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This study (a) assessed the influence of three history of science (HOS) courses on college students' and preservice science teachers' conceptions of nature of science (NOS), (b) examined whether participants who entered the investigated courses with a conceptual framework consistent with contemporary NOS views achieved more elaborate NOS understandings, and (c) explored the aspects of the participant HOS courses that rendered them more “effective” in influencing students' views. Participants were 166 undergraduate and graduate students and 15 preservice secondary science teachers. An open‐ended questionnaire in conjunction with individual interviews, was used to assess participants' pre‐ and postinstruction NOS views. Almost all participants held inadequate views of several NOS aspects at the outset of the study. Very few and limited changes in participants' views were evident at the conclusion of the courses. Change was evident in the views of relatively more participants, especially preservice science teachers, who entered the HOS courses with frameworks that were somewhat consistent with current NOS views. Moreover, explicitly addressing certain NOS aspects rendered the HOS courses relatively more effective in enhancing participants' NOS views. The results of this study do not lend empirical support to the intuitively appealing assumption held by many science educators that coursework in HOS will necessarily enhance students' and preservice science teachers' NOS views. However, explicitly addressing specific NOS aspects might enhance the effectiveness of HOS courses in this regard. Moreover, the study suggests that exposing preservice science teachers to explicit NOS instruction in science methods courses prior to their enrollment in HOS courses might increase the likelihood that their NOS views will be changed or enriched as a result of their experiences with HOS. © 2000 John Wiley & Sons, Inc. J Res Sci Teach 37: 1057–1095, 2000 相似文献
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Floating and sinking (FS) is a key topic in science education, both at primary and secondary levels. The interpretation of FS phenomena, however, is challenging due to the difficulty of the scientific concepts and explanatory models involved (e.g., density, buoyancy), along with students' everyday experiences, which conflict with scientific explanations. Consequently, many studies over the last few decades have investigated how FS could be taught effectively to students of different ages while utilizing multiple teaching approaches. This meta-analysis summarizes findings from 69 intervention studies on teaching FS conducted between 1977 and 2021. Over all studies, we estimated a mean effect size of g = 0.85 (95% CI = 0.71, 0.99). This large effect size demonstrates that, although FS is a challenging concept, teaching FS is effective even in elementary school. Moreover, in a moderator analysis, we investigate the effect of intervention characteristics, students' age, as well as study design, and assessment features on the mean study effect size. To analyze the effect of these moderator variables, we use a three-level hierarchical meta-regression model for dealing with multiple effect sizes from single studies. We found two intervention characteristics that explain variance in study effect sizes: longer lasting interventions result in larger effect sizes and interventions where hands-on experiments are applied are more effective than those utilizing virtual experiments. Furthermore, studies with a treatment-control group comparison have significantly smaller effect sizes than studies with a pre-post design. We discuss the implications of our findings regarding the moderator variables for effective teaching of FS and further research on FS. 相似文献
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Andrea M. Liceaga Tameshia S. Ballard Levon T. Esters 《Journal of Food Science Education》2014,13(2):28-32
Purdue Univ.'s College of Agriculture developed an Advanced Life Sciences (ALS) program in partnership with several high schools across Indiana. As part of ALS, secondary educators take an introductory food science (FS) course (ALS‐Foods) and teach it at their high school. High school students taking the ALS‐Foods receive dual credit for an introductory course required for all FS majors at Purdue. The goal of this project was to develop an online course to improve content knowledge and self‐efficacy of secondary educators in the field of FS. The course was offered over a 3‐wk period and consisted of 3 learning modules focused on food chemistry, food microbiology, and food processing. Modules included class activities, videos, study questions, and teaching tools. Participants were assessed on content knowledge through written assignments, quizzes, and a final examination. Twenty secondary educators from several states were enrolled. Overall, content knowledge increased significantly (P < 0.05) across all 3 modules after completing the course. Highest scores were in food microbiology/safety (84%), followed by food processing (76%) and food chemistry (70%). A precourse survey indicated that the majority (>80%) of participants felt they had “no‐confidence” to “little‐confidence” in teaching FS concepts related to the 3 modules. Upon completing the course, the confidence level of all participants increased to “some‐confidence” or “complete confidence.” By strengthening the knowledge level of secondary educators, they will be better prepared to teach FS and subsequently, more high school students could be exposed to FS and consider it as a career. 相似文献
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Janise S. Parker Avery Amabile Emily Oliver Jasmine Garnes Ashwini Sarathy 《Psychology in the schools》2020,57(8):1289-1308
