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1.
This study was designed to theoretically articulate and empirically assess the role of computer scaffolds. In this project, several examples of educational software were developed to scaffold the learning of students performing high level cognitive activities. The software used in this study, Artemis, focused on scaffolding the learning of students as they performed information seeking activities. As 5th grade students traveled through a project-based science unit on photosynthesis, researchers used a pre-post design to test for both student motivation and student conceptual understanding of photosynthesis. To measure both variables, a motivation survey and three methods of concept map analysis were used. The student use of the scaffolding features was determined using a database that tracked students’ movement between scaffolding tools. The gain scores of each dependent variable was then correlated to the students’ feature use (time and hits) embedded in the Artemis Interface. This provided the researchers with significant relationships between the scaffolding features represented in the software and student motivation and conceptual understanding of photosynthesis. There were a total of three significant correlations in comparing the scaffolding use by hits (clicked on) with the dependent variables and only one significant correlation when comparing the scaffold use in time. The first significant correlation (r = .499, p < .05) was between the saving/viewing features hits and the students’ task value. This correlation supports the assumption that there is a positive relationship between the student use of the saving/viewing features and the students’ perception of how interesting, how important, and how useful the task is. The second significant correlation (r = 0.553, p < 0.01) was between the searching features hits and the students’ self-efficacy for learning and performance. This correlation supports the assumption that there is a positive relationship between the student use of the searching features and the students’ perception of their ability to accomplish a task as well as their confidence in their skills to perform that task. The third significant correlation (r = 0.519, p < 0.05) was between the collaborative features hits and the students’ essay performance scores. This correlation supports the assumption that there is a positive relationship between the student use of the collaborative features and the students’ ability to perform high cognitive tasks. Finally, the last significant correlation (r = 0.576, p < 0.01) was between the maintenance features time and the qualitative analysis of the concept maps. This correlation supports the assumption that there is a positive relationship between the student use of the maintenance features and student conceptual understanding of photosynthesis. This material is based upon work supported by the National Science Foundation (REC9980055). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.  相似文献   

2.
A variety of handheld applications and curricular materials have been developed to support inquiry science learning in recent years, but there are few handheld-supported assessment activities available to teachers. In Project WHIRL, researchers from SRI International worked in partnership with teachers from Beaufort County School District (SC) to develop a suite of handheld software applications that could be used to support classroom assessment in upper elementary and middle school science classrooms. In this paper, we will analyze results from a field trial conducted in 2003–2004 with 18 teachers in the district, focusing on how teachers’ enactment of handheld-supported assessment activities altered the frequency and quality of their assessment practices.This material is based in part on work supported by the National Science Foundation under Grant Number REC-0126197. Any opinions, findings, conclusions, or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.  相似文献   

3.
Despite issues of fragmentation, isolation, and disconnection from the university associated with the student teaching field experience, the field experience plays a critical role in teacher education. In this article, the authors provide an overview of eSupervision, a technology-based innovation to improve the student teaching field experience by using cognitive apprenticeship as a framework for its design. They present findings from a pilot study that focused on the effectiveness of the cognitive apprenticeship and technology design elements. Using qualitative methods to analyze interviews of the participants, they found eSupervision functioned to support a cognitive apprenticeship through modeling, scaffolding learning, coaching, and providing opportunities for articulation and reflection within a community of learners. The authors conclude with suggestions for implementation and further research.  相似文献   

4.
This article is based on a paper which received the “Innovations in Teaching Science Teachers” award at the 1995 meeting of the Association for the Education of Teachers in Science. The award is made possible by Delta Education. This material is based upon work supported in part by a grant from the National Science Foundation (Grant No. 9253170). Any opinions, findings, and conclusions or recommendations expressed in this article are those of authors and do not necessarily reflect the views of the National Science Foundation.  相似文献   

