How do teachers help children to learn? An analysis of teachers' interventions in computer-based activities     

Neil Mercer  Eunice Fisher 《Learning and Instruction》1992,2(4)

In British schools, educational software is normally used by children working under the supervision of a teacher, who will have set them specific tasks and organize them to work at the computer in pairs or groups. However, those theories of learning which have most influenced research into the design and use of educational software have been essentially concerned with individualized learning, and are insensitive to the nature of teaching and learning as a communicative, culturally-based process. The present paper discusses an alternative theoretical perspective, one derived from the work of Vygotsky. This is used in an analysis of interventions made by teachers in the computer-based activities of their pupils, using observational data gained from video-recordings of primary school classrooms. The usefulness of the theoretical perspective is evaluated, and implications for the development of computer-based activities are discussed.  相似文献   

Identifying 21st Century STEM Competencies Using Workplace Data     

Hyewon Jang 《Journal of Science Education and Technology》2016,25(2):284-301

Gaps between science, technology, engineering, and mathematics (STEM) education and required workplace skills have been identified in industry, academia, and government. Educators acknowledge the need to reform STEM education to better prepare students for their future careers. We pursue this growing interest in the skills needed for STEM disciplines and ask whether frameworks for 21st century skills and engineering education cover all of important STEM competencies. In this study, we identify important STEM competencies and evaluate the relevance of current frameworks applied in education using the standardized job-specific database operated and maintained by the US Department of Labor. Our analysis of the importance of 109 skills, types of knowledge and work activities, revealed 18 skills, seven categories of knowledge, and 27 work activities important for STEM workers. We investigate the perspectives of STEM and non-STEM job incumbents, comparing the importance of each skill, knowledge, and work activity for the two groups. We aimed to condense dimensions of the 52 key areas by categorizing them according to the Katz and Kahn (1978) framework and testing for inter-rater reliability. Our findings show frameworks for 21st century skills and engineering education do not encompass all important STEM competencies. Implications for STEM education programs are discussed, including how they can bridge gaps between education and important workplace competencies.  相似文献   

An Investigation into the Dimensionality of TOEFL Using Conditional Covariance-Based Nonparametric Approach   总被引：1，自引：0，他引：1  

Eunice Eunhee Jang  Louis Roussos 《Journal of Educational Measurement》2007,44(1):1-21

This article reports two studies to illustrate methodologies for conducting a conditional covariance-based nonparametric dimensionality assessment using data from two forms of the Test of English as a Foreign Language (TOEFL). Study 1 illustrates how to assess overall dimensionality of the TOEFL including all three subtests. Study 2 is aimed at illustrating how to conduct dimensionality analyses for a testlet-based test by focusing on the Reading Comprehension (RC) section in combination with item content analyses and hypothesis testing. The results of Study 1 indicated that both TOEFL forms involve two dominant dimensions corresponding to the Listening Comprehension section and the combination of the Reading Comprehension section and Structure and Written Expression section. The extensive RC analyses from Study 2 revealed strong evidence that a significant amount of the RC multidimensionality came from testlet effects. Confirmatory analyses coupled with exploratory cluster analyses and substantive item content analyses further identified dimensionality structure having to do with reading subskills.  相似文献   

Professional Portfolios: Bringing Life to Your Best Work     

Daniel Yaffe  Eunice Ofori  Miguel Nino 《TechTrends》2016,60(4):307-308

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An Assessment of Environmental Literacy and Analysis of Predictors of Responsible Environmental Behaviour Held by Secondary Teachers in the Hualien Area of Taiwan     

Shih‐Jang Hsu  Robert E. Roth 《Environmental Education Research》1998,4(3):229-249

This study assessed teachers' environmental literacy and analysed predictors of teachers' responsible environmental behaviour (REB). A nine page instrument was administered by mailed questionnaire to 300 randomly selected secondary teachers in the Hualien area of Taiwan with a 52.3% effective response rate. As a result of stepwise multiple regression analyses, the most parsimonious set of predictors of REB for all teachers included: perceived knowledge of environmental action strategies (KNOW), intention to act, area of residence and perceived skill in using environmental action strategies (SKILL, total r² = 0.3867). For urban teachers, the most parsimonious set of predictors included: intention to act, SKILL, major sources of environmental information and membership in environmental organisations (total r² = 0.4711). For rural teachers, the most parsimonious set of predictors included: KNOW, intention to act and perceived knowledge of environmental problems and issues (total r² = 0.3200). Implications for programme development and instructional practice are presented. Recommendations for further research are also provided.  相似文献   

Self-modeling as an intervention to increase student classroom participation     

Eunice T. Hartley  Melissa A. Bray  Thomas J. Kehle 《Psychology in the schools》1998,35(4):363-372

