Attaining the vision for science teaching and learning emphasized in the Framework for K‐12 Science Education and the next generation science standards (NGSS) will require major shifts in teaching practices in many science classrooms. As NGSS‐inspired cognitively demanding tasks begin to appear in more and more science classrooms, facilitating students' engagement in high‐level thinking as they work on these tasks will become an increasingly important instructional challenge to address. This study reports findings from a video‐based professional development effort (i.e., professional development [PD] that use video‐clips of instruction as the main artifact of practice to support teacher learning) to support teachers' learning to select cognitively demanding tasks and to support students' learning during the enactment of these tasks in ways that are aligned with the NGSS vision. Particularly, we focused on the NGSS's charge to get students to make sense of and deeply think about scientific ideas as students try to explain phenomena. Analyses of teachers' pre‐ and post‐PD instruction indicate that PD‐participants began to adopt instructional practices associated with facilitating these kinds of student thinking in their own classrooms. The study has implications for the design of video‐based professional development for science teachers who are learning to facilitate the NGSS vision in science classrooms. 相似文献
The introduction of qualitative modelling techniques into learning environments, and intelligent training systems, requires not just the development of tools and techniques for modelling and simulation but also some guidance on how to use qualitative models in learning environments. This paper describes the rationale behind the design of a simulation based learning environment, the Model Switching PROcess rig Demonstration System (MS‐PRODS). Three qualitative and three quantitative simulations of the behavior of the physical system have been implemented using the ITSIE tools (Scott et al, 1990). The design of the learning environment is presented from the point of view of instruction and how the models are to be used to promote learning, in particular examining the model switching mechanism. This mechanism determines how to select and sequence the presentation of models to the learner during guided explorations of the domain. A knowledge based an alysis of the domain knowledge is combined with principles derived from Cognitive Flexibility Theory (Spiro 6 Jehng, 1990) to produce a generic design for a learning environment based on multiple models. The design and implementation of the learning environment is illustrated and a sample sequence of models presented. Finally, related work such as White & Frederiksen (1990) on model progression is discussed. 相似文献
Previous research has demonstrated close relationships between working memory and children's scholastic attainment. The aim of the present study was to explore a method of improving working memory, using memory strategy training. Two hundred and fifty‐four children aged five to eight years were tested on measures of the phonological loop, visuo‐spatial sketchpad and central executive components of the multiple component model of working memory. Subgroups of children also completed tasks of following instructions and mental arithmetic in the classroom, and standardised tests of reading, arithmetic and mathematics. Half of the children then used Memory Booster, a computer game that teaches memory strategies, over a period of six to eight weeks. All the children were then retested on the memory and ability measures. The standardised tests were also administered five months later. The results revealed that working memory strategy training resulted in significant improvements in tasks assessing the phonological loop and central executive components of working memory, and tasks assessing following instructions and mental arithmetic in the classroom. However, no improvements were observed on standardised tests of reading, arithmetic or mathematics, either immediately following training or five months later. The results are discussed in terms of implications for educational practice. 相似文献
This study of the utility of evidence differs from previous studies in its use of a respondent‐generated matrix of information and sources. This matrix comprised three dimensions (expertness × trustworthiness‐acquaintanceship x information type] and was used to produce Q‐statements which subjects sorted according to a most useful‐Jeast useful criterion in three hypothetical decision‐making situations. The Q‐analysis revealed several types of persons, including: types which found directive information most useful, types which preferred unknown but competent sources, and types which depended upon sources who were known and trusted regardless of the kind of information the source offered. 相似文献
As part of a larger study, the Victoria Day Care Research Project, caregivers representing three different types of caregiving arrangements (licensed center-based day care, licensed family day care homes, and unlicensed family day care homes) were interviewed. The structured interviews of approximately 1 hour covered the following caregiver-related areas: caregiver personal, socioeconomic status (SES), and support system factors; caregiver relationships with the chldren's mothers and general attitudes towards maternal employment; caregivers' perceptions of their own programs and children they care for; and caregivers' satisfaction with their employment. From the interview data, distinctive profiles emerged for each of the three caregiving groups. The data on the three caregiver groups and their composite profiles are presented in the article. 相似文献
Academic socialization by low‐income immigrant mothers from Mainland China was investigated in two studies. Immigrant Chinese mothers of first graders (n =52; Mage = 38.69) in the United States (Study 1) and kindergartners (n =86; Mage = 36.81) in Hong Kong (Study 2) tell stories that emphasized achieving the best grade through effort more than did African American (n =39; Mage = 31.44) and native Hong Kong (n =76; Mage = 36.64) mothers, respectively. The emphasis on achievement was associated with mothers' heightened discussion on discrimination (Study 1) and beliefs that education promotes upward mobility (Study 2), as well as children's expectations that a story protagonist would receive maternal criticism for being nonpersistent in learning (Study 2). 相似文献
Past research with the Berkeley Adult Attachment Interview demonstrates that retrospectively defined earned-secures (who coherently describe negative childhood experiences) parent as effectively as do continuous-secures (who coherently describe positive childhood experiences), but manifest liabilities in the form of depressive symptomatology. This article presents data from a 23-year longitudinal study that replicate and extend prior research, testing a key premise that earned-secures so defined actually have a history of insecure attachments that change over time and/or endure consistently harsh or ineffective parenting in their youth. Discrepant with assumptions, retrospective earned-secures were not more likely than continuous-secures to have been anxiously attached in infancy and were observed in childhood and adolescence to have encountered among the most supportive and structured maternal parenting in a high-risk sample. Prospectively defined earned-secures (operationalized using participants' infant attachment classifications) did indeed go on to have success in their close relationships, many without reporting relatively high levels of internalizing distress in adulthood. 相似文献
This paper sets out to review the on-going case study debate. We do not aim to enter the qualitative/quantitative discussion, nor do we suggest that the case study is the ultimate or only form of research. We suggest that case studies should be used in conjunction with other forms of research. What is important is that the techniques selected are appropriate for any proposed research undertaking so that quantitative and qualitative strategies can meaningfully co-exist within the same research project.
We do, however, suggest that in certain sectors the case study approach is misunderstood and under-utilized. The focus of the paper is an objective discussion of a number of issues which have been raised about the case study strategy. The discussion does not assume that there is ‘one type’ of case study, rather it refers to the multitude of case study approaches which can be classified under the case study label.
In addition to a review of the case study debate and some research strategies associated with the approach, the paper discusses a number of pertinent issues which continue to generate much debate. The issues of procedure, a multi-method strategy, objectivity, generalizability and presentation are reviewed in relation to case study research.
The case study approach has weaknesses, and its share of critics, but has become an established and respected form of research. Issues involved in case study research still need to be considered as it becomes more accepted as a viable and insightful form of research. 相似文献
Lifelong learning is recognized as an important tool to reduce social exclusion, but out of the many investigations into the provision of lifelong learning in Europe none has yet sought to examine the specific situation of mental health care service users. This study examines the provision of lifelong learning for this disadvantaged group; it identifies current policies and explores the access to, and nature of, lifelong learning practices for mental health care service users in eight European countries. Data have been collected through a literature and policy review and through questionnaires completed by mental health practitioners in the eight countries. The study found broad compliance amongst the eight countries with the Lisbon policy goals on lifelong learning, but evidence of specific lifelong learning provision for mental health care service users is patchy and sporadic. The study identified the main benefits of, and the barriers to, the participation in lifelong learning for mental health care service users from the viewpoint of mental health professionals and practitioners. The implications for practice were described, and suggestions for actions were made for improving the lifelong learning provision for the target group. 相似文献