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1.
Intensive time-series designs for classroom investigations have been under development since 1975. Studies have been conducted to determine their feasibility (Mayer & Lewis, 1979), their potential for monitoring knowledge acquisition (Mayer & Kozlow, 1980), and the potential threat to validity of the frequency of testing inherent in the design (Mayer & Rojas, 1982). This study, an extension of those previous studies, is an attempt to determine the degree of discrimination the design allows in collecting data on achievement. It also serves as a replication of the Mayer and Kozlow study, an attempt to determine design validity for collecting achievement data. The investigator used her eighth-grade earth science students, from a suburban Columbus (Ohio) junior high school. A multiple-group single intervention time-series design (Glass, Willson, & Gottman, 1975) was adapted to the collection of daily data on achievement in the topic of the intervention, a unit on plate tectonics. Single multiple-choice items were randomly assigned to each of three groups of students, identified on the basis of their ranking on a written test of cognitive level (Lawson, 1978). The top third, or those with formal cognitive tendencies, were compared on the basis of knowledge achievement and understanding achievement with the lowest third of the students, or those with concrete cognitive tendencies, to determine if the data collected in the design would discriminate between the two groups. Several studies (Goodstein & Howe, 1978; Lawson & Renner, 1975) indicated that students with formal cognitive tendencies should learn a formal concept such as plate tectonics with greater understanding than should students with concrete cognitive tendencies. Analyses used were a comparison of regression lines in each of the three study stages: baseline, intervention, and follow-up; t-tests of means of days summed across each stage; and a time-series analysis program. Statistically significant differences were found between the two groups both in slopes of regression lines (0.0001) and in t-tests (0.0005) on both knowledge and understanding levels of learning. These differences confirm the discrimination of the intensive time-series design in showing that it can distinguish differences in learning between students with formal cognitive tendencies and those with concrete cognitive tendencies. The time-series analysis model with a trend in the intervention was better than a model with no trend for both groups of students, in that it accounted for a greater amount of variance in the data from both knowledge and understanding levels of learning. This finding adds additional confidence in the validity of the design for obtaining achievement data. When the analysis model with trend was used on data from the group with formal cognitive tendencies, it accounted for a greater degree of variance than the same model applied to the data from the group with concrete cognitive tendencies. This more conservative analysis, therefor, gave results consistent with those from the more usual linear regression techniques and t-tests, further adding to the confidence in the discrimination of the design. 相似文献
2.
Keith Skamp 《Asia-Pacific Journal of Teacher Education》1992,20(2):121-136
Many primary teachers have a limited understanding of science concepts. A recent Australian government review of science teacher education strongly recommended that this problem be addressed in preservice and post‐initial teacher education programs. This paper outlines some approaches that might satisfy this recommendation. Course structure and design are initially considered. Specific techniques are then described which revolve around a constructivist approach to teaming science concepts. Although the importance of science processes is still acknowledged, it is implied that significant time needs to be devoted to reflecting upon and sharing one's own perceptions of science concepts. Some exemplar professional development courses and materials which also address the teacher's own science knowledge are considered briefly. The suggestions and examples draw heavily upon approaches taken by British teacher educators who have had to confront this issue directly because of the nature of their science syllabus. 相似文献
3.
Fernando Cajas 《科学教学研究杂志》2001,38(7):715-729
Science literacy includes understanding technology. This raises questions about the role of technology in science education as well as in general education. To explore these questions, this article begins with a brief history of technology education as it relates to science education and discusses how new conceptions of science and technological literacy are moving beyond the dichotomies that formerly characterized the relationship between science and technology education. It describes how Benchmarks for Science Literacy, the National Science Education Standards, and the Standards for Technological Literacy have been making a case for introducing technology studies into general education. Examples of specific technological concepts fundamental for science literacy are provided. Using one example from the design of structures, the article examines how understanding about design (i. e., understanding constraints, trade‐offs, and failures) is relevant to science literacy. This example also raises teaching and learning issues, including the extent to which technology‐based activities can address scientific and technological concepts. The article also examines how research can provide guides for potential interactions between science and technology and concludes with reflections on the changes needed, such as the creation of curriculum models that establish fruitful interactions between science and technology education, for students to attain an understanding of technology. © 2001 John Wiley & Sons, Inc. J Res Sci Teach 38: 715–729, 2001 相似文献
4.
