首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献，搜索用时 343 毫秒
1.
While many researchers in science education have argued that students’ epistemological understanding of models and of modelling processes would influence their cognitive processing on a modelling task, there has been little direct evidence for such an effect. Therefore, this study aimed to investigate the relation between students’ epistemological understanding of models and modelling and their cognitive processing (i.e., deep versus surface processing) on a modelling task. Twenty‐six students, working in dyads, were observed while working on a computer‐based modelling task in the domain of physics. Students’ epistemological understanding was assessed on four dimensions (i.e., nature of models, purposes of models, process of modelling, and evaluation of models). Students’ cognitive processes were assessed based on their verbal protocols, using a coding scheme to classify their types of reasoning. The outcomes confirmed the expected positive correlation between students’ level of epistemological understanding and their deep processing (r = 0.40, p = .04), and the negative correlation between level of epistemological understanding and surface processing (r = ?0.51, p = .008). From these results, we emphasise the necessity of considering epistemological understanding in research as well as in educational practice.  相似文献   

2.
A National Science Foundation grant to the Biological Sciences Curriculum Study (BSCS) at The Colorado College supported the design and production of training materials to encourage literacy of science teachers in the use of microcomputers. ENLIST Micros is based on results of a national needs assessment that identified 22 compentencies needed by K–12 science teachers to use microcomputers for instruction. A writing team developed the 16-hour training program in the summer of 1985, and field-test coordinators tested it with 18 preservice or in-service groups during the 1985–86 academic year at 15 sites within the United States. The training materials consist of video programs, interactive computer disks for the Apple II series microcomputer, a training manual for participants, and a guide for the group leader. The experimental materials address major areas of educational computing: awareness, applications, implementation, evaluation, and resources. Each chapter contains activities developed for this program, such as viewing video segments of science teachers who are using computers effectively and running commercial science and training courseware. Role playing and small-group interaction help the teachers overcome their reluctance to use computers and plan for effective implementation of microcomputers in the school. This study examines the implementation of educational computing among 47 science teachers who completed the ENLIST Micros training at a southern university. We present results of formative evaluation for that site. Results indicate that both elementary and secondary teachers benefit from the training program and demonstrate gains in attitudes toward computer use. Participating teachers said that the program met its stated objectives and helped them obtain needed skills. Only 33 percent of these teachers, however, reported using computers one year after the training. In June 1986, the BSCS initiated a follow up to the ENLIST Micros curriculum to develop, evaluate, and disseminate a complete model of teacher enhancement for educational computing in the sciences. In that project, we use the ENLIST Micros curriculum as the first step in a training process. The project includes seminars that introduce additional skills: It contains provisions for sharing among participants, monitors use of computers in participants' classrooms, provides structured coaching of participants' use of computers in their classrooms, and offers planned observations of peers using computers in their science teaching.  相似文献   

3.
Abstract

This study examines the effects of two different 8-week balance intervention programs for students of primary school age. Static and dynamic balance were assessed in 380 students (6–12?years) before and after an 8-week balance intervention program. Students were divided and assigned into a no intervention control group, a direct instructional model (DIM) or a tactical games model (TGM). Static and dynamic balance improved after both intervention programs, but results differed by grade (age). DIM was the most effective for G2 (7–8?years), and TGM was most effective for G4-G6 (9–12?years) students. Thus, at the youngest ages of primary school DIM balance programs in which skills are taught and practised in isolation and students work individually are more effective, but for improving balance. At more advanced ages (>8?years), TGM balance programs may be more effective.  相似文献   

4.
This article presents the results of a mixed methods study that used the Draw-a-Scientist Test as a visual tool for exploring preservice teachers’ beliefs about scientists. A questionnaire was also administered to 165 students who were enrolled in elementary (K–8) and secondary (8–12) science methods courses. Taken as a whole, the images drawn by preservice teachers reflected the stereotype of a scientist as a man with a wild hairdo who wears a lab coat and glasses while working in a laboratory setting. However, results indicated statistically significant differences in stereotypical components of representations of scientists depending on preservice teachers’ program and previous science experiences. Post degree students in secondary science methods courses created images of scientists with fewer stereotypical elements than drawings created by students in the regular elementary program.  相似文献   

