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1.
现代心理语言学理论视阅读为一个十分复杂的心理语言处理过程。这个过程包含两个不同层次的信息处理模式:基于语言材料,处理句子层并列关系及从属关系信息的自下而上的微观信息处理模式;基于内容背景知识,处理篇章层中心信息的自上而下的宏观信息处理模式。这两个信息处理模式在阅读过程中相互作用,但起决定作用的是后者。图式论认为,词汇知识结构即语言图式主要作用于自下而上的微观信息处理过程,内容知识图式和篇章结构图式主要作用于自上而下的宏观信息处理过程。在阅读过程中,不具备、不能激发及错误使用任何一种图式都会导致阅读理解错误。  相似文献   

2.
A knowledge base system INCAP(Integration of Catalyst Activity Patterns)for selecting catalyst components has been developed by decomposing the catalyst designproblem into 5 easily solved sub-problems and by building up a weighted experimental es-timation model of catalytic activity for application of activity data.The INCAP was ap-plied to the design of catalysts for oxidative dehydrogenation of ethylbeneze and the re-sults are in agreement with the experimental ones.The characters of INCAP are analyzedfrom the view of design expert system.  相似文献   

3.
Abstract

With more children spending the greater part of their waking hours in preschool settings today than they did years ago, teachers play an even more critical role in providing daily literacy experiences that many children of earlier generations received at home. The article focuses on the critical role that preschool teachers play in supporting children's early literacy development and presents an instructional framework to help guide early literacy teaching. The framework is based on Vygotsky's learning theory, which emphasizes the nature and importance of social interactions in instruction, particularly between adult and child. We present activity‐embedded assessments that preschool teachers can use to observe and document children's emerging literacy concepts and skills, and describe key teaching actions that scaffold learning of new concepts. In closing, we offer five principles to guide preschool teachers in planning and implementing appropriate activities to promote young children's literacy development. Sample documentation forms are included in the appendices.  相似文献   

4.
There is mounting research evidence that contests the metaphysical perspective of knowing as mental process detached from the physical world. Yet education, especially in its teaching and learning practices, continues to treat knowledge as something that is necessarily and solely expressed in ideal verbal form. This study is part of a funded project that investigates the role of the body in knowing and learning mathematics. Based on a 3-week (15 1-h lessons) video study of 1-s grade mathematics classroom (N = 24), we identify 4 claims: (a) gestures support children’s thinking and knowing, (b) gestures co-emerge with peers’ gestures in interactive situations, (c) gestures cope with the abstractness of concepts, and (d) children’s bodies exhibit geometrical knowledge. We conclude that children think and learn through their bodies. Our study suggests to educators that conventional images of knowledge as being static and abstract in nature need to be rethought so that it not only takes into account verbal and written languages and text but also recognizes the necessary ways in which children’s knowledge is embodied in and expressed through their bodies.  相似文献   

5.
The prototype system Object-Oriented Computer Aided Process Planning(OOCAP),which aims at simulating machine process planning for designed componentsby constructing a knowledge based system in an Object-Oriented environment Smalltalkand is implemented in PS/2 80,is presented in this paper.The integration of rules,factsand operations in objects is the key concept in the system.Additionally,the system simu-lares machining processes and shows the whole procedure from selecting materials to get-ring products with animations.  相似文献   

6.
This study explored the process of physics teaching assistants’ (TAs) PCK development in the context of teaching a new undergraduate introductory physics course. Matter and Interactions (M&I) has recently adopted a new introductory physics course that focuses on the application of a small number of fundamental physical principles to the atomic and molecular nature of matter. The purpose of this study is to describe how the PCK of physics TAs in the M&I course was developed and enacted. Data collection began during the TA preparation workshop that was held before the semester and continued during the recitation and laboratory classes that the TAs taught during the semester. Through a qualitative, multiple case study research design, data were collected from multiple sources: non-participant observations, digitally recorded video, semi-structured interviews, TAs’ written reflections, and researchers’ field notes. Data analysis consisted of cross-case and within-case analyses. Data were analyzed using a constant comparative method. After data analysis, 2 main themes emerged related to the development of TA’s PCK: (a) TAs’ PCK developed from propositional knowledge to personal practical knowledge and (b) the process of knowledge development consisted of 3 phases: accepting, actualizing, and internalizing. The results of this study will not only contribute to the quest to identify the nature of professional knowledge of science teaching but also help guide preparation for innovative introductory physics courses and other college level science courses in the future.  相似文献   