Mary M. Atwater 《科学教学研究杂志》1996,33(8):821-837
This article focuses on (a) theoretical underpinnings of social constructivism and multicultural education and (b) aspects of social constructivism that can provide frameworks for research in multicultural science education. According to the author, multicultural science education is “a field of inquiry with constructs, methodologies, and processes aimed at providing equitable opportunities for all students to learn quality science.” Multicultural science education research continues to be influenced by class, culture, disability, ethnicity, gender, and different lifestyles; however, another appropriate epistemology for this area of research is social constructivism. The essence of social constructivism and its implications for multicultural science education research includes an understanding of whatever realities might be constructed by individuals from various cultural groups and how these realities can be reconstituted, if necessary, to include a scientific reality. Hence, multicultural science education should be a field of study in which many science education researchers are generating new knowledge. The author strives to persuade other researchers to expand their research and teaching efforts into multicultural science education, a blending of social constructivism with multicultural science education. This blending is illustrated in the final section of this article. © 1996 John Wiley & Sons, Inc. 相似文献
5.
Sally Baricaua Gutierez Jinwoong Song Heui-Baik Kim 《Educational Philosophy and Theory》2019,51(6):599-607
This paper discusses the emergence of science education in the seventeenth century with the influences of Joseph Priestley on the Dissenting Academies. Primarily, this paper analyses Priestley’s ideas from some of his letters to scientists during his time and his ideas from his books Miscellaneous Observations Relating to Education (1778) and the Essay on a Course of Liberal Education for Civil and Active Life (1765). As an expository essay, analysis shows that the inclusion of experimental science education dates back from the Dissenting Academies when they explicitly aligned science education for practical life. With Priestley’s advocacy on experimental learning in science, his idea of hands-on science education encouraged other dissenters to seek and understand the changing natural world. His advocacy states that knowledge and understanding of the natural world builds the foundation for rationally evaluating the developments derived from permissible scientific theories. Not setting aside religious studies, Priestley promoted a radical education which ended the restrictions to the privileged and powerful few so that it opened up the access of learning for everyone whose capacity may range from scientific, religious, political, or educational propensities. 相似文献
6.
《Journal of research on educational effectiveness》2013,6(1):103-127
ABSTRACTRandomized experiments are considered the gold standard for causal inference because they can provide unbiased estimates of treatment effects for the experimental participants. However, researchers and policymakers are often interested in using a specific experiment to inform decisions about other target populations. In education research, increasing attention is being paid to the potential lack of generalizability of randomized experiments because the experimental participants may be unrepresentative of the target population of interest. This article examines whether generalization may be assisted by statistical methods that adjust for observed differences between the experimental participants and members of a target population. The methods examined include approaches that reweight the experimental data so that participants more closely resemble the target population and methods that utilize models of the outcome. Two simulation studies and one empirical analysis investigate and compare the methods’ performance. One simulation uses purely simulated data while the other utilizes data from an evaluation of a school-based dropout prevention program. Our simulations suggest that machine learning methods outperform regression-based methods when the required structural (ignorability) assumptions are satisfied. When these assumptions are violated, all of the methods examined perform poorly. Our empirical analysis uses data from a multisite experiment to assess how well results from a given site predict impacts in other sites. Using a variety of extrapolation methods, predicted effects for each site are compared to actual benchmarks. Flexible modeling approaches perform best, although linear regression is not far behind. Taken together, these results suggest that flexible modeling techniques can aid generalization while underscoring the fact that even state-of-the-art statistical techniques still rely on strong assumptions. 相似文献
7.
