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Clara Viegas
  • Porto, Portugal
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Laboratory experiments are one of the backbones of engineering teaching, as they help students learning in a unique way, providing better understanding of scientific theories, clarifying concepts and principles as well as improving their... more
Laboratory experiments are one of the backbones of engineering teaching, as they help students learning in a unique way, providing better understanding of scientific theories, clarifying concepts and principles as well as improving their technical skills. Nevertheless, with the Bologna Process reforms and the economic constraints most Higher Education Institutions face nowadays, caused a significant decline in the amount of time devoted to hands-on lab. Researchers are seeking complementary ways to teach these practical skills and recently, with the explosive popularity of computer-based learning, remote labs are being used as an option. This review paper presents a first attempt to compile empirical studies that directly report the use of the remote laboratory VISIR (Virtual Instrument Systems in Reality). These practices of engineering classes/courses, used VISIR individually or as a complement to traditional hands on laboratory. Concerning these different approaches of how VISIR is used, the authors draw several conclusions-findings suggest that VISIR is a useful learning instrument, having been used, so far, by more than 4400 students. It contributes to improve students' competences and knowledge, their confidence in lab and their enthusiasm and motivation. Some factors, such as teacher's supervision and attention to the VISIR component play a crucial role in students' engagement. Finally, the results achieved through this review raise several important and still non-studied issues to be addressed by future research.
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Este artigo aborda diferentes integrações do VISIR. O VISIR é um laboratório aberto remoto dedicado a experimentos com circuitos elétricos e eletrónicos. Este laboratório permite que professores e alunos tenham oportunidade de contatar... more
Este artigo aborda diferentes integrações do VISIR. O VISIR é um laboratório aberto remoto dedicado a experimentos com circuitos elétricos e eletrónicos. Este laboratório permite que professores e alunos tenham oportunidade de contatar com experimentos remotamente e em tempo real, com equipamentos de teste e medição (fonte de alimentação tripla DC, gerador de funções, multímetro e um osciloscópio) ligado a componentes elétricos e eletrónicos. As abordagens didáticas são resumidas e as análises feitas fornecem explicações para alguns dos problemas encontrados, além de algumas diretrizes para futuras implementações. Uma série de pontos fortes e fracos é destacada, levando a sugestões sobre como aprimorar algumas abordagens estratégicas para motivar professores e motivar alunos para o potencial da utilização do VISIR no ensino e na aprendizagem. São apresentadas referências apropriadas para trabalhos publicados anteriormente que ajudam a entender o contexto de pesquisa e as lições deri...
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Os laboratórios remotos são uma fer ramenta tecnológica e pedagógica com uso crescente em todos os níveis de educação, e sua utilização generalizada é uma parte importante do seu próprio aperfeiçoamento e evolução. Este artigo descreve... more
Os laboratórios remotos são uma fer ramenta tecnológica e pedagógica com uso crescente em todos os níveis de educação, e sua utilização generalizada é uma parte importante do seu próprio aperfeiçoamento e evolução. Este artigo descreve vários problemas encontrados em aulas laboratoriais, em cursos de ensino superior, na utilização de laboratórios remotos baseados em sistemas P X I, utilizando o sistema V ISI R ou uma solução alternativa. São identificados e explicados três problemas que foram relatados por professores que deram apoio aos estudantes na utilização dos laboratórios remotos. O primeiro problema prende-se com a necessidade de per mitir aos alunos selecionar a localização específica onde um amperímetro deve ser inserido nos circuitos elétricos, mesmo que incor reta, replicando as dificuldades do mundo real. O segundo é causado por falhas de sincronismo quando são necessárias várias medições em intervalos curtos, como no ciclo de descarga de um condensador. E o último prob...
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Students experimental competences are of most importance in engineering courses. However in post-Bologna courses, the number of contact hours and the actual extent of hands-on lab work were substantially reduced. Online resources usage... more
Students experimental competences are of most importance in engineering courses. However in post-Bologna courses, the number of contact hours and the actual extent of hands-on lab work were substantially reduced. Online resources usage (simulators and remote labs) has been growing up in the last decades, as more complex and versatile tools are being developed. Unfortunately, several of these usages reported in literature do not show the didactical backing that support these implementations. This work is a step forward, explaining how a teacher implemented a combination of online resources in order to develop experimental competences. The results show significant correlations between students' usage of these resources and their calculus competences and final achievements.
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Cada área do conhecimento tem a sua própria linha de evolução, ora dividindo-se em novas áreas ora abandonando algumas disciplinas para dar lugar a outras com enquadramento mais recente. Como resultado disso pode-se constatar a tendência... more
Cada área do conhecimento tem a sua própria linha de evolução, ora dividindo-se em novas áreas ora abandonando algumas disciplinas para dar lugar a outras com enquadramento mais recente. Como resultado disso pode-se constatar a tendência para uma determinada disciplina ter uma abordagem diferente nos vários cursos onde é le cionada. Deste modo, ensinar a disciplina de eletrônica num curso Engenharia Eletrônica é feito de um modo diferente do que é feito num curso de Engenharia Eletrotécnica de Energia. No primeiro caso a disciplina assume alguma profundidade enquanto no segundo caso os vários temas são, quando muito, aflorados de modo algo superficial. Esta est ratégia apresenta várias vantagens para o estudante, tais como o custo e tempo necessários para a introdução no mercado de trabalho. No entanto, pode-se também identificar algumas limitações desta abordagem, das quais a principal se refere ao nível relativamente baixo de competências em algumas áreas importantes, habitualment...