7.
ＩＮＴＲＯＤＵＣＴＩＯＮＴｏｂｅｇｉｎａｄｉｓｃｕｓｓｉｏｎｏｎｍａｎａｇｅｍｅｎｔａｎｄｌａｂｏｒｒｅｌａｔｉｏｎｓｒｅｑｕｉｒｅｓａｎｉｎ ｄｅｐｔｈｉｎｑｕｉｒｙｉｎｔｏｔｈｅｍａｎｙｆａｃｔｏｒｓｔｈａｔａｆｆｅｃｔｔｈｅｒｅｌａｔｉｏｎｓｈｉｐ .Ａｔｆｉｒｓｔｇｌａｎｃｅ,ｔｈｉｓｆｉｅｌｄｍａｙａｐｐｅａｒｔｏｂｅｒｅｌａｔｉｖｅ ｌｙｔｒａｎｓｐａｒｅｎｔ;ａｌｔｈｏｕｇｈｔｈｅｒｅａｒｅａｃｔｕａｌｌｙｎｕ ｍｅｒｏｕｓｆａｃｔｏｒｓａｆｆｅｃｔｉｎｇｔｈｅｒｅｌａｔｉｏｎｓｈｉｐ .…  相似文献   

8.

In order to teach mathematics effectively, mathematics teachers need to have a sound mathematical knowledge, but what constitutes sound mathematical knowledge for teaching is subject to debate. This paper is an attempt to unpack what constitutes teacher knowledge of the concept of a function which is a unifying idea in the mathematics curriculum. The central components of the framework, which will be elaborated on in this paper, are: teachers’ subject matter knowledge, teachers’ pedagogical content knowledge, teachers’ technological pedagogical knowledge, technological content knowledge, and technological pedagogical content knowledge in relation to the concept of a function. The framework is informed by Shulman’s (Educational Researcher 15:4–14, 1986) Types of Teachers Knowledge Framework, Ball, Bass &; Hill 29:14–17, 20–22, 43–46 (2005) Mathematical Knowledge for Teaching Framework, and Mishra &; Koehler’s (Teachers College Record 108:1017–1054, 2006) Technological Pedagogical Content Knowledge (TPACK) framework.

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9.
In order to teach mathematics effectively, mathematics teachers need to have a sound mathematical knowledge, but what constitutes sound mathematical knowledge for teaching is subject to debate. This paper is an attempt to unpack what constitutes teacher knowledge of the concept of a function which is a unifying idea in the mathematics curriculum. The central components of the framework, which will be elaborated on in this paper, are: teachers’ subject matter knowledge, teachers’ pedagogical content knowledge, teachers’ technological pedagogical knowledge, technological content knowledge, and technological pedagogical content knowledge in relation to the concept of a function. The framework is informed by Shulman’s (Educational Researcher 15:4–14, 1986) Types of Teachers Knowledge Framework, Ball, Bass & Hill 29:14–17, 20–22, 43–46 (2005) Mathematical Knowledge for Teaching Framework, and Mishra & Koehler’s (Teachers College Record 108:1017–1054, 2006) Technological Pedagogical Content Knowledge (TPACK) framework.  相似文献   

10.
In-depth interviews guided by video elicitations examined 30 high school science teachers’ conceptions of technology and by extension how these conceptions reflected dimensions of nature of technology. Altogether, 64 % of the teachers characterized their schools and departments as aggressive–moderate adopters with generous access and support for technological tools. In comparison, 30 % noted that their school lagged behind due to funding and lack of infrastructure. Definitions of technology revealed emphasis on technology as artifact, overwhelming optimism on the purpose and function of technology to improve and make life easier and as representation of advancement in civilization. In tandem, teachers were most drawn to two video scenarios—medical and everyday tool videos because it reflected notions of progression and expectations of future changes; heightened awareness of the multitude of available technologies; and perceived relevance with classroom content. Perhaps most telling in these findings was that few teachers were drawn to the classroom video scenario, and only three teachers highlighted the technology–science–school science connection. These findings have implications for holistic understandings of technologies, which may inform how science teachers perceive and enact technologies in their science classrooms.  相似文献   