Stephen Lehman Gregory Schraw Matthew T. McCrudden Kendall Hartley 《Contemporary educational psychology》2007,32(4):569-587
This study examined how seductive details affect on-line processing of a technical, scientific text. In Experiment 1, each sentence from the experimental text was rated for interest and importance. Participants rated seductive details as being more interesting but less important than main ideas. In Experiment 2, we examined the effect of seductive details on reading time and learning. Seductive details reduced the amount of time readers spent reading base text sentences, and hindered recall of important ideas and deeper processing as measured by an essay task. These findings extend previous research [Harp, S. & Mayer, R. E. (1997). Role of interest in learning from scientific text and illustrations: on the distinction between emotional interest and cognitive interest. Journal of Educational Psychology, 89, 92–102; Harp, S. F., & Mayer, R. E. (1998). How seductive details do their damage: a theory of cognitive interest in science learning. Journal of Educational Psychology, 90, 441–434.] to suggest that the negative effects of seductive details’ on comprehension were due to a combination of reduced attentional allocation and disruption of text coherence. 相似文献
8.
Ebru Kaya Sibel Erduran Busra Aksoz Selin Akgun 《International Journal of Science Education》2019,41(1):21-47
A recent framework on nature of science (NOS) is the Family Resemblance Approach (FRA). FRA presents NOS as a cognitive-epistemic and social-institutional system with a set of categories: aims and values, scientific methods, scientific practices, scientific knowledge and social-institutional aspects of science. Although FRA has been problematised philosophically and its implications for science education have been considered by science educators, its empirical adaptations in science education are limited. In order to illustrate the educational adaptations of FRA, we refer to Reconceptualised Family Resemblance Approach to Nature of Science or RFN. We present a study based on a funded pre-service science teacher education project whose aim was to design, implement and evaluate the impact of RFN strategies. Fifteen pre-service teachers participated in a 14-week teacher education intervention that infused RFN. A 70-item questionnaire was designed to investigate the outcomes of the teacher education intervention. Individual interviews with pre-service teachers were also conducted. Quantitative and qualitative data analysis suggest that the teacher education intervention had an overall significant impact on pre-service teachers’ views of NOS. The paper contributes to the understanding of how NOS can be incorporated in science teacher education using a new orientation to NOS based on FRA. 相似文献
9.
Wayne Melville Todd Campbell Xavier Fazio Antonio Stefanile Nicholas Tkaczyk 《Research in Science Education》2014,44(5):751-775
This article examines the influence of a practicum teaching experience on two pre-service science teachers. The research is focused on examining a practicum in a secondary science department that actively promotes the teaching and learning of science as inquiry. We investigated the process through which the pre-service science teachers integrated their practical knowledge, and examined this in the context of the quantified reformed instruction they enacted. Using a mixed methods design, we have quantified these pre-service science teachers’ practice using the Reformed Teaching Observation Protocol (Piburn et al. 2000), in concert with a narrative methodology drawn from in-depth interviews. Our analysis of the data indicates two important conclusions. The first is the importance of a consistently reformed image of science education being presented and practiced by both science teacher educators and cooperating teachers. The second is the recognition that a consistently reformed image may not be sufficient, of itself, to challenge pre-service teachers’ views of science education. Pre-service teachers appear to be heavily influenced by their biographies and own science education. Consequently, it appears the extent to which a pre-service teacher identifies problems of teaching and learning, and then works toward possible resolution, influences their progress in shaping reformed views of science education. 相似文献
10.
针对师范类院校在环境科学实验教学中存在的问题,结合学生的就业需求,设定综合性设计性实验。实验的内容涵盖水、大气、固体废弃物和噪声等常见的环境领域。综合性设计性实验着重于提高学生的实验设计能力、实验仪器使用与维护能力、数据分析与写作能力,最终提高学生的综合实验技能。综合性设计性实验还对实验的成绩评定进行了突破性的改革,锻炼学生的团队协作能力和表达能力。综合性设计性实验的设立最终将会极大地提高师范类院校环境科学专业的办学水平和学生质量。 相似文献
11.
