A case study on project led education in engineering: students' and teachers' perceptions   总被引：1，自引：1，他引：1  

Rui M. Lima  Dinis Carvalho  Maria Assunção Flores  Natascha Van Hattum-Janssen 《European Journal of Engineering Education》2007,32(3):337-347

This paper explores the extent to which students and teachers are able to acknowledge the strengths and weaknesses of a shift in the approach to teaching and learning from a traditional, teacher-centred perspective towards project- and learner-centred education. It reports on a case study aimed at exploring students' and teachers' perceptions of a project-led education course carried out at an engineering course at a Portuguese university. Data were collected through questionnaires, letters and interviews. Findings suggest, in spite of some negative experiences and final results for some of the students, a clear recognition of the benefits of a project-based approach to both the teaching staff as well as the students. Both are able to identify interdisciplinarity, high student motivation and the acquisition of soft skills as key features of project-led education.  相似文献   

Concept or computation: Students' understanding of the mean     

A. Pollatsek  S. Lima  A. D. Well 《Educational Studies in Mathematics》1981,12(2):191-204

In statistics, and in everyday life as well, the arithmetic mean is a frequently used average. The present study reports data from interviews in which students attempted to solve problems involving the appropriate weighting and combining of means into an overall mean. While mathematically unsophisticated college students can easily compute the mean of a group of numbers, our results indicate that a surprisingly large proportion of them do not understand the concept of the weighted mean. When asked to calculate the overall mean, most subjects answered with the simple, or unweighted, mean of the two means given in the problem, even though these two means were from different-sized groups of scores. For many subjects, computing the simple mean was not merely the easiest or most obvious way to initially attack the problem; it was the only method they had available. Most did not seem to consider why the simple mean might or might not be the correct response, nor did they have any feeling for what their results represented. For many students, dealing with the mean is a computational rather than a conceptual act. Knowledge of the mean seems to begin and end with an impoverished computational formula. The pedagogical message is clear: Learning a computational formula is a poor substitute for gaining an understanding of the basic underlying concept.Research support: Research reported in this paper was supported by NSF research award No. SED78-22043 in the Joint National Institute of Education-National Science Foundation Program of Research on Cognitive Processes and the Structure of Knowledge in Science and Mathematics.  相似文献   

农村初中学困生心理障碍类型及其对策研究     

姚定良 《浙江教育学院学报》2002,(4)

许多研究表明,初中学困生患心理障碍的可能性大大超过一般学生。在对浙江省慈溪市周巷镇100名初中学困生进行调查访谈的基础上,初步分析了农村初中学困生较为普遍存在的心理障碍类型及其对策。  相似文献   

Literacy and the possible dream   总被引：1，自引：0，他引：1  

Paulo Freire 《Prospects》1976,6(1):68-71

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The continuous nature of timing reprogramming in an interceptive task     

Teixeira LA  Lima Edos S  Franzoni MM 《Journal of sports sciences》2005,23(9):943-950

The time course of movement timing reprogramming was examined in a task requiring temporal coincidence of the conclusion of a forehand drive with the arrival of a moving luminous target at the end of an electronic trackway. The moving target departed from one end of the trackway at a constant velocity of 2 m (.) s(-1), and for a part of the trials its velocity was increased to 3 m (.) s(-1). Target velocity was modified at different moments during stimulus displacement, producing times-to-arrival after velocity increment (TAVIs) from 100 to 600 ms. The effect of specific practice on movement reprogramming was also examined. The results showed early adjustments to the action (TAVIs = 100 - 200 ms) that seemed to be stereotyped, while feedback-based corrections were implemented only at TAVIs of 300 ms or longer. Temporal accuracy was progressively increased as longer TAVIs were provided up to 600 ms. Skill training led to an overall increment of temporal accuracy, but no effect of specific practice was found. The results indicate that timing reprogramming in interceptive actions is a continuous process limited mainly by intrinsic factors: latency to initiate more effective adjustments to the action, and rate-of-movement timing reprogramming.  相似文献   

Technical replicas of Portuguese ceramic tile bodies produced in the Oporto region in the late nineteenth to early twentieth centuries     

Marisa Costa  Paulo Cachim  João Coroado  Ana Luisa Velosa 《文物保护研究》2016,61(2):63-73