11.
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12.
We used four different methods to determine the best means of assessing over 200 preservice elementary teachers’ growth in knowledge of models and their use in K-8 classrooms while participating in the Science Capstone course that focused on the unifying themes of models in science. Each assessment method probed a different aspect of models (from growth in scientific use to need for greater emphasis on the role and use of models) and each used a different method of gathering student responses (Likert-type responses to concept maps). We determined that growth in student knowledge was demonstrated by all instruments, but some instruments were more useful than others for determining preservice elementary teachers’ prior knowledge as well as growth in knowledge of models necessary for K-8 teachers.  相似文献   

13.
The present study investigated whether gender differences were present on the confidence judgments made by 8th grade Taiwanese students on the accuracy of their responses to acid–base test items. A total of 147 (76 male, 71 female) students provided item-specific confidence judgments during a test of their knowledge of acids and bases. Using the correctness of the answer responses, a confidence rating score, an unweighted rating score, and a relative confidence rating score were calculated for each respondent. The correlations between the boys and girls for each score area showed girls as scoring higher than boys in their knowledge of acids and bases, were more confident in this knowledge, and more willing to express different levels of confidence among the test items.  相似文献   

14.
This article presents the findings of an international collaborative investigation into preservice teachers’ views on the nature of scientific knowledge development with respect to six elements: observations and inferences, tentativeness, scientific theories and laws, social and cultural embeddedness, creativity and imagination, and scientific methods. A total of 640 preservice teachers, 209 from the United States, 212 from China, and 219 from Turkey, participated in the study. The survey “Student Understanding of Science and Scientific Inquiry (SUSSI)”, having a blend of Likert-type items and related open-ended questions, was used to gain a fuller understanding of the preservice teachers’ views of the nature of scientific knowledge development. Across the three countries, the participants demonstrated better understanding of the tentative NOS aspect but less understanding of the nature of and relationship between scientific theories and scientific laws. The Chinese sample scored highest on five of the six Likert sub-scales, the USA sample demonstrated more informed views on observation and inference, and the Turkish preservice teachers possessed relatively more traditional views in all six NOS aspects. Conclusions and limitations of the present study as well as implications and recommendations for future studies, are also discussed.  相似文献   

15.
The conceptual knowledge of science processes possessed by University of Botswana science students and senior secondary school science teachers was sought through a three-part questionnaire. One part requested demographic data of subjects, the second part asked them to select their level of familiarity with the processes, and the third part probed their conceptual definitions of the science processes. The definitions were scored as incorrect, partially correct and correct on an ordinal scale. Statistical analysis was done using Spearman rho correlation and one sample t test. The findings revealed that the science teachers did not have sufficient conceptual knowledge of science processes to help their students to understand in a meaningful way; both students’ and teachers’ views of their familiarity of science processes did not corroborate their demonstrated ability to provide acceptable conceptual definitions of the processes; there was no association between students’ and teachers’ conceptions of the science processes; and if conceptual knowledge of science processes was demanded, the entering students, who were the immediate graduates of the senior secondary schools, might not have enough to pursue tertiary level science courses. It is suggested that both conceptual and operational knowledge of science processes be required at secondary and tertiary levels of science education.  相似文献   

16.
This study focuses on teacher learning of student thinking through grading homework, assessing and analyzing misconceptions. The data were collected from 10 teachers at fifth?Ceighth grade levels in the USA. The results show that assessing and analyzing misconceptions from grading homework is an important approach to acquiring knowledge of students?? thinking. By engaging in the inquiry process of the 4 steps of identifying errors, analyzing reasons for the errors, designing approaches for correction, and taking action for correction, the teachers made obvious progress in their knowledge of students?? thinking, understood the difficulties and challenges their students had in learning mathematics, and enhanced their pedagogical content knowledge.  相似文献   