5.
We use data from the 1990/1994 Beginning Post-Secondary Survey to determine whether the factors associated with long-term attrition from higher education differ for students who initially enrolled part-time as compared to for students who initially enrolled full-time. Using a two-stage sequential decision model to analyze the initial enrollment intensity decision jointly with attrition, we find no evidence of correlation in the unobservables that necessitates joint estimation, but substantial evidence that the factors associated with attrition differ by initial enrollment status. The timing of initial enrollment, academic performance, parental education, household characteristics, and economic factors had a substantially greater impact on those initially enrolled full-time, while racial and ethnic characteristics had a greater impact on those initially enrolled part-time. The results of our study suggest that separate specifications are necessary to identify at-risk full-time as compared with at-risk part-time students. The data employed here were generated while working under a grant supported in part by the Association for Institutional Research, the National Center for Education Statistics, and the National Science Foundation under the Association for Institutional Research 1999 Improving Institutional Research in Post-secondary Educational Institutions Grant Program. The Spencer Foundation Small Grants program provided funding for the analysis. Leslie Stratton gratefully acknowledges additional support from a 2001 Faculty Excellence Award from Virginia Commonwealth University. Referees from the 2005 Southern Economic Association meetings and from Research in Higher Education provided very helpful comments. Any opinions, findings, conclusions, or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the Spencer Foundation, the Association for Institutional Research, the National Center for Education Statistics, or the National Science Foundation.  相似文献   

6.
There are many evidences of motivational and educational benefits from the use of learning software. However, there is a lack of study with regards to the teaching of creative writing. This paper aims to bridge the following gaps: first, the need for a proper framework for scaffolding creative writing through learning software; second, the lack of technical scaffolding in creative writing learning software; third, the need for customizable learning software that requires little programming knowledge; and fourth, personalized learning. To develop our initial framework, Merrill??s First Principles of Instruction is used as pedagogical scaffold and story setting, characters and story structure as component-based technical scaffolds. These were tested in a low-fidelity prototype. User testing indicates an increase in creativity, improvement in story development, clarity of ideas and language skills. We also derive two design principles, i.e. identity and interactivity. Based on these findings, a high-fidelity prototype, named Storyworld, is developed. T-test analyses on results indicate significant improvement in overall creative writing skills, as well as grammar, structure and creativity. The prototype utilizes component-based design in the technical scaffolds, which is encapsulated in a tidy framework that can be personalized for individual learning needs. Our most important contribution is a proper framework combining technical scaffolds and pedagogical scaffolds that not only makes learning more effective and motivating for students, but is also cost-effective in redesigning and personalizing lessons and systems.  相似文献   

7.
The cognitive load and learning effects of dual-code and interactivity—two multimedia methods intended to promote meaningful learning—were examined. In Experiment 1, college students learned about the causal chain of events leading to the process of lightning formation with a set of words and corresponding pictures (Group WP), pictures (Group P), or words (Group W). Some students were presented with the organized causal chain of events to study, whereas others were given a self-organization task. Consistent with a cognitive theory of multimedia learning, Condition WP was the highest in instructional efficiency for retention and transfer. However, contrary to our predictions, having students organize the multimedia materials was detrimental to transfer. Two follow-up experiments tested the hypotheses that the negative effects of interactivity were due to students' lack of time control (Experiment 2) and the form of feedback (Experiment 3). The findings showed that interactivity was effective when students were asked to evaluate their answers before receiving corrective feedback from the system. This research was supported by the CAREER 0238385 grant from the National Science Foundation. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation. Casey Frechette and Paul Gibson created the multimedia materials used in these studies.  相似文献   

8.
This material is based upon work supported in part by a grant from the National Science Foundation California State University Student Teaching Development Project (DOE-9250027) and the W. M. Keck Foundation. Any opinions, findings, and conclusions or recommendations expressed in this article are those of the authors and do not necessarily reflect the views of the funding ordanizations.  相似文献   

9.
Proportional reasoning: A review of the literature   总被引：2，自引：0，他引：2  
This paper presents a review of the research on proportional reasoning. Methodologies used in proportional reasoning studies are presented first. The discussion is then organized around the following topics: strategies use to solve proportion problems, including erroneous strategies; factors that influence performance on proportion problems, both task-related and subject-related; training studies. The discussion is accompanied by suggestions for educational and research applications. This paper was supported by the National Science Foundation Grant No. SED 79-18962. Any opinions, findings and conclusions expressed in this report are those of the authors and do not necessarily reflect the views of the National Science Foundation. The authors would like to express their appreciation to Elizabeth K. Stage and Joan Heller for comments on an earlier draft of this paper.  相似文献   