5.
What does it take to change a school’s mathematics achievement profile from low to one that is proficient and advanced? Is this transformed achievement profile sustainable? Such is the story presented here, in this three-phase case study of a K-8 urban charter school’s mathematics program. The first phase discusses the school’s mathematics program as it existed in 2006. The second phase discusses the contents and interventions implemented which transformed the student achievement scores over a period of 3 years (2006–2009) from low achieving to proficient and advanced. The third phase is a follow-up mixed-methods investigation that was conducted to determine whether the achievement was sustainable and how the program changed. The interventions designed and implemented over the initial 3-year period are discussed, as are the findings of the follow-up study. This is discussed with reference to impacting change in student achievement and its relative significance for future work.  相似文献   

6.
The new Advanced Placement (AP) Computer Science (CS) Principles course increases the need for quality CS teachers and thus the need for professional development (PD). This article presents the results of a 2-year study investigating how teachers teaching the AP CS Principles course for the first time used online PD material. Our results showed that the teaching and computing background of teachers had a significant impact on the teachers' need for and use of online PD material. More specifically, novice CS teachers needed and used PD for developing their pedagogical content knowledge (PCK). Non-CS teachers needed and used PD materials emphasizing content knowledge. Experienced CS teachers believed they had little need for PD even though they were teaching a new course. Our study makes three recommendations for designing effective online PD for CS teachers: match PD to teachers' background, align PD with the course curriculum, and use effective motivational design to enhance teacher engagement. (Keywords: computer science education, online professional development, K–12, AP computer science principles course)  相似文献   

7.
The purpose of this ethnographic study was to explore the development of belief systems as related to racial and ethnic identities of preservice teachers as they crossed cultural borders into science teaching. Data were collected throughout a yearlong teacher preparation program to learn how early life experiences and racial and ethnic identities of preservice teachers influenced both their beliefs about diversity in science classrooms and science teaching pedagogy. Case studies of three preservice teachers from diverse racial and ethnic background are presented: Asian American, African American, and Rural Appalachian. Using Bank's ethnicity typology, findings suggest that racial and ethnic identity, developed in early life experiences of preservice teachers, provided clarity on the rigidity of their beliefs about diversity and how they view science teaching. By learning about the border crossing experiences of preservice teachers in relation to their beliefs about diversity as related to racial and ethnic identities, the researchers hoped to provide insight on preparing preservice teachers for the challenges of working in diverse classrooms. © 2004 Wiley Periodicals, Inc. J Res Sci Teach 41: 119–141, 2004  相似文献   

8.
Abstract: A pressing problem facing regulatory agencies, academia, and the food industry is a shortage of qualified food science graduates, particularly those with advanced degrees (that is, M.S. or Ph.D.). In 2000, the Cornell Institute of Food Science established the annual Food Science Summer Scholars Program as an experiential summer research program for undergraduate students with the goal of increasing the number of individuals enrolling in graduate programs in Food Science and entering careers in food science. In 2008, to explore expansion to other food science programs, the program also included 5 students placed at the Univ. of Massachusetts. Between 2000 and 2009, a total of 147 undergraduate students, representing a nationally and internationally diverse student body, have participated in the program. Sixty program participants have been recruited from nonfood science majors and 25 have been U.S. citizens representing traditionally underrepresented minorities. Forty‐five program alumni have completed graduate degrees with a food science or related major, and 56 alumni are currently pursuing graduate degrees in food science or related disciplines. Thirty program alumni are working in the food industry. The Food Science Summer Scholars Program at Cornell and the Univ. of Massachusetts has proved to be an effective program for recruiting students into graduate programs and careers in food science. Furthermore, the Summer Scholars Program at Cornell and the Univ. of Massachusetts serves as a model for the development of a cooperative multi‐institutional food science summer research program for undergraduates to further increase the supply of students for graduate study and careers in food science.  相似文献   