Portugal is well known for its facades decorated entirely with ornamented glazed ceramic wall tiles called azulejos. On ageing, the tiles may detach and fall off, or deteriorate to such an extent that it becomes necessary to replicate them. Hence tile replication is a common practice in Portugal for façade restoration, but very often these new tiles do not have the same physical and/or chemical properties as the original ones. Such differences might be a factor in differential deterioration of the façades after restoration. One step toward an improvement in compatibility is to make new ceramic bodies with the same characteristics as the original ones. This study focuses on two types of glazed ceramic wall tiles from the Oporto region in Portugal: ‘calcic faience’ and pó de pedra. A total of 25 samples from the late nineteenth to early twentieth centuries were studied systematically as an attempt to improve knowledge of these materials and to create a basis for their replication. All samples were collected from facades that were under conservation/restoration at the time when sampling was performed. The original traditional ceramic bodies were analyzed by X-ray diffraction and X-ray fluorescence. Total open porosity, capillary absorption coefficient, and mercury intrusion porosimetry were also measured in order to gain knowledge on their physical characteristics in addition to their chemical and mineralogical compositions. High-temperature crystalline phases such as diopside, gehlenite, and mullite were found in the calcic faience, suggesting that the firing temperature of calcic faience bodies was within the range of 1100–1150?°C. Calcination trials were also performed in order to determine the most probable firing temperatures of the ceramic bodies. Collected data led to the assumption that the raw materials used for the ceramic bodies were kaolinitic clay, quartz sand, limestone, and talc. The raw materials for pó de pedra tiles were found to include kaolinite clay and quartz with firing temperatures estimated within the temperature range of 1150–1360?°C. Technical replicas made on the basis of these investigations were found to have the same mineralogical and capillary properties as the original tiles.  相似文献   

Dynamics of temporal discrimination     

Guilhardi P  Church RM 《Learning & behavior》2005,33(4):399-416

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Using a Satisfaction Index to Compare Students’ Satisfaction During and After Higher Education Service Consumption     

Duarte  Paulo O.  Raposo  Mário B.  Alves  Helena B. 《Tertiary Education and Management》2012,18(1):17-40

Tertiary Education and Management - This study explores the factors that influence students’ satisfaction with higher education services and assess how they change after graduation, when...  相似文献   

Students’ and teachers’ perspectives about quality of engineering education in Portugal     

Cristina G. Oliveira  Paulo C. Oliveira  Nilza Costa 《European Journal of Engineering Education》2012,37(1):49-57

Quality in higher education is a subject of increasing importance. This idea can be supported by looking at different sources, namely, the scientific literature, national and transnational governments’ policies, such as those emerging from the Bologna Process. Also, the internationalisation of higher education and, within it, students’ and staff mobility among institutions, has brought to the agenda the quality issue, particularly with regard to the teaching and learning process. Several authors argue that the meaning of quality depends on who defines it. This article focuses on a study that looks at how teachers and students in higher education institutions, in Portugal and in the domain of Engineering, see the quality issue. Data was collected through interviews to teachers (six) and students (38) in two different Portuguese institutions. The results indicate that, although teachers and students refer to the same dimensions that influence quality, they have different perspectives about their importance. From the point of view of the authors, this discrepancy requires some pedagogical actions in the context where the study was developed and, also, further research to see if the same tendency exists in different settings.  相似文献   

Within- and Between-Day Repeatability and Variability in Children's Physiological Responses During Submaximal Treadmill Exercise     

Paulo R. S. Amorim  Nuala Mary Byrne  Andrew P. Hills 《Research quarterly for exercise and sport》2013,84(3):575-582

The purpose of this study was to verify within- and between-day repeatability and variability in children's oxygen uptake (VO₂), gross economy (GE; VO₂ divided by speed) and heart rate (HR) during treadmill walking based on self-selected speed (SS). Fourteen children (10.1 ± 1.4 years) undertook three testing sessions over 2 days in which four walking speeds, including SS were tested. Within- and between-day repeatability were assessed using the Bland and Altman method, and coefficients of variability (CV) were determined for each child across exercise bouts and averaged to obtain a mean group CV value for VO₂, GE, and HR per speed. Repeated measures analysis of variance showed no statistically significant differences in within- or between-day CV for VO₂, GE, or HR at any speed. Repeatability within- and between-day for VO₂, GE, and HR for all speeds was verified. These results suggest that submaximal VO₂ during treadmill walking is stable and reproducible at a range of speeds based on children's SS.  相似文献