10.
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11.
We contrast the current science education reform effort with the reforms of the 1960s and suggest how the current effort could be enhanced. We identify insights from recent research that we believe can inform the reform process, in particular, to reach all science students and also impart a cohesive view of science. We propose an alternative models view of scientific explanation and show how this view would contribute to reforms of (1) course goals, (2) social aspects of science learning, (3) instructional practices, and (4) roles for technology.This paper summarizes discussions and debates that the authors have had over the last few years. The dialogue stems, in part, from our joint participation in the American Educational Research Association Special Interest Group on Education in Science and Technology (AERA SIG:EST) leadership. This paper communicates the spirit of our thinking and does not necessarily reflect the view of SIG:EST, or any other organization.We gratefully acknowledge the support of National Science Foundation Grant MDR-9253462 in work related to this paper. We appreciate helpful comments from Eileen Lewis and the Computer as Learning Partner group.This material is based upon research supported by the National Science Foundation under grant RED-9155744. Any opinions, findings, and conclusions or recommendations expressed in this publication are those of the authors and not necessarily reflect the views of the National Science Foundation.  相似文献   

12.
This article received the Innovations in Teaching Science Teachers award at the 1996 meeting of the Association for the Education of Teachers in Science. The award is made possible by Delta Education.This material is based upon work supported by the National Science Foundation (Grant No. TPE-9050015). Any opinions, findings, and conclusions or recommendations expressed in this article are those of the authors and do not necessarily reflect the views of the National Science Foundation.  相似文献   

13.
This material is based upon work supported in part by a grant from the National Science Foundation (Grant No. HRD 945-0022). Any opinions, findings, and conclusions or recommendations expressed in this article are those of the author and do not necessarily reflect the views of the National Science Foundation.  相似文献   

14.
This article received the Implications of Research for Educational Practice award at the 1996 meeting of the Association for the Education of Teachers in Science. The award is made possible by Carolina Biological Supply. The article was published in The American Biology Teacher, April 1994, pp. 216–220, and is reprinted with their permission.This material is based upon work supported by the National Science Foundation (Grant No. TPE-9050015). Any opinions, findings, and conclusions or recommendations expressed in this article are those of the authors and do not necessarily reflect the views of the National Science Foundation.  相似文献   

15.
The outcomes of two studies reported here indicate that the teacher inservice workshops, combined with activity-based science lessons, affected students' attitudes and perceptions about electricity. Australian and U.S. studies produced different patterns explored and explained in the paper.This material is based upon research supported by the National Science Foundation under grant MDR-88-50570 in the United States and supported by a grant from the Special Projects Program of the Commonwealth Schools Commission in the Education of GirlsDD section of Projects of National Significance in Australia. Any opinions, findings and conclusions or recommendations expressed in this paper are those of the authors and do not necessarily reflect the views of the National Science Foundation or the Commonwealth Schools Commission.  相似文献   

16.
This material is based upon work supported in part by grants from the National Science Foundation (Grant No. TPE-8955230), the American Chemical Society (Contract No. ESI-9353374), and the Eisenhower Title II funds (Grant No. 524-2 and others). Any opinions, findings, conclusions, and/or recommendations expressed in this article are those of the authors and do not necessarily reflect those of the granting organizations.  相似文献   

17.
In response to the calls to improve and deepen scientific understanding and literacy, considerable effort has been invested in developing sustainable technology-enhanced learning environments to improve science inquiry. Research has provided important guidance for scaffolding learning in mathematics and science. However, these reports have provided relatively little insight into how the different types of scaffolds can (or should) be implemented in dynamic, everyday classroom settings. In this qualitative case study, we examined how students solve scientific problems in technology-enhanced classrooms and how peer-, teacher-, and technology-enhanced scaffolds influenced student inquiry. The results indicated that students manifested distinct inquiry patterns when solving scientific problems and integrated different types of scaffolds to facilitate inquiry activities. These findings suggest that to support scientific inquiry in problem-solving contexts, technology-enhanced scaffolds are effective when supported by clear project goals, relevant evidence, peer- and teacher-assessments, and exemplars of knowledge articulation.  相似文献   

