spanish universities / Las prácticas escritas en la universidad española     

Manuela Álvarez 《Cultura y Educación》2015,27(3):594-628

Abstract

This article examines the different writing practices carried out in Spanish universities and the methodology used to promote and teach the development of writing competences. The data in this study pertain to nine Spanish universities, 280 teachers and 1,044 undergraduate students from these universities. The data also refer to student and faculty perceptions of the importance attached to the writing process, the amount of time spent on it and the dimensions or aspects of the competence they consider the most important. Furthermore, the article examines the writing practices proposed by the teachers as well as the ones identified by and assigned to the students. On some of the variables, the results suggest opposing perceptions between the two groups and at the same time highlight differences depending on the fields of knowledge. This sheds light on different ways to include the writing process in university education.  相似文献   

Can LEDs help with art conservation? – Impact of different light spectra on paint pigment degradation     

Manuela Lunz  Elise Talgorn  Jannie Baken  Wiebe Wagemans  Dirk Veldman 《文物保护研究》2017,62(5):294-303

The impact of the spectral composition of light on the discoloration of paint pigments has been investigated for the case of lead chromate sulfate, an unstable yellow pigment used by Vincent van Gogh and other painters. With LEDification, museum lighting is moving from using halogen to LED lamps. LED light sources have a significantly different spectral composition than halogen lamps. To understand the impact of these differences on pigment stability, the wavelength dependence of pigment discoloration was determined. Contrary to the expectation that lower wavelength photons induce more damage than higher wavelength ones, UV (394?nm), blue, and cyan light all lead to similar levels of discoloration of a pigment for the same level of radiant power. By understanding this wavelength dependence, it becomes possible to create white light LED lamps with a spectral composition tuned to minimize the degradation effect. An existing LED solution with a modified emission indeed resulted in 30% less color change in the experiment than halogen. Furthermore, a method is proposed to optimize the LED spectra by tuning to the properties of each specific artifact. Simulations show that this can reduce the damage of the light source by 45% in specific cases.  相似文献   

Micro-political practices in higher education: a challenge to excellence as a rationalising myth?     

Pat O’Connor  Estrella Montez López  Clare O’ Hagan  Andrea Wolffram  Manuela Aye  Valentina Chizzola 《Critical Studies in Education》2020,61(2):195-211

ABSTRACT

Excellence has become a ‘hoorah’ word which is widely used in higher education institutions to legitimate practices related to the recruitment/progression of staff. It can be seen as reflecting an institutionalised belief that such evaluative processes are unaffected by the social characteristics of those who work in them or their relationships with each other. Such views have been challenged by gender theorists and by those researching informal power in state structures. The purpose of this article is to raise the possibility that excellence is an ‘idealised cultural construct’ and a ‘rationalising myth’. Drawing on data from qualitative interviews with 67 men and women, who were candidates or evaluators in recruitment/progression processes in five higher educational institutions (in Ireland, Turkey, Bulgaria, Germany and Italy), it conceptualises and illustrates masculinist, relational and ‘local fit’ micro-political practices that are seen to affect such recruitment/progression. Variation exists by gender and by contextual positioning in the process (i.e. as evaluator/candidate). These practices illustrate the perceived importance of the enactment of informal power. The article suggests that the construct of excellence is used to obscure these practices and to maintain organisational legitimacy in the context of multiple stakeholders with conflicting expectations.  相似文献   

Structuring and sequencing of complex text-picture combinations     

Bernd Weidenmann  Manuela Paechter  Klaus Hartmannsgruber 《European Journal of Psychology of Education - EJPE》1999,14(2):185-202

This study investigates the structuring and sequencing of a special type of verbal-pictorial learning material, namely “explanative illustrations” (Mayer, 1993). In such illustrations verbal and pictorial parts form an integrated whole with text embedded in the pictures and vice versa. Due to their complexity such instructing illustrations impose high demands on information processing. From the viewpoint of instruction one may ask how the reception of such explanative illustrations may be supported by an appropriate structure and sequence of the content. In two empirical investigations three types of content structures and sequences were compared to each other: (1) a top-down sequence (based on assumptions of the “Elaboration Theory”, Reigeluth, 1987b) from the whole to details which shows how details are embedded within the larger context), (2) a bottom-up sequence from details to the whole, (3) the presentation as a whole (as in print).  相似文献   

Is the Secure Base Phenomenon Evident Here,There, and Anywhere? A Cross‐Cultural Study of Child Behavior and Experts’ Definitions     

German Posada  Ting Lu  Jill Trumbell  Garene Kaloustian  Marcel Trudel  Sandra J. Plata  Paola P. Peña  Jennifer Perez  Susana Tereno  Romain Dugravier  Gabrielle Coppola  Alessandro Constantini  Rosalinda Cassibba  Kiyomi Kondo‐Ikemura  Magaly Nóblega  Ines M. Haya  Claudia Pedraglio  Manuela Verissimo  Antonio J. Santos  Ligia Monteiro  Keng‐Ling Lay 《Child development》2013,84(6):1896-1905

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The role of visual representations for structuring classroom mathematical activity     

Maria Manuela David  Vanessa Sena Tomaz 《Educational Studies in Mathematics》2012,80(3):413-431

It is our presupposition that there is still a need for more research about how classroom practices can exploit the use and power of visualization in mathematics education. The aim of this article is to contribute in this direction, investigating how visual representations can structure geometry activity in the classroom and discussing teaching practices that can facilitate students’ visualization of mathematical objects. We present one illustrative episode that shows how drawings of geometrical figures have a powerful role in structuring and modifying the mathematical activity in the classroom. It was selected from a database that we have been building to investigate the learning of mathematics in public elementary schools in Brazil. The framework of Activity Theory helped in the characterization of the episode as a system of interconnected activities. We discuss the changes and transformations perceived in those activities; and we explore the idea of miniature cycles of learning actions to focus on the mathematical learning that is taking place. We describe the dynamics and the complexity of the ongoing activity in the calculation of areas; and, how drawings form a part, and show their influence, in it. We argue that part of this influence was associated with the contradiction between abstract mathematical ideas and their empirical representations, revealed by the tensions perceived in the activities analysed; and, simultaneously, that we could see as an impelling force for the learning of the rules and norms which regulate the use of visual representations in school mathematics.  相似文献   

Socio-demographic composition of primary initial teacher education entrants in Ireland     

Manuela Heinz  Elaine Keane 《Irish Educational Studies》2013,32(4):523-543

The homogeneity of the teaching profession is an international, as well as national, phenomenon. In an era of significant demographic change in schools and education policy development in Ireland and across Europe, the lack of solid data about the backgrounds of teachers and initial teacher education (ITE) applicants and entrants has hindered informed policy development, including in relation to ITE application procedures, selection criteria as well as teacher supply and demand. In this paper we discuss findings from the Diversity in Initial Teacher Education (DITE) national project. We present analyses of application (N?=?2,437) and survey data (N?=?530) to explore 2014 undergraduate primary (UG P) ITE entrants’ socio-demographic backgrounds. Key findings confirm that primary teaching remains a popular career choice attracting high academic achievers in Ireland. We note the continuing underrepresentation of males and of people from minority national and ethnic backgrounds. Roman Catholics and students without disabilities are overrepresented in the UG P cohort compared to postgraduate post-primary ITE cohorts and the general Irish population. Findings are discussed with reference to Irish and international literature on teacher diversity.  相似文献