From resource to document: scaffolding content and organising student learning in teachers’ documentation work on the teaching of series     

Alejandro S. González-Martín  Elena Nardi  Irene Biza 《Educational Studies in Mathematics》2018,98(3):231-252

We examine teachers’ use of resources as they prepare to teach the topic of numerical series of real numbers, in order to identify how their personal relationship with mathematical content—and its teaching—interacts with their use of a commonly used textbook. We describe this interplay between textbook and personal relationship, a term coined in the Anthropological Theory of the Didactic (ATD, Chevallard, 2003), in terms of documentation work (resources, aims, rules of action, operational invariants), a key construct from the documentational approach (DA, Gueudet & Trouche, in Educational Studies in Mathematics, 71, 199–218, 2009). We do so in the case of five post-secondary teachers who use the same textbook as a main resource for teaching the topic. Documentational analysis of interviews with the teachers led to the identification of their aims and rules of action (the what and how of their resource use as they organise their teaching of the topic) as well as the operational invariants (the why for this organisation of their teaching). We describe the teachers’ documentation work in two sets of aims/rules of action: scaffolding mathematical content (series as a stepping stone to learning about Taylor polynomials and Maclaurin series), and organising student learning about series through drill exercises, visualisation, examples, and applications. Our bridging (networking) of theoretical constructs originating in one theoretical framework (personal relationship, ATD) with the constructs of a different, yet compatible, framework (documentation work, DA) aims to enrich the latter (teachers’ documentation work) with the individual agency (teachers’ personal relationships with the topic) provided by the former.  相似文献   

Greek primary school children’s representations of the urban environment as seen through their drawings     

Dimitrios Stokas  Elena Strezou  Penelope Papadopoulou 《Environmental Education Research》2017,23(8):1088-1114

In the present study, we explore aspects of Greek primary school children’s representations about the urban environment through the use of drawings and their relation to sustainability. For that purpose, 104 children, aged 9–12 (4th and 6th grades), were asked to make two drawings of their town: one as it is now and another as they would like it to be. Drawings were analysed using pre-defined categories of urban sustainability and were statistically analysed using SPSS. Results revealed a serious gap in knowledge regarding energy and aspects of local development tied to sustainability in the current and future state of the children’s towns. Although the most popular characteristics in the children’s drawings were associated with the environment, the majority of children illustrated issues related to society. Evidence indicated an age-related progression of representations related to sustainability in the urban environment, at least concerning the topics of natural environment, infrastructure and the realization of problems caused by air pollution and municipal waste generation.  相似文献   

Reasons and mediators in the development and communication of personal digital stories     

Rodríguez-Illera  José Luis  Barberà Gregori  Elena  Molas-Castells  Núria 《Education and Information Technologies》2021,26(4):4093-4109

The expansion of access to devices, as well as the production and publication options in social networks requires a broader definition of the traditional notion of personal digital storytelling. To get a deeper understanding of these practices in the group of adolescents, the objective of this article is to analyze what are the reasons that direct the publications of personal stories and what kind of filters, agents and consequences are articulated in these stories. To do this, the most qualitative part of an investigation on teenagers’ internet publication guidelines is synthesized. Specifically, the results of a semi-structured interview with 12 adolescents between 12 and 20 years are shown. The answers show that the interviewees’ perspective on what a digital story is goes beyond the format and varies depending on the network where it is published and the type of content. Thus, the emphasis and motivation of the publication has shifted from the digital - which has been incorporated with something normal and not differential - towards the personal, focusing the publications on the daily life of young people. An extension and refinement of the public-private dichotomy has been identified, maintaining general privacy guidelines above the dissemination of publications. As for filters, publications are preceded by the widespread use of image modification tools. Finally, the answers show the influence of personal agents, mostly friends and brothers, and technology agents, which determine the relationship between the type of story and the network where it is published.

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Survivor: The role of innovation in firms’ survival     

Elena Cefis  Orietta Marsili 《Research Policy》2006,35(5):626-641

This paper explores the relationship between innovation and the survival probability of manufacturing firms in the Netherlands, conditional on firm age and size. The empirical analysis combines firm level data on innovation, derived from the second Community Innovation Survey, and on the date of exit, from the Business Register of all firms active in the Netherlands. To estimate the survival probability of a firm we use a non-parametric approach, based on the calculation of Transition Probability Matrices over different time periods. The results show that innovation has a positive and significant effect on the probability of firms’ survival. This effect increases over time and is conditional on firm age and size; we observe that small and young firms are the most exposed to the risk of exit, as found in earlier studies, but also those that most benefit of innovation to survive in the market, especially in the longer term.  相似文献   

