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Teacher practices are essential for supporting students in scientific inquiry practices, such as the construction of scientific explanations. In this study, we examine what instructional practices teachers engage in when they introduce scientific explanation and whether these practices influence students' ability to construct scientific explanations during a middle school chemistry unit. Thirteen teachers enacted a project‐based chemistry unit, How can I make new stuff from old stuff?, with 1197 seventh grade students. We videotaped each teacher's enactment of the focal lesson on scientific explanation and then coded the videotape for four different instructional practices: modeling scientific explanation, making the rationale of scientific explanation explicit, defining scientific explanation, and connecting scientific explanation to everyday explanation. Our results suggest that when teachers introduce scientific explanation, they vary in the practices they engage in as well as the quality of their use of these practices. We also found that teachers' use of instructional practices can influence student learning of scientific explanation and that the effect of these instructional practices depends on the context in terms of what other instructional practices the teacher uses. © 2007 Wiley Periodicals, Inc. J Res Sci Teach 45: 53–78, 2008 相似文献
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采用问卷调查形式,研究了初中生学习理科课程的学习动机与学习策略的发展情况.经过标准比数据处理,结果发现初中生在理科课程学习中内、外动机是相互促进的,二者对学习策略的影响都很显著.学习理科课程时监控策略运用最多,而精加工策略运用水平不高,这可能与传统的教学方式有关. 相似文献
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In this study we investigated junior high school students' processes of argumentation and cognitive development in science and socioscientific lessons. Detailed studies of the relationship between argumentation and the development of scientific knowledge are rare. Using video and audio documents of small group and classroom discussions, the quality and frequency of students' argumentation was analyzed using a schema based on the work of Toulmin ( 1958 ). In parallel, students' development and use of scientific knowledge was also investigated, drawing on a schema for determining the content and level of abstraction of students' meaning‐making. These two complementary analyses enabled an exploration of their impact on each other. The microanalysis of student discourse showed that: (a) when engaging in argumentation students draw on their prior experiences and knowledge; (b) such activity enables students to consolidate their existing knowledge and elaborate their science understanding at relatively high levels of abstraction. The results also suggest that students can acquire a higher quality of argumentation that consists of well‐grounded knowledge with a relatively low level of abstraction. The findings further suggest that the main indicator of whether or not a high quality of argument is likely to be attained is students' familiarity and understanding of the content of the task. The major implication of this work for developing argumentation in the classroom is the need to consider the nature and extent of students' content‐specific experiences and knowledge prior to asking them to engage in argumentation. © 2007 Wiley Periodicals, Inc. J Res Sci Teach 45: 101–131, 2008 相似文献
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张瑜鸿 《黑龙江教育学院学报》2014,(2):201-202
新课程改革的全面实施对中学图书馆提出了新的要求。要适应新课程改革不断推进的需要,必须探索中学图书馆今后的发展方向,加强图书管理队伍建设,构建高质量的馆藏文献资源体系。 相似文献
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丁文中 《和田师范专科学校学报》2005,25(5):156-157
研究性学习既是一种学习方式,也是一种课程形态.它有重过程、重应用、重实践、重全体参与的特点.中学体育教学开展研究性学习有一定的实施方法.在体育研究性学习中体育教师是学生学习的指导者,教师要创设问题情境,诱发学生探究动机,营造愉悦的学习氛围,建构良好的学习共同体,引导学生总结评价和进行反思. 相似文献
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美的课堂教学能调动学生的学习积极性,使学生产生对知识的渴望,促进师生共同发展,因此,课堂美是科学课堂所追求的目标.教师可以通过生活事例、科学故事、课堂游戏、科学实验、新闻事件、古诗文的运用开发课程资源,让课堂教学达到美的境界. 相似文献
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把课题研究这种学习方式引入到地理教学与学习中,以打破目前高中地理教育的胶着状态。通过让学生参与课题研究,激活学生对地理知识的学习兴趣,借此提高学生学习地理的效益,减轻学业负担和提高学生的地理学科学习力,并促进地理课程资源生活化、本土化。 相似文献
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开展活动课程是实施素质教育的一个有效途径,而中学物理科技活动课程在其中占有重要的地位。设计并实施"汽车里的物理"这样一节课,收到良好的效果。通过整理设计思路与教学反思,以期给物理教育工作者提供一定参考。 相似文献
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This study describes a collaborative study involving a teacher and university researcher using learning environment research to transform a middle school science learning environment. Habermas' idea of knowledge constitutive interests (technical, practical, and emancipatory) is used as a perspective to make sense of the learning environment. Student perceptions of science and the nature of science were explored. Classroom observations and student interviews were the primary data sources. Students perceived science as primarily a set of facts to be learned and did not view it as an inquiry method or a social process. Despite the characterization of the course by the teacher and students as hands-on and experimental, technical interests were prevalent. Through negotiation, a plan of action was outlined for recreating the learning environment to make it more practical and emancipatory, as well as more consistent with contemporary perspectives on the nature of science. 相似文献
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In this study, we analyzed the quality of students' written scientific explanations found in notebooks and explored the link between the quality of the explanations and students' learning. We propose an approach to systematically analyzing and scoring the quality of students' explanations based on three components: claim, evidence to support it, and a reasoning that justifies the link between the claim and the evidence. We collected students' science notebooks from eight science inquiry‐based middle‐school classrooms in five states. All classrooms implemented the same scientific‐inquiry based curriculum. The study focuses on one of the implemented investigations and the students' explanations that resulted from it. Nine students' notebooks were selected within each classroom. Therefore, a total of 72 students' notebooks were analyzed and scored using the proposed approach. Quality of students' explanations was linked with students' performance in different types of assessments administered as the end‐of‐unit test: multiple‐choice test, predict‐observe‐explain, performance assessment, and a short open‐ended question. Results indicated that: (a) Students' written explanations can be reliably scored with the proposed approach. (b) Constructing explanations were not widely implemented in the classrooms studied despite its significance in the context of inquiry‐based science instruction. (c) Overall, a low percentage of students (18%) provided explanations with the three expected components. The majority of the sample (40%) provided only claims without any supporting data or reasoning. And (d) the magnitude of the correlations between students' quality of explanations and their performance, were all positive but varied in magnitude according to the type of assessment. We concluded that engaging students in the construction of high quality explanations may be related to higher levels of student performance. The opportunities to construct explanations in science‐inquiry based classrooms, however, seem to be limited. © 2010 Wiley Periodicals, Inc. J Res Sci Teach 47: 583–608, 2010 相似文献
