共查询到20条相似文献，搜索用时 250 毫秒
1.
Youngmin Lee David W. Nelson 《British journal of educational technology : journal of the Council for Educational Technology》2005,36(2):193-203
The purpose of this study was to investigate the effects of two types of maps (generative vs. completed) and the amount of prior knowledge (high vs. low) on well‐structured and ill‐structured problem‐solving performance. Forty‐four undergraduates who were registered in an introductory instructional technology course participated in the study. Participants were randomly assigned to two treatments that used generative and completed concept maps. Within those treatment groups, participants were differentiated by prior domain knowledge, high or low. Although the high knowledge‐generative group outperformed the other three groups on well‐structured problem‐solving performance, it did not have an effect on ill‐structured problem‐solving performance. 相似文献
2.
A challenge facing many schools, especially those in urban settings that serve culturally and linguistically diverse populations, is a disconnection between schools and students' home communities, which can have both cognitive and affective implications for students. In this article we explore a form of “connected science,” in which real‐world problems and school‐community partnerships are used as contextual scaffolds for bridging students' community‐based knowledge and school‐based knowledge, as a way to provide all students opportunities for meaningful and intellectually challenging science learning. The potential of these scaffolds for connected science is examined through a case study in which a team of fifth‐grade teachers used the student‐identified problem of pollution along a nearby river as an interdisciplinary anchor for teaching science, math, language arts, and civics. Our analysis makes visible how diverse forms of knowledge were able to support project activities, examines the consequences for student learning, and identifies the features of real‐world problems and school–community partnerships that created these bridging opportunities. © 2001 John Wiley & Sons, Inc. J Res Sci Teach 38: 878–898, 2001 相似文献
3.
This research investigated the effect of reflective discussions following inquiry‐based laboratory activities on students' views of the tentative, empirical, subjective, and social aspects of nature of science (NOS). Thirty‐eight grade six students from a Lebanese school participated in the study. The study used a pretest–posttest control‐group design and focused on collecting mainly qualitative data. During each laboratory session, students worked in groups of two. Later, experimental group students answered open‐ended questions about NOS then engaged in reflective discussions about NOS. Control group students answered open‐ended questions about the content of the laboratory activities then participated in discussions of results of these activities. Data sources included an open‐ended questionnaire used as pre‐ and posttest, answers to the open‐ended questions that experimental group students answered individually during every session, transcribed videotapes of the reflective discussions of the experimental group, and semi‐structured interviews. Results indicated that explicit and reflective discussions following inquiry‐based laboratory activities enhanced students' views of the target NOS aspects more than implicit inquiry‐based instruction. Moreover, implicit inquiry‐based instruction did not substantially enhance the students' target NOS views. This study also identified five major challenges that students faced in their attempts to change their NOS views. © 2010 Wiley Periodicals, Inc. J Res Sci Teach 47: 1229–1252, 2010 相似文献
4.
J. Huppert S. Michal Lomask R. Lazarowitz 《International Journal of Science Education》2013,35(8):803-821
Computer-assisted learning, including simulated experiments, has great potential to address the problem solving process which is a complex activity. It requires a highly structured approach in order to understand the use of simulations as an instructional device. This study is based on a computer simulation program, 'The Growth Curve of Microorganisms', which required tenth grade biology students to use problem solving skills whilst simultaneously manipulating three independent variables in one simulated experiment. The aims were to investigate the computer simulation's impact on students' academic achievement and on their mastery of science process skills in relation to their cognitive stages. The results indicate that the concrete and transition operational students in the experimental group achieved significantly higher academic achievement than their counterparts in the control group. The higher the cognitive operational stage, the higher students' achievement was, except in the control group where students in the concrete and transition operational stages did not differ. Girls achieved equally with the boys in the experimental group. Students' academic achievement may indicate the potential impact a computer simulation program can have, enabling students with low reasoning abilities to cope successfully with learning concepts and principles in science which require high cognitive skills. 相似文献
5.
