Promoting Science Outdoor Activities for Elementary School Children: Contributions from a research laboratory     

Diana Boaventura  Cláudia Faria  Isabel Chagas  Cecília Galvão 《International Journal of Science Education》2013,35(5):796-814

The purposes of the study were to analyse the promotion of scientific literacy through practical research activities and to identify children's conceptions about scientists and how they do science. Elementary school children were engaged in two scientific experiments in a marine biology research laboratory. A total of 136 students answered a questionnaire about their previous habits towards science and carried out the following actions: (1) a guided visit to the laboratory, (2) a brief presentation of the research theme, (3) the development of two experiments, and (4) a questionnaire about the experiments and science conceptions. The research methods included observation, document analysis, and content analysis of the answers to the questionnaires. Additionally, each visit was video recorded in order to design learning materials. The results revealed that most of the pupils were able to follow every stage of experimentation. However, some of them misinterpreted results and conclusions. One implication of the study is that this type of outdoor activity is extremely important to promote meaningful science learning in children, but more care should be taken in practical science activities so that children can overcome some common difficulties when performing scientific inquiry.  相似文献   

Contextualising Learning through the Participatory Construction of an Environmental Education Programme     

Isabel Ruiz‐Mallen  Laura Barraza  Barbara Bodenhorn  Maria de la Paz Ceja‐Adame  Victoria Reyes‐García 《International Journal of Science Education》2013,35(13):1755-1770

Strengthening links between school and community is critical for improving people’s participation in environmental issues. However, Mexican education programmes are generally unrelated to rural students’ life experience and are planned without considering either teachers’ or students’ opinions. This article describes the participatory construction of a preparatory school environmental education (EE) programme in Ixtlan de Juarez, a Mexican indigenous community internationally recognised for sustainable forest management. The qualitative research methods used are based on the action research methodology. Results from interviews conducted with the preparatory school’s headmaster, the coordinator, and nine teachers provided the needed documentation of the school site for contextualising learning activities. Feedback during focus groups with six students, three teachers, five local communal authorities, and two researchers highlighted that all participants perceived the need for creating an educational programme focused on local forest management. The contents and activities of the programme were designed by the focus group’s participants. The programme has been continuously taught by teachers and forest workers since 2005 and was officially integrated with the preparatory school science curriculum in 2006. This participative educational experience has thus transformed the mandatory school curriculum in Ixtlan.  相似文献   

An analytical framework for analyzing student teachers’ verbal interaction in learning situations     

Victoria Sánchez  Mercedes García  Isabel Escudero 《Instructional Science》2013,41(2):247-269

This paper focuses on the study of student teachers’ verbal interaction in learning situations generated in a classroom corresponding to a mathematics methods course. In our work, we incorporate two ‘ways of seeing’ a group: as an entity or as a set composed of individualities. We present an analytical framework that considers two dimensions connected with these ways of seeing the group and four variables corresponding to these dimensions, through which the verbal interaction between student teachers in a group can be considered. As regards the first dimension, the variables included are specific language, cognitive processing, social processing; the second dimension considers the relational variable. We describe each of the different variables that form the framework, and how this framework allows us to analyse the verbal interaction in three groups of student teachers. We believe that building analytic frameworks that allow the study of verbal interaction in detail is worthwhile in the educational field due to their important role in the analysis of learning-teaching processes.  相似文献   

Cognitive processes and math performance: a study with children at third grade of basic education     

Isabel S. Campos  Leandro S. Almeida  Aristides I. Ferreira  Luis F. Martinez  Glória Ramalho 《European Journal of Psychology of Education - EJPE》2013,28(2):421-436

The present study aims to examine the relationship between cognitive factors and mathematical achievement in primary education. Participants were 103 Portuguese third grade students, aged 8 and 9. All participants completed a battery for working memory (WMTB-C), a test of general intelligence (Raven's Progressive Color Matrices), a selective attention test (d2), and mathematical exercises (arithmetic story problems and measurement skills). Data suggested significant correlations between math performance, executive, visuospatial sketchpad and g factor. Our findings suggest the importance of the cognitive factors in two mathematical domains considered. In consonance with the research in this area, we conclude that working memory (WM) assumes an important role in different math curricular achievements.  相似文献   

Leader Communication: Faculty Perceptions of the Department Chair     

Kathleen Czech  G. L. Forward 《Communication quarterly》2013,61(4):431-457

This project asked 202 randomly selected faculty members to evaluate the supportive and defensive communication and leadership behaviors of their department chair. The supportive behavior of problem orientation alone explained 43% of the variance in faculty ratings of chair job effectiveness. On the other hand, empathy explained 68% of the variance in faculty ratings of relational satisfaction with their department chair. In addition, a t test revealed that more effective chairs utilized all 6 of Gibb's supportive communication behaviors more, and 5 of 6 defensive behaviors less, than their more negatively evaluated peers. Second, a series of stepwise regression procedures explained 16% of the variance in bureaucracy scores, 69% of the variance in Machiavellianism, and 62% of the variance in transformational leadership. Finally, the communication behaviors of strategy, neutrality, and problem orientation explained 56% of the variance in faculty job satisfaction and strategy, neutrality, evaluation, gender, and age explained 41% of the variance in organizational commitment scores.  相似文献   

Parental Reports of Children’s Scale Errors in Everyday Life     

Karl S. Rosengren  Isabel T. Gutiérrez  Kathy N. Anderson  Stevie S. Schein 《Child development》2009,80(6):1586-1591