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Students at the junior high school (JHS) level often cannot use their knowledge of physics for explaining and predicting phenomena. We claim that this difficulty stems from the fact that explanations are multi‐step reasoning tasks, and students often lack the qualitative problem‐solving strategies needed to guide them. This article describes a new instructional approach for teaching mechanics at the JHS level that explicitly teaches such a strategy. The strategy involves easy to use visual representations and leads from characterizing the system in terms of interactions to the design of free‐body force diagrams. These diagrams are used for explaining and predicting phenomena based on Newton's laws. The findings show that 9th grade students who studied by the approach advanced significantly from pretests to post‐tests on items of the Force Concept Inventory—FCI and on other items examining specific basic and complex understanding performances. These items focused on the major learning goals of the program. In the post‐tests the JHS students performed on the FCI items better than advanced high‐school and college students. In addition, interviews conducted before, during, and after instruction indicated that the students had an improved ability to explain and predict phenomena using physics ideas and that they showed retention after 6 months. © 2010 Wiley Periodicals, Inc. J Res Sci Teach 47: 1094–1115, 2010 相似文献
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This paper reports a test on the feasibility and educational value of probeware and associated instructional materials in middle school science education. We addressed feasibility through consideration of costs, teacher professional development, and instructional design. In order to test our approach, we developed 2 middle school science curriculum units, 6 low-cost probes that interface between handheld Palm computers, and CCLabBook software for the Palms that presents the curriculum, interfaces with the probes for data collection and visualization, and supports guided exploration. The materials were tested by 30 teachers in the first year, and in a follow-up study by 8 of those teachers the second year. We found that teachers were able to conduct the investigations successfully in their classrooms, and that student learning was enhanced through the use of the probes and handhelds. Specifically, students experienced the physical correlation between phenomenon and modeling, which helped them to develop understanding and to confront misconceptions. 相似文献
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以国际的视野,明确物理课程建构目标,透视国内外几种典型的STS课程,吸纳其思想,并根据物理学的特质和现实,尝试建构体现STS教育理念的物理课程· 相似文献
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In this study we examined curriculum integration in new ways by exploring the link between classroom context, the implementation of community‐based, integrated science projects, and the subsequent student learning. The literature is inconsistent regarding the benefits of an integrated approach to curriculum. The research design was a multiple case study conducted in two classrooms in different schools. We employed a “worldly interpretive framework” that recognizes and embraces the importance of context in framing curriculum practices and outcomes. We found that similar projects in the two classrooms produced distinctly different (and equally valid) outcomes—focused either on bounded discipline‐specific knowledge or, alternatively, on issues and problems that transcended disciplinary boundaries. © 2008 Wiley Periodicals, Inc. J Res Sci Teach 45: 857–880, 2008 相似文献
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In this study we present an analysis of classroom interactions initiated by students' wonderment questions. Our interest in such events arises from their potential to stimulate active intellectual engagement in classrooms, which can impact upon the subsequent development of the classroom discourse. In investigating this issue we shall address the following research question: How do student questions impact upon the teaching explanatory structure and modify the form of the ongoing classroom discourse, in selected science lessons? From data collected in a Brazilian secondary school we have selected three classroom episodes, with large differences in both the context in which the student's question emerges and in the communicative approach developed in response to it. The analysis, based on the framework proposed by Mortimer and Scott [Mortimer and Scott (2003). Meaning making in secondary science classrooms. Maidenhead: Open University Press], shows that questions made by students are important in providing feedback from students to the teacher, enabling adjustments to the teaching explanatory structure. These adjustments sometimes occur smoothly, at other times with major changes to the features of the classroom discourse, and elsewhere with misunderstanding and disagreement. The data also suggest the need to consider students' intentions and their active participation in the negotiation of both the content and structure of classroom discourse. © 2009 Wiley Periodicals, Inc. J Res Sci Teach 47:174–193, 2010 相似文献
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国外及我国开展研究性学习的综述 总被引：7，自引：0，他引：7
研究性学习是近年来世界教育界研究的热点问题。美国研究性学习主要以基于问题的学习和基于项目的学习为主;法国已经在初中、大学预备班和高中全面开展研究性学习;日本以综合活动课程的形式开展研究性学习;韩国的研究性学习将学生的学习内容分为知识和研究活动两个层次;德国开展课题学习;而我国把研究性学习作为课改的主要内容。 相似文献
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This paper details a project which involved a group of art specialist Diploma in Education students, two lecturing staff plus a group of primary school children in a series of planned art activities for two terms. The Saturday Morning Art programme (S.M.ART) was developed to enable the students to systematically focus on art learning in these classes by using largely qualitative research processes within a case study framework. By introducing these pre-service trainee art teachers to research techniques which they can then use, we believe we are preparing them to be self-evaluative and reflective practitioners in the classroom. 相似文献