CAVEman: Standardized anatomical context for biomedical data mapping     

Andrei L. Turinsky  Elena Fanea  Quang Trinh  Stephen Wat  Benedikt Hallgrímsson  Xiaoli Dong  Xueling Shu  Julie N. Stromer  Jonathan W. Hill  Carol Edwards  Brenda Grosenick  Masumi Yajima  Christoph W. Sensen 《Anatomical sciences education》2008,1(1):10-18

The authors have created a software system called the CAVEman, for the visual integration and exploration of heterogeneous anatomical and biomedical data. The CAVEman can be applied for both education and research tasks. The main component of the system is a three‐dimensional digital atlas of the adult male human anatomy, structured according to the nomenclature of Terminologia Anatomica. The underlying data‐indexing mechanism uses standard ontologies to map a range of biomedical data types onto the atlas. The CAVEman system is now used to visualize genetic processes in the context of the human anatomy and to facilitate visual exploration of the data. Through the use of Java? software, the atlas‐based system is portable to virtually any computer environment, including personal computers and workstations. Existing Java tools for biomedical data analysis have been incorporated into the system. The affordability of virtual‐reality installations has increased dramatically over the last several years. This creates new opportunities for educational scenarios that model important processes in a patient's body, including gene expression patterns, metabolic activity, the effects of interventions such as drug treatments, and eventually surgical simulations. Anat Sci Ed 1:10–18, 2008. © 2007 American Association of Anatomists.  相似文献   

How has Mexican faculty been trained? A national perspective and a case study     

Laura Elena Padilla 《Higher Education》2008,56(2):167-183

This article depicts how faculty members at Mexican higher education institutions have been prepared in order to assume their professional responsibilities. It relies on three elements: First, a secondary analysis of a national faculty survey composed of 3,861 faculty members from 65 institutions; second, 34 interviews conducted in eight higher education institutions; third, a primary analysis of an institution faculty survey in a public autonomous university. Results are presented regarding the following issues: first, the central traits of anticipatory or formative in-site faculty socialization; second, the changes in the highest degree faculty obtained at entry into academic life as compared to the obtained degree at the time of the survey; third, the formative time patterns during faculty’s higher education training, fourth, the conditions of study under which faculty members obtained their graduate degrees; and fifth, the academic inbreeding phenomenon.  相似文献   

A Cross-Cultural Analysis of Early Prelinguistic Gesture Development and Its Relationship to Language Development     

Thea Cameron-Faulkner  Nivedita Malik  Circle Steele  Stefano Coretta  Ludovica Serratrice  Elena Lieven 《Child development》2021,92(1):273-290

Many Western industrialized nations have high levels of ethnic diversity but to date there are very few studies which investigate prelinguistic and early language development in infants from ethnic minority backgrounds. This study tracked the development of infant communicative gestures from 10 to 12 months (n = 59) in three culturally distinct groups in the United Kingdom and measured their relationship, along with maternal utterance frequency and responsiveness, to vocabulary development at 12 and 18 months. No significant differences were found in infant gesture development and maternal responsiveness across the groups, but relationships were identified between gesture, maternal responsiveness, and vocabulary development.  相似文献   

Function,kinetic properties,crystallization, and regulation of microbial malate dehydrogenase     

Tóshiko Takahashi-Íñiguez  Nelly Aburto-Rodríguez  Ana Laura Vilchis-González  María Elena Flores 《Journal of Zhejiang University. Science. B》2016,17(4):247-261

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Learning paths in synthesis writing: Which learning path contributes most to which learning outcome?     

Mateos  Mar  Rijlaarsdam  Gert  Martín  Elena  Cuevas  Isabel  Van den Bergh  Huub  Solari  Mariana 《Instructional Science》2020,48(2):137-157

Instructional Science - This paper presents a secondary analysis of data collected during an intervention study in which students learnt to synthesise pairs of texts presenting opposite views on...  相似文献   

Change management in extremis: A case study     

Elena Carrillo 《Journal Of Access Services》2019,16(1):21-33

After 40 years under one manager, the Circulation Department at the Richard J. Daley Library was long past due for a change. The challenge of reorganizing included interesting and interrelated aspects: changes to workflows and assignments, moving staff and functions inside the department and across departments, and a deep dive into the culture to which staff had become habituated. Managers eliminated redundancies and increased services, effectiveness, productivity, and joy. This case study is a testament to how successful change happens with patience, respect, and a willingness to be flexible.  相似文献