The purposes of the present study were (a) to compare US and Korean 8th graders' mastery of knowledge and skills in the mathematics test of the Trends in International Mathematics and Science Study (TIMSS) 2003 using a cognitive diagnostic testing method and (b) to find links between teachers' instruction and students' mastery of mathematics knowledge and skills. The participants included 740 US and 439 Korean 8th graders who took the Booklet 3 mathematics test. The results showed substantial differences between the US and Korean students' performance in problem restructuring and reasoning, measurement, and geometry. The most helpful instructional strategy for both Korean and US students was encouraging students' independent problem solving. Reviewing, re-teaching, and clarifying content were especially effective for the US students. Implications for teaching and learning are discussed. 相似文献
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Randy K. Yerrick Elizabeth Doster Jeffrey S. Nugent Helen M. Parke Frank E. Crawley 《科学教学研究杂志》2003,40(5):443-463
Analogies have been argued to be central in the process of establishing conceptual growth, making overt connections and carryover into an intended cognitive domain, and providing a generative venue for developing conceptual understanding inherent in constructivist learning. However, students' specific uses of analogies for constructing arguments are not well understood. Specifically, the results of preservice teachers' knowledge gains are not widely studied. Although we would hope that engaging preservice science teachers in exemplary lessons would assist them in using and generating analogies more expertly, it is not clear whether or how such curricula would affect their learning or teaching. This study presents an existence proof of how preservice science teachers used analogies embedded in their course materials Physics by Inquiry. This fine‐grained analysis of small group discourse revealed three distinct roles of analogies including the development of: (a) cognitive process skills, (b) scientific conceptual understanding, and (c) social contexts for problem solving. Results suggest that preservice teachers tend to overgeneralize the analogies inserted by curriculum materials, map irrelevant features of analogies into collaborative problem solving, and generate personal analogies, which counter scientific concept development. Although the authors agree with the importance of collaborative problem solving and the insertion of analogies for preservice teachers' conceptual development, we believe much more needs to be understood before teachers can be expected to construct and sustain effective learning environments that rely on using analogies expertly. Implications for teacher preparation are also discussed. © 2003 Wiley Periodicals, Inc. J Res Sci Teach 40: 443–463, 2003 相似文献
7.
Mohammed K. Khalil Loren D. Nelson Jonathan D. Kibble 《Anatomical sciences education》2010,3(5):219-226
This study used qualitative and quantitative approaches to evaluate the effectiveness of self‐learning modules (SLMs) developed to facilitate and individualize students' learning of basic medical sciences. Twenty physiology and nineteen microanatomy SLMs were designed with interactive images, animations, narrations, and self‐assessments. Of 41 medical students, 40 students voluntarily completed a questionnaire with open‐ended and closed‐ended items to evaluate students' attitudes and perspectives on the learning value of SLMs. Closed‐ended items were assessed on a five‐point Likert scale (5 = high score) and the data were expressed as mean ± standard deviation. Open‐ended questions further evaluated students' perspectives on the effectiveness of SLMs; student responses to open‐ended questions were analyzed to identify shared patterns or themes in their experience using SLMs. The results of the midterm examination were also analyzed to compare student performance on items related to SLMs and traditional sessions. Students positively evaluated their experience using the SLMs with an overall mean score of 4.25 (SD ± 0.84). Most students (97%) indicated that the SLMs improved understanding and facilitated learning basic science concepts. SLMs were reported to allow learner control, to help in preparation for subsequent in‐class discussion, and to improve understanding and retention. A significant difference in students' performance was observed when comparing SLM‐related items with non‐SLM items in the midterm examination (P < 0.05). In conclusion, the use of SLMs in an integrated basic science curriculum has the potential to individualize the teaching and improve the learning of basic sciences. Anat Sci Educ 3: 219–226, 2010. © 2010 American Association of Anatomists. 相似文献
8.
In this study, we explore oral and written work (plays and rap songs) of students in a sixth‐grade all African‐American urban science class to reveal ways affective and social aspects are intertwined with students' cognition. We interpret students' work in terms of the meeting of various genres brought by the students and teachers to the classroom. Students bring youth genres, classroom genres that they have constructed from previous schooling, and perhaps their own science genres. Teachers bring their favored classroom and science genres. We show how students' affective reactions were an integral part of their constructed scientific knowledge. Their knowledge building emerged as a social process involving a range of transactions among students and between students and teacher, some transactions being relatively smooth and others having more friction. Along with their developing science genre, students portrayed elements of classroom genres that did not exist in the classroom genre that the teacher sought to bring to the class. Students' work offered us a glimpse of students' interpretations of gender dynamics in their classrooms. Gender also was related to the particular ways that students in that class included disagreement in their developing science genre. © 2002 Wiley Periodicals, Inc. J Res Sci Teach 39: 579–605, 2002 相似文献
9.