Garry Falloon 《Journal of Science Education and Technology》2017,26(6):613-628
Considerable work over many years has explored the contribution technology can make to science learning, at all levels of education. In the school sector, historically this has focused on the use of fixed, desktop-based or semi-mobile laptop systems for purposes such as experiment data collection or analysis, or as a means of engaging or motivating interest in science. However, the advent of mobile devices such as iPads supported by a huge array of low or no cost apps, means that new opportunities are becoming available for teachers to explore how these resources may be useful for supporting ‘hands on’ science learning. This article reports outcomes from a study of primary (elementary) school students’ use of a series of apps integrated with practical science activities, in a topic exploring Energy concepts. It used an innovative display capture tool to examine how the students used the apps and features of their iPads to scaffold their practical work at different stages during the experiments. Results identify device functions and app-based scaffolds that assisted these students to structure their experiments, understand procedures, think about the influence of variables and communicate and share outcomes. However, they also discovered limitations in the apps’ ability to support conceptual knowledge development, identifying the critical role of teachers and the importance of task structure and design to ensuring conceptual knowledge objectives are met. 相似文献
12.
How do secondary school science teachers justify the model of a particulate nature of matter, and how do the arguments they use relate to historical arguments? To find out, we individually interviewed 11 in‐service secondary school science teachers (certified to teach chemistry and/or physics in secondary school, and with 2 to 30 years of teaching experience) regarding their arguments for the particulate nature of matter and experiments that could demonstrate the existence of particles. The collected data were qualitatively analyzed. Three qualitatively different categories of arguments could be constructed from data: philosophical arguments, indirect experimental arguments, and direct experimental arguments. The indirect experimental arguments which is the largest category could be further divided into qualitatively different subcategories: nonspecific research and experiments, and chemical, physical, and subatomic experiments. Even though several experiments and arguments were suggested by the informants in our study, the arguments regarding the validity of the experiments were quite uncertain and vague. The experiments and arguments were used to corroborate the particulate nature of matter and taken for granted in advance rather than used to justify a model with particles. The outcome was discussed in relation to scientific arguments and experiments and in view of results from previous science education research. Based on our data, teacher education and in‐service teacher training, as well as teacher guides, were suggested to be more elaborate regarding contemporary knowledge, with direct experimental evidence for the particulate nature of matter being presented. 相似文献
13.
14.
Asta B Schram 《International Journal of Science Education》2013,35(15):2619-2638
In recent years, more and more researchers in science education have been turning to the practice of combining qualitative and quantitative methods in the same study. This approach of using mixed methods creates possibilities to study the various issues that science educators encounter in more depth. In this content analysis, I evaluated 18 studies from science education journals as they relate to the definition, design, and overall practice of using mixed methods. I scrutinized a purposeful sample, derived from 3 journals (the International Journal of Science Education, the Journal of Research in Science Teaching, and the Research in Science Education) in terms of the type of data collected, timing, priority, design, the mixing of the 2 data strands in the studies, and the justifications authors provide for using mixed methods. Furthermore, the articles were evaluated in terms of how well they met contemporary definitions for mixed methods research. The studies varied considerably in the use and understanding of mixed methods. A systematic evaluation of the employment of mixed methods methodology was used to identify the studies that best reflected contemporary definitions. A comparison to earlier content analyses of mixed methods research indicates that researchers' knowledge of mixed methods methodology may be increasing. The use of this strategy in science education research calls, however, for an improved methodology, especially concerning the practice of mixing. Suggestions are given on how to best use this approach. 相似文献
15.
Advancements in handheld computing, particularly its portability, social interactivity, context sensitivity, connectivity, and individuality, open new opportunities for immersive learning environments. This article articulates the pedagogical potential of augmented reality simulations in environmental engineering education by immersing students in the roles of scientists conducting investigations. This design experiment examined if augmented reality simulation games can be used to help students understand science as a social practice, whereby inquiry is a process of balancing and managing resources, combining multiple data sources, and forming and revising hypotheses in situ. We provide 4 case studies of secondary environmental science students participating in the program. Positioning students in virtual investigations made apparent their beliefs about science and confronted simplistic beliefs about the nature of science. Playing the game in “real” space also triggered students' preexisting knowledge, suggesting that a powerful potential of augmented reality simulation games can be in their ability to connect academic content and practices with students' physical, lived worlds. The game structure provided students a narrative to think with, although students differed in their ability to create a coherent narrative of events. We argue that Environmental Detectives is 1 model for helping students understand the socially situated nature of scientific practice. 相似文献
16.