We conducted four focus group interviews with 24 high school youth to examine facilitators and barriers to African American high school students' expression of various self-determination skills (e.g., choice/decision making, self-advocacy, goal setting, and attainment etc.). The majority of our research participants were African American, with one student identifying as multiracial (African American and White). Key findings revealed that personal (e.g., desire to graduate from school) and contextual factors (e.g., school counselor and teacher support) influenced the participants' expression of multiple self-determination skills. We also found that some of the participants' motives for utilizing or not utilizing specific skills were influenced by what they perceived as racist, punitive, and restrictive school practices (e.g., teachers holding negative perceptions about African American students and school counselors restricting their access to advanced courses). Findings from this study support ongoing calls for educators to consider students' cultural backgrounds and lived experiences when promoting their expression of self-determination skills. 相似文献
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Heejeong Sophia Han Eugenia Vomvoridi-Ivanović Jennifer Jacobs Zorka Karanxha Andrea Lypka Cindy Topdemir 《Studying Teacher Education》2014,10(3):290-312
In this article we discuss findings from a collaborative self-study of how seven teacher educators define, enact, and navigate their roles as culturally responsive educators across various programs within a higher education institution. All participants conducted an individual interview with another team member and engaged in prolonged team meetings in order to understand and conceptualize culturally responsive pedagogy (CRP). Findings include the participants' difficulty with defining CRP in higher education; the importance of modeling and building relationships with students when enacting CRP; tensions related to students and institutions; and professional and personal opportunities to continuously evolve. The findings begin to fill in a void for an articulated framework of CRP beyond P-12 classrooms and illustrate the type of support and professional development higher education institutions need to provide for teacher educators to actualize this work. 相似文献
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The importance of “size and scale” in nanoscience and engineering has been recognized by both scientists and science educators. A solid understanding of this concept is key to the learning of nanoscience. Students, however, have been reported to have considerable difficulty grasping this concept; yet little is known regarding their state of understanding. To address this knowledge gap, we conducted a series of studies that were aimed at exploring the different ways students conceive of “size and scale” in the context of undergraduate nanoscience and engineering courses. Informed by Variation Theory of Learning (Marton and Booth, 1997), we identified four major categories (with two sub‐categories within each) of student conception—fragmented, linear, proportional, and logarithmic. These conception categories, together with the aspects of variation that characterize and distinguish them, are summarized in a typology. In addition to serving as a diagnostic tool to describe students' understanding, this typology can also be used to guide the development of instructional interventions that facilitate students to move toward a more sophisticated understanding of “size and scale.” © 2011 Wiley Periodicals, Inc., Inc. J Res Sci Teach 48: 512–533, 2011 相似文献
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Issues regarding scientific explanation have been of interest to philosophers from Pre-Socratic times. The notion of scientific explanation is of interest not only to philosophers, but also to science educators as is clearly evident in the emphasis given to K-12 students' construction of explanations in current national science education reform efforts. Nonetheless, there is a dearth of research on conceptualizing explanation in science education. Using a philosophically guided framework—the Nature of Scientific Explanation (NOSE) framework—the study aims to elucidate and compare college freshmen science students', secondary science teachers', and practicing scientists' scientific explanations and their views of scientific explanations. In particular, this study aims to: (1) analyze students', teachers', and scientists' scientific explanations; (2) explore the nuances about how freshman students, science teachers, and practicing scientists construct explanations; and (3) elucidate the criteria that participants use in analyzing scientific explanations. In two separate interviews, participants first constructed explanations of everyday scientific phenomena and then provided feedback on the explanations constructed by other participants. Major findings showed that, when analyzed using NOSE framework, participant scientists did significantly “better” than teachers and students. Our analysis revealed that scientists, teachers, and students share a lot of similarities in how they construct their explanations in science. However, they differ in some key dimensions. The present study highlighted the need articulated by many researchers in science education to understand additional aspects specific to scientific explanation. The present findings provide an initial analytical framework for examining students' and science teachers' scientific explanations. 相似文献
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This qualitative case study examines a sojourn in an English speaking country for a group of experienced teachers of English as a foreign language (EFL). Sojourner learning was interpreted through a community of practice perspective. These participants formed a transitory community in the host country to support their academic and social learning. This enabled participants to engage in unfamiliar roles during their study abroad experience. On the participants' return to their home country, they no longer shared a common goal and disbanded the community. By recognising the life span of a community, educators can design programmes using participants' shared resources. 相似文献