9.
The number of induction programs available to teachers is increasing rapidly, and by necessity these programs are designed to meet the needs of all teachers regardless of their preparation and academic background. This study examines the impact of a science‐focused induction program on secondary science teachers from different preparation programs. The 16 teachers were first‐year secondary science teachers who graduated the previous year from one of four different teacher‐preparation programs. All teachers were monitored during their first year of teaching, as they participated in the induction program, to understand their teaching beliefs, instructional practices, and experiences in the classroom. The analysis of data revealed that the preservice training of a science teacher influenced the type of support the teacher derived from the science‐focused induction program. Teachers from a preservice program with an extended student‐teaching experience and two science methods courses held beliefs aligned with student‐centered practices and implemented more reform‐based lessons than did other teachers during the year. This study reinforces the importance of induction programs for teachers and suggests that there is a need for specialized support programs for beginning science teachers. The study also provides specific suggestions for improving the preparation of secondary science teachers. © 2006 Wiley Periodicals, Inc. J Res Sci Teach 43: 963–985, 2006  相似文献   

10.
Research apprenticeships for secondary students provide authentic contexts for learning science in which students engage in scientific investigations with practicing scientists in working laboratory groups. Student experiences in these research apprenticeships vary depending on the individual nature of the laboratory in which students have been placed. This study explores potential relationships among student experiences in apprenticeship contexts and desired student outcomes (e.g. science content knowledge, understandings of nature of science, and aspirations for science oriented career plans). The following two research questions guided the study: How do participant experiences in and outcomes resulting from an authentic research program for high school students vary? How does variation in participant experiences in an authentic research program relate to participant outcomes? Primary data sources were student and mentor interviews in addition to student generated concept maps. Results indicated that the greatest variance in student experiences existed in the categories of collaboration, epistemic involvement, and understandings of the significance of research results. The greatest variation in desired student outcomes was observed in student understandings of nature of science and in students’ future science plans. Results suggested that collaboration and interest in the project were experience aspects most likely to be related to desired outcomes. Implications for the design of research apprenticeships for secondary students are discussed.  相似文献   

11.
Computer science is possibly one of the few remaining disciplines almost entirely dominated by men, especially university staff and in the hi-tech industries. This phenomenon prevails throughout the western world; in Israel it starts in high school, where only 30% of students who choose to take computer science as an elective are women, and continues in university and college, where usually less than 30% of the entire computer science student population is female. In this paper we present data describing women taking the undergraduate computer science program at the Open University of Israel. Covering a period of 10 years, we have examined the enrollment and results of thousands of students on 20 undergraduate computer science courses. An attempt has been made to identify whether there is a specific stage in the undergraduate program which is more difficult for women to pass. The good news is that within the Open University of Israel out of the entire population of computer science students the percentage of female enrolments and the percentage of females graduating is almost the same, and the differences in average final grade between men and women are generally not significant. This study is unique because of the large number of students which served as the study population, covering the entire undergraduate program.  相似文献   

12.
What are the effects of group size (individuals, pairs, and quads of students), gender, and ability grouping of 245 seventh- and eighth-grade students on achievement within an environment that uses microcomputers as tools in learning science process skills? A split-plot, multivariate factorial design was used to analyze the above factors and interactions among the factors. Analyses indicated that the only statistically significant result was a main effect on ability for the two response variables measured in the study. Major conclusions included: (1) teams of two and four members working together solved problems as effectively as individuals, (2) the lessons and procedures implemented in the manner described generated a gender-neutral achievement outcome in science, and (3) microcomputer, using a file-management program and structured activities, can be used as a tool to promote student learning of science process skills.  相似文献   

