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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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Lawrence C. Scharmann 《科学教学研究杂志》1989,26(8):715-726
Science educators have claimed that well-conceived instructional strategies and curricular sequences, emphasizing the process aspects of science, will foster an understanding of the nature of science. Furthermore, a process emphasis on science has been cited for its ability to promote logical thinking skill, develop a locus of control “shift,” and enhance science content acquisition. The intent of this investigation was to examine the purported influence and developmental nature of a science process emphasis during a given semester of study, as well as over extended curricular sequences, each sequence being representative of three recognized preservice elementary science teacher preparatory programs. Data were collected from 135 elementary preservice teachers enrolled in science teaching methods courses at the endpoint of one of three sequences: (a) introductory process instruction with three subsequent semesters of integrated science content and teaching methods, (b) process instruction with separate subsequent content and teaching methods, and (c) only science content with subsequent teaching methods. Another 29 preservice teachers, assessed prior to entry into instructional sequences, provided a cross-sectional sample for examining developmental changes in locus of control, logical thinking, nature of science, and science content knowledge. Statistical procedures included Kruskal-Wallis ANOVA and Wilcoxon tests. Results indicated that a one-semester process skills course was influential in developing a basis for science content acquisition and in fostering an understanding of the nature of science. Results further indicate that expected additional gains are significant in science content acquisition through matriculation in an extended curricular sequence. Implications for science educators are discussed. 相似文献
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In this study, we defined and quantified the degree of cognitive conflict induced by a discrepant event from a cognitive perspective. Based on the scheme developed, we investigated the relationship between cognitive conflict and conceptual change, and the influences of students' cognitive characteristics on conflict in learning the concept of density. Subjects were 171 seventh-grade girls from two city middle schools in Korea. Tests regarding logical thinking ability, field dependence/independence, and meaningful learning approach were administered. A preconception test and a test of responses to a discrepant event were also administered. Computer-assisted instruction was then provided to students as a conceptual change intervention. A conception test was administered as a posttest. In analysing students' responses to the discrepant event, seven types of responses were identified: Rejection, reinterpretation, exclusion, uncertainty, peripheral belief change, belief decrease, and belief change. These types were then ordered into four levels. The results indicated that there existed a significant correlation between cognitive conflict and conceptual change. t-test results revealed that there were statistically significant differences in the degree of cognitive conflict by the levels of students' logical thinking ability and field dependence/independence. Meaningful learning approach, however, was found to have no statistically significant effect on cognitive conflict. Educational implications are discussed. 相似文献
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Prior research in both education and cognitive science has identified analogy making as a powerful tool for explanation as well as a fundamental mechanism for facilitating an individual's construction of knowledge. While a considerable body of research exists focusing on the role analogy plays in learning science concepts, relatively little is known about how instruction in the use of analogies might influence the teaching performance of preservice teachers. The primary objective of this study was to investigate the relationship between pedagogical analogy use and pedagogical reasoning ability in a sample of preservice elementary teachers (PTs), a group that has been identified for their particular difficulties in teaching science. The study utilized a treatment/contrast group design in which the treatment group was provided instruction that guided them in the generation of analogies to aid in the explanation phase of learning cycle lessons. A relationship between analogy use and positive indicants of teaching performance was observed and a case study of a low performing preservice teacher who drastically improved teaching performance using analogy‐based pedagogy is presented. A notable effect on conceptual understanding of Newton's Third Law as a result of two brief analogy‐based demonstration lessons was also observed. © 2007 Wiley Periodicals, Inc. J Res Sci Teach 44: 565–585, 2007. 相似文献
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This investigation delineates a multi-year action research agenda designed to develop an instructional model for teaching the nature of science (NOS) to preservice science teachers. Our past research strongly supports the use of explicit reflective instructional methods, which includes Thomas Kuhn’s notion of learning by ostention and treating science as a continuum (i.e., comparing fields of study to one another for relative placement as less to more scientific). Instruction based on conceptual change precepts, however, also exhibits promise. Thus, the investigators sought to ascertain the degree to which conceptual change took place among students (n = 15) participating in the NOS instructional model. Three case studies are presented to illustrate successful conceptual changes that took place as a result of the NOS instructional model. All three cases represent students who claim a very conservative Christian heritage and for whom evolution was not considered a legitimate scientific theory prior to participating in the NOS instructional model. All three case study individuals, along with their twelve classmates, placed evolution as most scientific when compared to intelligent design and a fictional field of study called “Umbrellaology.” 相似文献
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Lawrence C. Scharmann Mike U. Smith Mark C. James Murray Jensen 《Journal of Science Teacher Education》2005,16(1):27-41
The investigators sought to design an instructional unit to enhance an understanding of the nature of science (NOS) by taking into account both instructional best practices and suggestions made by noted science philosopher Thomas Kuhn. Preservice secondary science teachers enrolled in a course, Laboratory Techniques in the Teaching of Science, served as participants in action research. Sources of data used to inform instructional decisions included students written reaction papers to the assigned readings, transcribed verbal comments made during class discussions and other in-class activities, and final reflection essays. Three iterative implementations of the instructional unit were attempted. The objectives of the study were essentially met. The instructional unit was able to provoke preservice teachers into wrestling with many substantive issues associated with the NOS. Implications concerning the design of explicit reflective NOS instruction are included. 相似文献
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Scientific knowledge often appears to contradict many students' religious beliefs. Indeed, the assumptions of science appear contradictory to the metaphysical claims of many religions. This conflict is most evident in discussions of biological evolution. Teachers, in attempts to limit the controversy, often avoid this topic or teach it superficially. Recently, there has been a political effort to teach to the controversy—which some see as a way of introducing religious explanations for biological diversity into science classrooms. Many science educators reject this approach, insisting that teachers limit classroom discussions to science alone. This science only approach leaves the negotiation of alternative knowledge frameworks to students, who are often ill-prepared for such epistemological comparisons. To support students' understanding of science while maintaining their religious commitments, this article explores the utility of emphasizing the boundaries of scientific knowledge and the need to support students in their comparison of contradictory knowledge frameworks. 相似文献
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The goal of this study was to explore Christian biology‐related majors' perceptions of conflicts between evolution and their religious beliefs. This naturalistic study utilized a case study design of 15 undergraduate biology‐related majors at or recent biology‐related graduates from a mid‐western Christian university. The broad sources of data were interviews, course documents, and observations. Outcomes indicate that most participants were raised to believe in creationism, but came to accept evolution through evaluating evidence for evolution, negotiating the literalness of Genesis, recognizing evolution as a non‐salvation issue, and observing professors as Christian role models who accept evolution. This study lends heuristic insight to researchers and educators seeking to understand the complex processes by which Christian biology‐related majors approach learning about evolution. © 2011 Wiley Periodicals, Inc. J Res Sci Teach 48: 1026–1049, 2011 相似文献