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Abstract Adventure education philosophers have argued that controlled exposure to challenge can enhance participants' psychological resilience. This study supports this claim, demonstrating significantly greater gains in psychological resilience for 41 young adults participating in 22-day Outward Bound programs than in a control group. All Outward Bound participants reported positive changes in their resilience and their overall change effect size was large. Perceived levels of social support predicted 24% of the variance in resilience gain scores, with participants' ratings of the least supportive group member being the best predictor. The findings for enhanced resilience and the important role of social support warrant wider investigation. In promoting psychological resilience adventure educators are alerted to the importance of facilitating positive interpersonal relations and minimising the detrimental impact of the diverse needs of group members. 相似文献
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Elaine V. Howes 《科学教学研究杂志》2002,39(9):845-869
Implicit in the goal of recent reforms is the question: What does it mean to prepare teachers to teach “science for all”? Through a teacher research study, I have encountered characteristics that may assist prospective elementary teachers in developing effective, inclusive science instruction. I describe these strengths, link them to requirements for teaching, and suggest how science teacher educators might draw on the strengths of their own students to support teaching practices aimed at universal scientific literacy. My conceptual framework is constructed from scholarship concerning best practice in elementary science education, as well as that which describes the dispositions of successful teachers of diverse learners. This study is based on a model of teacher research framed by the concept of “research as praxis” and phenomenological research methodology. The findings describe the research participants' strengths thematically as propensity for inquiry, attention to children, and awareness of school/society relationships. I view these as potentially productive aspects of knowledge and dispositions about science and about children that I could draw on to further students' development as elementary science teachers. © 2002 Wiley Periodicals, Inc. J Res Sci Teach 39: 845–869, 2002 相似文献
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Science teachers and educators seek to promote equity and inclusion within their classrooms. Yet, many do not examine how their roles could reproduce oppression that continues to exclude certain groups of students. Centering on how oppression interacts with science teaching and learning, this naturalistic study observed Ms. William and her implementation of two STEM units that integrate science and engineering, to understand power, race, and privilege dynamics in her middle school STEM classrooms. Specifically, we focused on understanding oppression at the interpersonal and internalized level in Ms. William's class. We collected and analyzed video recorded lessons from two different classrooms, two STEM curricula Ms. William had co-developed, and conducted semi-structured interviews after she taught her two STEM units. We identified themes of oppression perpetuated in the classroom by employing thematic analysis, which when guided by our theoretical framework enabled us to illuminate the complex relationship between science teaching and maintaining whiteness as the dominant discourse in science learning. Our findings suggest that an active and critical role from science teachers and educators are required; we must reflect deeply on our science curriculum and teaching strategies and identify practices that remains to be oppressive if promoting equity and inclusion is at the forefront of our science teaching. 相似文献
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Next generation crosscutting themes: Factors that contribute to students' understandings of size and scale 
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下载免费PDF全文 Katherine Chesnutt Melissa Gail Jones Rebecca Hite Emily Cayton Megan Ennes Elysa N. Corin Gina Childers 《科学教学研究杂志》2018,55(6):876-900
This study examined the degree to which individual differences in students' (N = 232) concepts of size and scale are explained by factors such as students' innate sense of number, out‐of‐school science experiences, exposure to size and scale instruction, gender identities, and racial/ethnic identities. There is increasing emphasis being placed on the use of crosscutting concepts to promote deep learning in science. A multiple linear regression indicated students' racial/ethnic identities, experiences with scale outside of school, and exposure to size and scale instruction significantly added to the prediction model. Results from this study can both inform the movement toward incorporating crosscutting concepts into pedagogy as well as inform educators, administrators, and other stakeholders of the factors that may shape students' understanding of the cross‐cutting concept of scale, proportion, and quantity. 相似文献
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Lorie Blackman Richard L. Hayes Patricia M. Reeves Pamela O. Paisley 《Counselor Education & Supervision》2002,41(3):243-255
Despite calls for collaboration between counselor educators and school counselors, little is known about how collaboratives develop and what, if any, benefits are derived by the participants. In this article, the authors describe an 8‐year collaboration between a group of university‐based counselor educators and school counselors in 1 partnership community. Interviews with selected members of the collaborative were conducted to assess the participants' perceptions of the impact of this collaborative on their professional lives. A qualitative analysis of interviews revealed that renewal, professional development, and community are central to the experience of participants. Implications for future collaborations and research are discussed. 相似文献