13.
  相似文献   

14.
ABSTRACT

School students demonstrate a lack of interest in choosing science studies and science-related careers. To better understand the underlying reasons, this study aims to examine secondary school students’ perceptions of working life skills and how these perceptions relate to the skills of the twenty-first century. The participants in this study were 144 Finnish 7th graders (aged 13–14 years). Using a questionnaire and qualitative content analysis, we examined their perceptions of working life skills in ‘careers in science’ and ‘careers with science’. Results reveal that although students have a great deal of knowledge about working life skills, it is often just stereotyped. Sector-specific knowledge and skills were highlighted in particular but skills related to society, organisation, time and higher order thinking, were often omitted. Results also indicate that students do not associate ‘careers in science’ with creativity, innovation, collaboration or technology and ICT skills. Conversely, according to the students, these careers demand more sector-specific knowledge and responsibility than ‘careers with science’. We conclude that students need more wide-ranging information about scientific careers and the competencies demanded; such information can be acquired by e.g. interacting with professionals and their real working life problems.  相似文献   

15.
Thirty-six Math Olympians (34 males and 2 females) served as the subjects in a study that asked two questions: (1) What family and school factors contribute to the development of the math talent of the Olympians? (2) What impact did the Olympiad program have on these mathematically talented students? The data were collected by means of questionnaire surveys and in-depth interviews. The major findings were as follows: (1) the Olympians were mostly the first-born child in small families and were “discovered” at an early age; (2) most Olympians ranked high in their class; (3) the SES of the Olympians' families were varied, though the majority were high; (4) the Olympians' family support and learning environment were strong and positive; (5) the Olympiad experiences were, in general, positive for the subjects, especially in learning, forming positive attitudes toward math and science, self-esteem, autonomous learning, and creative problem solving; (6) there were almost no special programs designed for the Olympians during their college years; (7) the degree of computer literacy was varied according to the subject's personal interest and the accessibility to the computer; and (8) most Olympians had not shown special achievement other than math.  相似文献   

16.
Computing is anticipated to have an increasingly expansive impact on the sciences overall, becoming the third, crucial component of a “golden triangle” that includes mathematics and experimental and theoretical science. However, even more true with computing than with math and science, we are not preparing our students for this new reality. It is appropriate and compelling therefore to consider how computer science can be fundamentally integrated into science education. This study is a ten-year review (1998–2008) of the Journal of Science Education and Technology, with the following research questions in mind: What are the intersections at the K-16 level between science and computing? What do K-16 science educators already know about the newly emerged field, computational science?  相似文献   

17.
  相似文献   

18.
This study investigated participation in a state-level science competition over most of its 35-year history. Issues examined included whether different gender patterns occurred with respect to entry rate, project topic (life science, physical science, earth science, and math), and project type (research or display). The study also examined to what extent the identified patterns reflected or contradicted nationwide patterns of girls' academic performance in science over roughly the same time period. It was found that although girls initially participated in the fair less frequently than boys, for the past 20 years their participation rate has been greater than that of boys. Examination of topic preferences over the years indicates that both girls and boys have traditionally favored life science; however, boys have been and continue to be more likely to prepare physical, earth, and math/computer science projects than girls. Another gender difference is that girls are generally less likely than boys to prepare projects based on experimental research as opposed to library research. The study provides some suggestions for teachers and teacher educators for addressing these disparities.  相似文献   

19.
I study the impacts of a freshman learning community at MIT called the Experimental Study Group (ESG) which has features aligning with the National Academies’ recommendations for expanding the representation and success of women and minorities in STEM fields. I exploit the lottery-based admission system to estimate causal treatment effects. I find no statistically significant effects on academic outcomes for ESG enrollees generally, but women who participate in the program have higher GPAs and complete more credits of coursework. Minority students are more likely to major in math, computer science, or electrical engineering after participating in the program. Though quite noisy, the results are suggestive that women and minorities in STEM may benefit from learning communities.  相似文献   

20.
科学隐喻研究已日渐成为一个新的生长点和有前途的研究方向。计算机科学作为科学领域里一门新兴的学科,从诞生的那一天起就和隐喻有着密不可分的关系。本文拟在认知隐喻的理论框架下,从计算机科学的发展过程、人类的认知规律以及语言学三个方面对计算机领域的隐喻现象进行讨论,借以证明隐喻在计算机领域应用的必然性。  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号