18.
The purposes of this study are to examine young children’s explanations of floating and sinking and to investigate how scaffolding strategies provided by a tutor could promote their scientific understandings. Fifteen 4-year-olds and fifteen 5-year-olds from a public kindergarten in northern Taiwan participated in this study. The children were interviewed before and after an instructional intervention to examine their understandings about how the weight, volume, and material of an object are related to sinking and floating. During the intervention, children manipulated objects made of different materials and were assigned to one of the three groups: scaffolding-material (provided with teaching scaffolding and allowed to see the materials of the objects), scaffolding (teaching scaffolding only), and material groups (seeing the materials only). In the first two groups, 16 teaching strategies based on six scaffolding principles were employed. Analyses of interviews showed that before the intervention, the 4-year-olds seemed to have a variety of explanations for sinking and floating and a majority of the 5-year-olds used weight as an explanation for floatation. After the intervention, both 4- and 5-year-olds in the scaffolding-material and scaffolding groups improved their understandings of floating and sinking. Particularly, three out of five 5-years-olds in the scaffolding-material group related the material of an object to its buoyancy and generalized their explanations to the objects made of the same material. The findings suggest that manipulative experiences alone might not be enough for children to further their understandings about floatation and that combining teaching scaffolding with children’s perceiving of the materials of objects is more effective. This study provides insight into how to support young children to learn science through effective teaching strategies.  相似文献   

19.
Conclusion The most important finding from this study is that if one adheres to the guidelines from the literature on staff development and educational change, teachers can and will change their teaching behaviors. It is very easy, however, to underestimate the time and resources required to implement change in schools. Even a seemingly simple change such as increasing use of educational computing, which teachers can implement in their individual classrooms without an overhaul of schools, is immensely complex and difficult. Helping teachers and schools change requires a systematic effort, with intensive on-going support over a period of three or more years. Science educators, school leaders, and the public must learn that school improvement is not an event but a continual process of renewal and refinement. This study demonstrates the importance of allocating resources to staff development and implementation along with those for curriculum development. Fortunately, the National Science Foundation has recognized the importance of implementation in school improvement by requiring that implementation be an integral part of all curriculum development projects it funds. As Hall (1986) said, “It is not enough to build pretty boxes; what is important is to get the boxes used.” This article is based on work supported by the National Science Foundation under Grant No. MDR-8470061. Any opionions, findings, and conclusions or recommendations expressed in this publication are those of the authors and do not necessarily reflect the views of the National Science Foundation.  相似文献   

20.
This article explores the effect of computerized scaffolding with different scaffolds (structuring vs. problematizing) on intra-group metacognitive interaction. In this study, we investigate 4 types of intra-group social metacognitive activities; namely ignored, accepted, shared and co-constructed metacognitive activities in 18 triads (6 control groups; no scaffolds and 12 experimental groups; 6 structuring scaffolds and 6 problematizing scaffolds). We found that groups receiving scaffolding showed significantly more intra-group interactions in which the group members co-construct social metacognitive activities. Groups receiving problematizing scaffolds showed significantly less ignored and more co-constructed social metacognitive interaction compared to groups receiving structuring scaffolds. These findings indicate that scaffolding positively influenced the group members’ intra-group social metacognitive interaction. We also found a significant relation between students’ participation in intra-group social metacognitive interaction and students’ metacognitive knowledge. Twelve percent of the variance in students’ metacognitive knowledge was explained by their participation in intra-group shared social metacognitive interaction. Therefore, future research should consider how to design scaffolds that elicit intra-group social metacognitive interaction among group members to enhance the development of students’ metacognitive knowledge.  相似文献   

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