Scale errors refer to behaviors where young children attempt to perform an action on an object that is too small to effectively accommodate the behavior. The goal of this study was to examine the frequency and characteristics of scale errors in everyday life. To do so, the researchers collected parental reports of children’s (age range = 13–21 months at onset) scale errors over a 6‐month period. All but 1 of the parents (N = 30) reported at least 1 scale error with an average of 3.2 scale errors per child. These results suggest that most, if not all, children commit scale errors during early childhood.  相似文献   

MTHFR (Ala 222 Val) polymorphism and AMI in patients with type II diabetes mellitus     

T. Angeline  G. Thiruvarutselvi  W. Isabel  Rita Mary Aruna  Rama Devi  Nirmala Jeyaraj 《Indian journal of clinical biochemistry : IJCB》2009,24(2):137-141

The prevalent Ala222Val single nucleotide polymorphism of the MTHFR gene has been shown to be associated with type II diabetes. The objective of the present study was to find out whether there is genetic predisposition for development of acute myocardial infarction in type II diabetes mellitus among South Indian Tamil population. PCR-based restriction enzyme analysis was performed in DNA isolated from 120 acute myocardial infarction patients with diabetes mellitus and 100 non diabetic healthy individuals with no documented cardiovascular diseases. The results indicate that the MTHFR 677TT genotype is absent in both case and controls. The MTHFR 677CT genotype was observed among 32 (26.7 %) cases and 20 (20%) controls and the MTHFR 677CC genotype among 88 (73.3%) cases and 80 (80%) controls. The allelic frequencies were in accordance to Hardy Weinberg equilibrium. There was no statistical difference in genotype distribution between cases and controls. In conclusion, we suggest that the analysis of MTHFR genotyping for C677T polymorphism alone need not be considered to find out whether there is genetic predisposition for development of acute myocardial infarction in type II diabetes mellitus among South Indian Tamil population.  相似文献   

Effects of different percentages of body weight support on spatiotemporal step characteristics during running     

Luis E. Roche-Seruendo  Isabel Auria-Martin  Ana V. Bataller-Cervero  Pedro A. Latorre Román  Victor M. Soto -Hermoso 《Journal of sports sciences》2018,36(13):1441-1446

This study aimed to determine the effect of different percentages of body weight support (BWS) on spatiotemporal step characteristics during running. 26 endurance runners (age: 37 ± 9 years) completed a running treadmill protocol consisting of 6 different conditions (BWS combinations: 0–50%), with velocity maintained at 12 km/h. Each condition lasted 1 minute. Step angle, ground contact time (CT), flight time (FT), step length (SL) and frequency (SF), and duration of phases during stance time (phase1: initial contact; phase2: midstance; phase3: propulsion) were measured for every step during the test using a photoelectric cell system. Compared with the baseline condition (100% BW), FT was longer, CT was shorter, SL was longer, SF was lower, and the step angle was higher with each increase in BWS (p < 0.05). Also, some changes were observed in the duration of phases during stance time: phase1 did not experience changes across experimental conditions (p = 0.096), phase2 decreased and phase3 increased as BW was supported (p < 0.05). These results indicate that as BW was supported, runners showed longer FT and SL, shorter CT, lower SF, and greater step angle as well as some changes in the phases during the ground contact. Therefore, this study highlights the effect of different percentages of BWS on spatiotemporal parameters.  相似文献   

Embedding external referencing of standards into higher education: collaborative relationships are the key     

Lesley Sefcik  Simon Bedford  Peter Czech  Judith Smith  Jonathan Yorke 《Assessment & Evaluation in Higher Education》2018,43(1):45-57

External referencing of assessment and students’ achievement standards is a growing priority area within higher education, which is being pressured by government requirements to evidence outcome attainment. External referencing benefits stakeholders connected to higher education by helping to assure that assessments and standards within courses are appropriate and comparable among institutions. External referencing takes many forms, which have different resourcing requirements, outcomes, and operational strengths and challenges. This paper describes the External Referencing of Standards (ERoS) approach developed, tested and adopted by a university consortium. ERoS draws on the strengths of existing methodologies to produce an evolved model that is effective, efficient, transparent and open, capability building and sustainable. The model enables participants to communicate directly and construct peer relationships, and findings suggest this is a significant design strength. The process facilitates capability building, such that participants garnered insights valuable to enact quality assurance and enhancement of existing courses, and fosters connections that facilitate collaboration and peer-learning. ERoS successfully used open source collaborative tools to review work samples, which can be used to benchmark costed systems.  相似文献   

The impact of firm participation in R&D programmes on R&D partnerships     

Isabel Busom  Andrea Fernández-Ribas 《Research Policy》2008,37(2):240-257

R&D subsidies designed to encourage innovation efforts by firms may have intended and unintended effects on the way they organize their innovation process. We present empirical evidence on how R&D subsidies affect firms’ R&D cooperation strategies. In particular, we investigate whether receiving public R&D subsidies affect the probability that a firm will set up an R&D partnership with a public research organization (PRO), or with other firms. Our main findings are: (i) public support significantly increases the chances that a firm will cooperate with a PRO, and (ii) public support also increases the likelihood that a firm will establish private partnerships, but to a smaller extent and only when firms have intangible knowledge assets. These results suggest that public R&D programmes trigger a behavioural change in firms’ R&D partnerships, alleviating barriers to cooperation.  相似文献