衣俊卿 《实验室研究与探索》2005,24(7):1-4,85
阐述了从以高新技术为背景的高等教育发展来看实验条件和实验教学的地位和作用；从学校的学科与专业结构变化来看实验教学地位的提升；从实验教学和实验室现状来看实验教学和实验室建设应解决的问题和做法，包括评估、追踪问效、队伍建设、改革创新等。 相似文献
17.
实验室是现代综合性大学发展的依托 总被引：13，自引：9，他引：13
衣俊卿 《实验室研究与探索》2005,24(6):1-5
阐述了从以高新技术为背景的高等教育发展来看实验条件和实验教学的地位和作用;从学校的学科与专业结构变化来看实验教学地位的提升;从实验教学和实验室现状来看实验教学和实验室建设应解决的问题和做法。包括评估、追踪问效、队伍建设、改革创新等。 相似文献
18.
Sharon Lynch 《科学教学研究杂志》1994,31(2):105-128
This article reviews current policy trends concerning the practice of ability grouping in K–12 science education. Relevant statements of key policy-making, policy-influencing organizations such as the NSTA, AAAS, NSF, the National Research Council, the U.S. Office of Education Department of Civil Rights, NAACP, the National Governors' Association, programs related to the Jacob Javits Grants for the Gifted and Talented, and others are summarized. The author's interpretation of the various positions are presented herein. The article also explores the research base supporting the various policies on grouping by examining selected general research literature on grouping, followed by research that is science education specific. Methodological issues color the research findings. The ethical and pragmatic implications of developing research and policy are discussed. The conclusions are that there is a dearth of recent empirical research specifically related to ability grouping in science, and that the time is ripe for the concerted development of a research agenda by key players in science education reform. Moreover, as controversial and value-laden as the topic is, it should be noted that grouping practices alone are unlikely to influence science education reform unless considered in the context of comprehensive restructuring efforts at the local school level. 相似文献
19.
Ralph E. Heiges 《Peabody Journal of Education》2013,88(1):6-8
This article argues for the need to differentiate between professional and support careers in fields of science, technology, engineering, mathematics, and medicine (STEMM). Using data from the Longitudinal Study of American Youth (LSAY), the article identifies important differences in the nature of the work and responsibility that differentiate the scientific workforce into a professional component and a support component. Further analysis demonstrates that the kind of training and education needed for STEMM support occupations is generally lower and different than the education needed for entrance into a STEMM profession. The LSAY data indicate that the students planning to enter a STEMM profession tend to make their choice earlier, select appropriate courses and programs to obtain professional credentials, and make a substantially longer commitment to educational preparation than do young adults who enter STEMM support occupations. We suggest some policy implications that may flow from this distinction. 相似文献
20.
Mansoor Niaz 《科学教学研究杂志》2000,37(5):480-508
Research in science education has recognized the importance of history and philosophy of science. Given this perspective, it is important to analyze how general chemistry textbooks interpret Millikan's oil drop experiment. This study has the following objectives: (a) elaboration of a history and philosophy of science framework based on a rational reconstruction of experimental observations that led to the Millikan–Ehrenhaft controversy; (b) formulation of six criteria based on the framework, which could be useful in the evaluation of chemistry textbooks; and (c) evaluation of 31 chemistry textbooks based on the criteria. Results obtained showed that most textbooks lacked a history and philosophy of science framework and did not deal adequately with the following aspects. (a) The Millikan–Ehrenhaft controversy can open a new window for students, demonstrating how two well‐trained scientists can interpret the same set of data in two different ways. (b) Millikan's perseverance with his guiding assumption shows how scientists can overcome difficulties with anomalous data. (c) Millikan's methodology illustrates what modern philosophers of science consider important issues of falsification, confirmation, and suspension of disbelief. (d) The experiment is difficult to perform even today, owing to the incidence of a series of variables. (e) Millikan's major contribution consists of discovering the experiment to provide confirmation for the elementary electrical charge. © 2000 John Wiley & Sons, Inc. J Res Sci Teach, 37: 480–508, 2000. 相似文献