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The evolution of new technology and its increasing use, has for some years been making the existence of informal learning more and more transparent, especially among young and older adults in both Higher Education and workplace contexts.... more
The evolution of new technology and its increasing use, has for some years been making the existence of informal learning more and more transparent, especially among young and older adults in both Higher Education and workplace contexts. However, the nature of formal and non-formal, coursebased, approaches to learning has made it hard to accommodate these informal processes satisfactorily. The project aims to facilitate first the identification by the learner (as the last responsible of the learning process), and then the recognition by the institution, in dialogue with the learner, of this learning. To do so a methodology and a technological framework to support it have been implemented. This project have been tested in several context and it is possible to say that an informal learning dialogue between learners and people in chargé of the institutions is possible.
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ABSTRACT According to recent studies, informal learning accounts for more than 75% of our continuous learning through life. However, the awareness of this learning, its benefits and its potential is still not very clear. In engineering... more
ABSTRACT According to recent studies, informal learning accounts for more than 75% of our continuous learning through life. However, the awareness of this learning, its benefits and its potential is still not very clear. In engineering contexts, informal learning could play an invaluable role helping students or employees to engage with peers and also with more experience colleagues, exchanging ideas and discussing problems. This work presents an initial set of results of the piloting phase of a project (TRAILER) where an innovative service based on Information & Communication Technologies was developed in order to aid the collection and visibility of informal learning. This set of results concerns engineering contexts (academic and business), from the learners' perspective. The major idea that emerged from these piloting trials was that it represented a good way of collecting, recording and sharing informal learning that otherwise could easily be forgotten. Several benefits were reported between the two communities such as being helpful in managing competences and human resources within an institution.
Traditionally, in physics teaching, an appreciable time is spent developing exercises on t he blackboard, in which students do little work. We pr esent an alternative approach, based on physics education research, taking into... more
Traditionally, in physics teaching, an appreciable time is spent developing exercises on t he blackboard, in which students do little work. We pr esent an alternative approach, based on physics education research, taking into consideration the Bologna's perspective to actively involve students and specia lly oriented to develop certain important competencies in engineering students. Basically, it uses collaborat ive work
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ABSTRACT Remote Laboratories are an emergent technological and pedagogical tool at all education levels, and their widespread use is an important part of their own improvement and evolution. This paper describes several issues encountered... more
ABSTRACT Remote Laboratories are an emergent technological and pedagogical tool at all education levels, and their widespread use is an important part of their own improvement and evolution. This paper describes several issues encountered on laboratorial classes, on higher education courses, when using remote laboratories based on PXI systems, either using the VISIR system or an alternate in-house solution. Three main issues are presented and explained, all reported by teachers that gave support to students’ use of remote laboratories. The first issue deals with the need to allow students to select the actual place where an ammeter is to be inserted on electric circuits, even incorrectly, therefore emulating real-world difficulties. The second one deals with problems with timing when several measurements are required at short intervals, as in the discharge cycle of a capacitor. And the last issue deals with the use of a multimeter in DC mode when reading AC values, a use that collides with the lab settings. All scenarios are presented and discussed including the solution found for each case. The conclusion derived from the described work is that the remote laboratories area is an expanding field, where practical use leads to improvement and evolution of the available solutions, requiring a strict cooperation and information-sharing between all actors, i.e. developers, teachers and students.
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People do not learn only in formal educational institutions, but also throughout their lives, from their experiences, conversations, observations of others, exploration of the Internet, meetings and conferences, and chance encounters etc.... more
People do not learn only in formal educational institutions, but also throughout their lives, from their experiences, conversations, observations of others, exploration of the Internet, meetings and conferences, and chance encounters etc. However this informal and non-formal learning can easily remain largely invisible, making it hard for peers and employers to recognize or act upon it. The TRAILER project aims to make this learning visible so that it can benefit both the individual and the organization. The proposed demonstration will show a software solution that (i) helps the learners to capture, organize and classify a wide range of 'informal' learning taking place in their lives, and (ii) assists the organization in recognizing this learning and use it to help managing human resources (benefiting both parts). This software tool has recently been used in two phases of pilot studies, which have run in four different European countries.
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Informal Learning plays an important role in everyone's life and yet we often are unaware of it. The need to keep track of the knowledge acquired through informal learning is increasing as its sources become increasingly diverse. This... more
Informal Learning plays an important role in everyone's life and yet we often are unaware of it. The need to keep track of the knowledge acquired through informal learning is increasing as its sources become increasingly diverse. This paper presents a study on a tool developed to help keeping track of learners’ informal learning, both within academic and professional contexts, This tool, developed within the European Commission funded TRAILER project, will further integrate the improvements suggested by users during the piloting phase. The two studied contexts were similar regarding the importance and perception of Informal Learning, but differed concerning tool usage. The overall idea of managing one’s informal learning was well accepted and welcomed, which validated the emerging need for a tool with this purpose.