A model of expertise in chemistry problem solving was tested on undergraduate science majors enrolled in a chemistry course. The model was based on Anderson's Adaptive Control of Thought‐Rational (ACT‐R) theory. The model shows how conceptualization, self‐efficacy, and strategy interact and contribute to the successful solution of quantitative, well‐defined chemistry problems in the areas of stoichiometry, thermochemistry, and properties of solutions. A statistical path analysis and students' explanations supported the model and indicated that the students' problem conceptualization and chemistry self‐efficacy influenced their strategy use, which, in turn, strongly influenced their problem‐solving success. The implication of these findings for future research and developing students' expertise in chemistry problem solving is that a strategy is advantageous when it is built on a foundation of conceptual knowledge and chemistry self‐efficacy. © 2009 Wiley Periodicals, Inc. J Res Sci Teach 46: 1070–1089, 2009 相似文献
10.
Reports published since 1977 indicate that African Americans are underrepresented among Ph.D.‐holding scientists. Although researchers have identified numerous factors that correlate with career choice, they have failed to address students' reasons for choosing or not choosing science and science‐related careers. This study examines the career decisions of three African‐American college students. All three students began college aspiring toward science‐related careers. However, by the end of data collection only one student was working toward a science‐related career. Data were collected by means of eight, open‐ended, 1‐hour interviews conducted over a period of 6 months. Findings indicate that students' interest in a science‐related career is directly related to the degree to which they perceive that career as being supportive of deep‐seated life goals; and that a deeper view of the nature of science better enables students to perceive a science‐related career as supportive of life goals. © 2001 John Wiley & Sons, Inc. J Res Sci Teach 38: 599–621, 2001 相似文献
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Peggy A. Ertmer Donald A. Stepich Cindy S. York Ann Stickman Xuemei Wu Stacey Zurek Yuksel Goktas 《Performance Improvement Quarterly》2008,21(1):17-42
This study examined how instructional design (ID) experts used their prior knowledge and previous experiences to solve an ill‐structured instructional design problem. Seven experienced designers used a think‐aloud procedure to articulate their problem‐solving processes while reading a case narrative. Results, presented in the form of four assertions, showed that experts (1) narrowed the problem space by identifying key design challenges, (2) used an amalgam of knowledge and experience to interpret the problem situation, (3) incorporated a mental model of the ID process in their problem analyses, and (4) came to similar conclusions about how to respond to the situation, despite differences in their initial conceptualizations. Implications for educating novice instructional designers are discussed. 相似文献
13.
Carol A. Christensen 《教育心理学》2005,25(5):441-453
There is a strong relationship between orthographic–motor integration related to handwriting and students' ability to produce creative and well‐structured written text. This relationship is thought to be due to the cognitive load which results when attention is required by writers to write letters and words on the page. Lack of automaticity in orthographic–motor integration means that writers do not have sufficient cognitive resources to accomplish the more demanding aspects of text production such as ideation, text monitoring, and pragmatic awareness. A systematic handwriting program can significantly improve the quality of written text by young children experiencing problems with orthographic–motor integration. This study investigated the effectiveness of a handwriting program in remediating older students' problems in orthographic–motor integration and consequently enhancing their written language skills. Two groups of students in Grades 8 and 9 were provided with either practice in handwriting or daily completion of a written journal. There were no differences between the two groups at pre‐test. However, at post‐test, the handwriting group had significantly higher scores in orthographic–motor integration as well as for the length and quality of the text they wrote. 相似文献
14.
While instruction on control of variables has been shown to be effective, especially when it encourages students to focus explicitly on rules or procedures, little evidence of application to novel problems has been obtained. We hypothesized that prompting students to understand their own learning processes while doing experiments involving control of variables would allow them to activate their repertoire of knowledge and strategies and learn in a way that would enhance transfer of learning. Students were assigned to one of four versions of a computer‐based biology simulation learning environment, each employing a different type of prompt: reason justification, rule based, emotion focused, or none (control). Learning in this computer environment, college biology students designed and conducted experiments involving control of variables. Students' ability to solve both contextually similar (near transfer) and contextually dissimilar (far transfer) problems was assessed. The treatment groups performed equally well on contextually similar problems. However, on a contextually dissimilar problem, the reason justification group had significantly higher scores than the other groups. Qualitative data showed that the reason justification prompts directed students' attention to understanding when, why, and how to employ experiment design principles and strategies, and this in turn helped students to transfer their understanding to a novel problem. © 1999 John Wiley & Sons, Inc. J Res Sci Teach 36: 837–858, 1999 相似文献
15.