The effect of self-modeling as an intervention to increase individual participatory behavior in the classroom was investigated using a multiple baseline design across three second grade students with a follow-up. In addition, a control student was employed to further investigate the effects of the intervention. Self-modeling is defined as the positive change in behavior resulting from spaced viewing of oneself on edited tapes depicting exemplary behavior. Students viewed edited videotapes of themselves successfully volunteering to participate in class by raising their hand. The three students, during baseline, had a mean participation rate ranging between 8% and 24% compared with the control student's rate ranging between 53% and 63%. During intervention, the mean participation rate ranged between 28% and 60% compared with the control student's rate ranging between 43% and 46%. At follow-up, students had a mean percentage rate ranging between 44% and 64% compared with the control student's rate of 53%. Thus, they more closely approximated or surpassed the control student's mean rate of participation during intervention and follow-up, suggesting that the self-modeling intervention was effective in increasing individual participatory behavior in the classroom. © 1998 John Wiley & Sons, Inc.  相似文献   

Single-cell attachment and culture method using a photochemical reaction in a closed microfluidic system     

Jang K  Xu Y  Tanaka Y  Sato K  Mawatari K  Konno T  Ishihara K  Kitamori T 《Biomicrofluidics》2010,4(3):32208

Recently, interest in single cell analysis has increased because of its potential for improving our understanding of cellular processes. Single cell operation and attachment is indispensable to realize this task. In this paper, we employed a simple and direct method for single-cell attachment and culture in a closed microchannel. The microchannel surface was modified by applying a nonbiofouling polymer, 2-methacryloyloxyethyl phosphorylcholine (MPC) polymer, and a nitrobenzyl photocleavable linker. Using ultraviolet (UV) light irradiation, the MPC polymer was selectively removed by a photochemical reaction that adjusted the cell adherence inside the microchannel. To obtain the desired single endothelial cell patterning in the microchannel, cell-adhesive regions were controlled by use of round photomasks with diameters of 10, 20, 30, or 50 μm. Single-cell adherence patterns were formed after 12 h of incubation, only when 20 and 30 μm photomasks were used, and the proportions of adherent and nonadherent cells among the entire UV-illuminated areas were 21.3%±0.3% and 7.9%±0.3%, respectively. The frequency of single-cell adherence in the case of the 20 μm photomask was 2.7 times greater than that in the case of the 30 μm photomask. We found that the 20 μm photomask was optimal for the formation of single-cell adherence patterns in the microchannel. This technique can be a powerful tool for analyzing environmental factors like cell-surface and cell-extracellular matrix contact.  相似文献   

Significant life experiences affect environmental action: a confirmation study in eastern Taiwan     

Shih‐Jang Hsu 《Environmental Education Research》2009,15(4):497-517

Two field studies form the basis of this article. The major purposes of Study 1 were to examine significant life experiences affecting the cultivation of environmental activists in eastern Taiwan, and to reconstruct the life paths followed by those active people who engaged in effective environmental action. 40 usable autobiographical memories were collected and content‐analysed to derive 17 significant life experiences. Based on the 17 accounts, a quantitative questionnaire of 24 items on significant life experiences variables was developed for Study 2. Four hundred and thirty valid questionnaires were analysed. Eighty two respondents with a high level of environmental action were determined to be environmental activists, and 153 with a low level of environmental action were determined to be people apathetic towards environmental protection. It was found that the significant life experiences identified in Study 1 could effectively distinguish environmentally committed people from those apathetic to environmental protection. Study 2 also found that 54.6% of the variances in environmental actions could be explained by the significant life experiences.  相似文献   

试论手机媒体对新闻传播活动的影响   总被引：3，自引：0，他引：3  

周怡  姜岩 《新闻界》2009,(1):76-78

手机改变了新闻摄影与摄像,将大批受众纳入到新闻图片、影像采集者的行列中.手机给记者采访带来巨大的方便,对新闻制作提出新的要求.手机为受众带来新的媒介体验,使用户同传者的身份界限变得模糊,成为用户与新闻节目互动的工具.  相似文献   

The relative effects of university success courses and individualized interventions for students with learning disabilities     

Maureen J. Reed  Deborah J. Kennett  Tanya Lewis  Eunice Lund‐Lucas  Carolyn Stallberg  Inez L. Newbold 《高等教育研究与发展》2009,28(4):385-400

Little is known about the relative effects of post‐secondary learning services for students with learning disabilities. We compared outcomes for students with learning disabilities who selected to: (1) take an academic learning success course (course‐intervention), (2) have regular individual interventions (high‐intervention) or (3) use services only as needed (low‐intervention). Pre‐ and post‐test comparisons revealed improvements in academic self‐efficacy and academic resourcefulness for students in the course‐ and high‐intervention groups. The course‐intervention group also showed decreases in their failure attributions to bad luck and increases in their general repertoire of learned resourcefulness skills in comparison to the high‐intervention group and had significantly higher year‐end GPAs in comparison to the low‐intervention group. Here we find positive outcomes for students with learning disabilities taking a course that teaches post‐secondary learning and academic skills.  相似文献