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Jason R. Sattizahn Daniel J. Lyons Carly Kontra Susan M. Fischer Sian L. Beilock 《Mind, Brain, and Education》2015,9(3):164-169
Student difficulties in science learning are frequently attributed to misconceptions about scientific concepts. We argue that domain‐general perceptual processes may also influence students' ability to learn and demonstrate mastery of difficult science concepts. Using the concept of center of gravity (CoG), we show how student difficulty in applying CoG to an object such as a baseball bat can be accounted for, at least in part, by general principles of perception (i.e., not exclusively physics‐based) that make perceiving the CoG of some objects more difficult than others. In particular, it is perceptually difficult to locate the CoG of objects with asymmetric‐extended properties. The basic perceptual features of objects must be taken into account when assessing students' classroom performance and developing effective science, technology, engineering, and mathematics (STEM) teaching methods. 相似文献
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Chard DJ 《Journal of learning disabilities》2004,37(3):213-217
Science has been an important partner of the field of learning disabilities since its inception. Special educators have used science to confirm or reject approaches to identifying and teaching students with disabilities. Current research and practice is using science to find better approaches to preventing learning difficulties and reducing the number of students referred for special education. However, I caution that if we want science to have the desired impact on the educational and social outcomes of students with learning disabilities, we must take care not to misuse it. 相似文献
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Sally Lineback Molly Allender Rachel Gaines Christopher J. McCarthy Andrea Butler 《Educational Studies A Journal of the American Educational Studies Association》2016,52(6):592-613
Qualitative methodologies were used to identify the demands and resources lesbian and gay (LG) teachers face in their schools. Data sources included 2 interviews each with 11 teachers who each identified as lesbian or gay. Analyses of interview data indicated 3 main findings. First, although all teachers experienced demands because of their sexual orientation, the nature of the demands were different depending on their level of openness. Second, social support from others (e.g., colleagues, administrators, and partners) emerged as a particularly important coping resource for LG teachers. Third, by identifying specific demands unique to participants' roles as teachers, the results suggested the importance of work context in understanding LG teacher stress. Implications for teacher educators and LG teachers are discussed. 相似文献
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The influence of a 3-week institute upon secondary biology and earth science teachers regarding their experiences with respect to the teaching of evolution was investigated. The institute directors, with National Science Foundation (NSF) funding, hoped to foster an understanding of the nature of science, provide enhanced content, and support a forum for teachers to discuss problems common to the teaching of evolution. Analysis of data indicated statistically significant increases in participants' acceptance of the theory of evolution and their understanding of both applied evolutionary principles and the applied nature of science. In addition, a significant reduction in participants' perceived anxieties regarding the teaching of evolution was achieved. Further, a qualitative examination of Stages of Concern (SoC) profiles indicated a slight shift by participants toward the use of more student-centered instruction. Finally, data were collected from 9 of the original 19 participants at a voluntary follow-up session, 8 months after the formal institute. Scores from all of the data-collection instruments (with the exception of SoC profiles) exhibited a slight decline. These decreases were not, however, statistically significant. Examination of SoC profiles, however, indicated a much stronger adoption by follow-up participants for the use of student-centered instructional strategies for the teaching of evolution. 相似文献
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Kai Pekka Hakkarainen Susanna Wires Jenni Keskinen Sami Paavola Pasi Pohjola Kirsti Lonka 《Studies in Continuing Education》2014,36(1):83-100
The purpose of the present study was to investigate knowledge-creating agency by examining doctoral students' accounts of their pursuits, using structured interviews. We examined all of the talk apparently related to agency of 13 doctoral students taking part in collective doctoral training in two, highly regarded Finnish research communities (natural science and medicine). The doctoral process involved the participants pursuing article-based theses based on collectively shared research problems and journal articles co-authored with the supervisor and other senior researchers. Based on the qualitative analysis of the interviews, three categories of agentic talk were identified, respectively, for three proposed types of knowledge-creating agency: personal, distributed, and ‘object-related’. Personal agency involved participants' reflection on their academic competence, self-efficacy, and personal strengths and weaknesses. Distributed agency played an important role in assisting these participants overcoming challenges; this includes sharing of expertise, receiving social support, and having a sense of collective efficacy. Object-related agency, in turn, represented integration of a doctoral student's efforts with those of her immediate research community while pursuing shared research objects (e.g., co-authored articles). Apart from issues of agency which, the authors propose, are raised in the interviews, the data provide content-rich accounts of the collective nature of doctoral experiences. 相似文献