Glenn W. Lambie W. Bryce Hagedorn Kara P. Ieva 《Counselor Education & Supervision》2010,49(4):228-246
Counselors are required to have high levels of social‐cognitive development, significant knowledge regarding ethical and legal practice, and sound ethical decision‐making processes to provide effective and ethical services to their clients. This study investigated the effect of two counseling ethics courses on 64 master's‐level counselor education students' levels of social‐cognitive development, ethical and legal knowledge, and ethical decision making. Students' ethical and legal knowledge scores increased significantly, and precourse social‐cognitive maturity predicted postcourse ethical and legal knowledge scores. Implications for counselor education and development are discussed. 相似文献
16.
Uri Zoller 《科学教学研究杂志》1999,36(5):583-596
A major objective of the current reform in science and chemistry education is the development of students' higher‐order cognitive skills (HOCS). A major question of concern is how to improve practice, via appropriate teaching strategies, to achieve the HOCS‐oriented instruction‐learning goals of college science and chemistry education, within the current reality of large, heavily populated chemistry classes. This article presents an action‐oriented research account of HOCS‐oriented teaching of organic chemistry to freshman and sophomore science majors in small and large classes at a relatively small and large university, respectively, within a purposed attempt of overall course design reform. Inquiry‐oriented class discussions, students' active involvement in the learning process, HOCS‐type examinations, and grading of exams by both peers and course graduates were successfully applied in both the small and large classes, demonstrating the feasibility and benefits to students of interactive, HOCS‐oriented pedagogies within the reality of both class sizes. The messages are that (a) there are implementable, appropriate teaching strategies for the development of students' HOCS abilities within the reality of large lecture sections of college chemistry courses; and (b) chemistry educators should take the trouble of working harder toward the attainment of this superordinate goal despite limiting constraints. © 1999 John Wiley & Sons, Inc. J Res Sci Teach 36: 583–596, 1999 相似文献
17.
Systems thinking is regarded as a high‐order thinking skill required in scientific, technological, and everyday domains. However, little is known about systems thinking in the context of science education. In the current research, students' understanding of the rock cycle system after a learning program was characterized, and the effect of a concluding knowledge integration activity on their systems thinking was studied. Answers to an open‐ended test were interpreted using a systems thinking continuum, ranging from a completely static view of the system to an understanding of the system's cyclic nature. A meaningful improvement in students' views of the rock cycle toward the higher side of the systems thinking continuum was found after the knowledge integration activity. Students became more aware of the dynamic and cyclic nature of the rock cycle, and their ability to construct sequences of processes representing material transformation in relatively large chunks significantly improved. Success of the knowledge integration activity stresses the importance of postknowledge acquisition activities, which engage students in a dual process of differentiation of their knowledge and reintegration in a systems context. We suggest including such activities in curricula involving systems‐based contents, particularly in earth science, in which systems thinking can bring about environmental literacy. © 2003 Wiley Periodicals, Inc. J Res Sci Teach 40: 545–565, 2003 相似文献
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Joanna C. Dunlap 《Performance Improvement Quarterly》2005,18(1):5-33
ABSTRACT In a climate of continual change and innovation, lifelong learning is a critical professional development objective which has a direct impact on organizations' effectiveness and ability to compete and innovate. To help learners continually upgrade their skills and knowledge so they can effectively address emerging organizational and professional needs and opportunities, educators must prepare learners for their professions using teaching methodologies that develop learners' capacity for and disposition toward lifelong learning. Problem‐based learning (PBL) is one such method. PBL uses professional problems of practice as a starting point, stimulus, and focus for student activity, and one of PBL's stated educational outcomes is students' use of lifelong learning skills. This study examined the changes in students' use of lifelong learning skills while participating in a PBL project. Twenty‐six undergraduate university computer science students completed a 15‐week C++ programming course. Using guided reflective journal responses as process data, students were observed to increase their application of lifelong learning skills during their PBL experience. Design and research recommendations are shared. 相似文献
20.
The notion of design thinking is becoming more concrete nowadays, as design researchers and practitioners study the thinking processes involved in design and employ the concept of design thinking to foster better solutions to complex and ill‐defined problems. The goal of the present research is to develop a cognitive activity‐based design methodology for novice visual communication designers, which will be achieved by mapping the findings from a comparative analysis of novice and expert visual communication designers' thinking processes onto the prospective methodology. Under the proposed methodology, activity modes take place in a chronological flow under specific guidelines involving various forms of design cognition. The guidelines correlate to design phases from problem structuring to detailed design and to the cognitive processes of divergent and convergent thinking. The methodology gives open‐ended instruction to novices endeavouring to proceed with the design process, solve complex design problems and make better design decisions. This research has value for its unique approach to methodology development. Furthermore, the proposed methodology provides guidance for more effective cognitive activities during the design process and holds potential for implementation in design education due to its focus on the needs of novice designers. 相似文献