17.
In this study, 241 young and middle‐aged adult college students completed the Aging Sexuality Knowledge and Attitude Scale, and provided information about their demographic and grandparental relationship qualities. Findings showed that greater age was associated with increased knowledge of elderly sexuality. Both the presence of contact and greater than average perceptions of closeness with at least one grandparent were predictive of more permissive attitudes toward elderly sexuality. Among the total sample, greater knowledge was related to more permissive attitudes toward elderly sexuality. However, the presence of contact with at least one grandparent moderated this relationship; young adults without grandparental contact presented a nonsignificant knowledge /attitude relationship. These findings suggest that future studies of younger age cohorts’ attitudes toward elderly sexuality should assess grandparental contact and relationship characteristics, as well as general demographic information such as chronological age. Health‐care educators also may need to reconsider the commonly held assumption that greater knowledge of elderly sexuality is associated exclusively with more permissive attitudes.  相似文献   

18.
This paper examines upper elementary and middle school teachers’ learning of mathematics and science content, how their perceptions of their disciplines and learning of that discipline developed through content-rich learning experiences, and the differences and commonalities of the teachers’ learning experiences relative to content domain. This work was situated within a larger professional development (PD) program that had multiple, long-term components. Participants’ growth occurred in 4 primary areas: knowledge of content, perceptions of the discipline, perceptions about the learning of the discipline, and perceptions regarding how students learn content. Findings suggest that when embedded within an effective professional development context, content can be a critical vehicle through which change can be made in teachers’ understandings and perceptions of mathematics and science. When participants in our study were able to move beyond their internal conflicts and misunderstandings, they could expand their knowledge and perceptions of content and finally bridge to re-conceptualize how to teach that content. These findings further indicate that although teachers involved in both mathematics and science can benefit from similar overall PD structures, there are some unique challenges that need to be addressed for each particular discipline group. This study contributes to what we understand about teacher learning and change, as well as commonalities and differences between teachers’ learning of mathematics and science.  相似文献   

19.
This study aimed to: (a) understand practicing teachers’ knowledge of model functions and modeling processes, (b) compare the similarities and differences between the knowledge of science and non-science major teachers, and (c) explore the possible reasons for the similarities and differences between the knowledge of these 2 groups. A 4-point Likert scale questionnaire was developed and used to measure the knowledge of 187 practicing elementary school teachers (94 science majors and 93 non-science majors) on model functions and modeling processes. The author selected 10 target teachers to conduct think-aloud interview and to explore their ranking. One month after completing the questionnaire, 28 volunteer teachers were selected for a follow-up interview to better understand the reasons for their responses. The results show that these teachers tend to agree or strongly agree with the items about model functions and modeling processes. The only significant difference between science and non-science majors was for the item “generating new ideas.” Qualitative analyses of the follow-up interviews and think-aloud results showed that teacher education and professional development did not focus on understanding and using models. Science-major teachers tended to formulate their responses with reference to specific models, while the non-science major teachers’ responses contained acquiescence bias. Finally, implications for science education are discussed.  相似文献   

20.
Teacher education systems worldwide are confronted with the essential question of how to foster both future teachers’ theoretical and practical knowledge and to adequately enable future teachers to connect their theoretical and practical knowledge for teaching. This article investigates how future teachers acquire general pedagogical knowledge (GPK) as a central component of teacher knowledge during initial teacher education, exemplified by pre-service teachers in Germany, where initial teacher education is divided into a first phase with a heavy focus on theoretical, academic study, and a second phase where future teachers learn how to apply their theoretical knowledge in the classroom. Data from teacher knowledge studies Teacher Education and Development Study in Mathematics and Längsschnittliche Erhebung pädagogischer Kompetenzen von Lehramtsstudierenden/Longitudinal Survey of Student Teachers’ Pedagogical Competencies are used to compare future teachers’ GPK at different teacher education stages (the beginning, after 2 years, and end of training). Findings show the more advanced future teachers are in the course of their initial teacher education, the better they perform in the test measuring GPK. When analyzing subscales of the test measuring cognitive dimensions of GPK, as would be expected declarative-conceptual knowledge (measured by cognitive dimensions “recall” and “understand/analyze”) was gained predominantly during the theoretical study (first phase), whereas future teachers who had additionally passed through the practical second phase performed much better on the practical knowledge test subscale (measured by the cognitive dimension “generate”). Research findings are discussed with regard to the development of teacher expertise during initial teacher education, and recommendations for future policy directions with respect to teacher education are given.  相似文献   

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