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41.
Kevin Lai Julio Cabrera Jonathan M. Vitale Jacquie Madhok Robert Tinker Marcia C. Linn 《Journal of Science Education and Technology》2016,25(4):665-681
Interpreting and creating graphs plays a critical role in scientific practice. The K-12 Next Generation Science Standards call for students to use graphs for scientific modeling, reasoning, and communication. To measure progress on this dimension, we need valid and reliable measures of graph understanding in science. In this research, we designed items to measure graph comprehension, critique, and construction and developed scoring rubrics based on the knowledge integration (KI) framework. We administered the items to over 460 middle school students. We found that the items formed a coherent scale and had good reliability using both item response theory and classical test theory. The KI scoring rubric showed that most students had difficulty linking graphs features to science concepts, especially when asked to critique or construct graphs. In addition, students with limited access to computers as well as those who speak a language other than English at home have less integrated understanding than others. These findings point to the need to increase the integration of graphing into science instruction. The results suggest directions for further research leading to comprehensive assessments of graph understanding. 相似文献
42.
Marcia A. Barnes Karla K. Stuebing Jack M. Fletcher Amy E. Barth David J. Francis 《Journal of research on educational effectiveness》2016,9(2):153-172
ABSTRACTDifficulties suppressing previously encountered but currently irrelevant information from working memory characterize less skilled comprehenders in studies in which they are matched to skilled comprehenders on word decoding and nonverbal IQ. These “extreme” group designs are associated with several methodological issues. When sample size permits, regression approaches permit a more accurate estimation of effects. Using data for students in Grades 6 through 12 (n = 766), regression techniques assessed the significance and size of the relation of suppression to reading comprehension across the distribution of comprehension skill. After accounting for decoding efficiency and nonverbal IQ, suppression, measured by performance on a verbal proactive interference task, accounted for a small amount of significant unique variance in comprehension (less than 1%). A comparison of suppression in less skilled comprehenders matched to more skilled comprehenders (48 per group) on age, word reading efficiency, and nonverbal IQ did not show significant group differences in suppression. The implications of the findings for theories of reading comprehension and for informing comprehension assessment and intervention are discussed. 相似文献
43.
Adam Cheeseman Jaylene Murray Marcia McKenzie 《Environmental Education Research》2019,25(12):1697-1712
AbstractThis paper provides a review of the current literature that examines the uptake of sustainability policies in higher education. Articles were retrieved from both ERIC and Scopus databases and then manually reviewed to ensure that they focused on each of: higher education; sustainability; and policy. A total of 91 articles were analysed using a multi-stage process that involved sorting data according to typologies (i.e. temporal, terminology, methodology, geography), coding the text of the articles based on topical content, and an indexing method used to label data for further analysis and the development of broader code categories. Results suggest that drivers and barriers associated with the integration of sustainability policy in higher education are well known; yet increased research is needed to understand best practices and processes by which sustainability can be furthered through higher education policy. In addition, findings demonstrate the need for future research to focus on various aspects of the policy process, including policy development and enactment, and on implications of policy for practice. While there have been some reviews of sustainability policy in higher education research to date, this review contributes to this literature by highlighting research primarily focused on sustainability policy within higher education. 相似文献
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Marcia L Ashbaugh 《TechTrends》2013,57(5):74-82
An argument is made in this article for a link between leadership and innovation, when innovation is an outcome of the work approaches and practices that underpin an educational technologist’s academic course designs. The practice of instructional design (ID) is continually being challenged to rethink its conceptualization of academic course designs, especially for web-based affordances, to release designers to new processes that more align with the modern use of communication devices and networks. I suggest here that the time has come for ID to leave non-adaptive, linear thinking behind not only in how and when to prescribe certain technologies but in how to approach educational change with an adaptation of personal leadership that drives innovation (Ashbaugh, 2012). 相似文献
46.
Abstract The advent of the Internet alleviates the access bottleneck to TV distribution channels and softens licensing requirements. This lowers entry barriers to TV markets via the Internet in various forms. This paper takes the German TV sector as an example to analyse the attractiveness of TV markets for new entrants. A sequential framework for entering TV markets is introduced. The skills set of an Internet‐based TV provider for such an entry is examined. Technical feasibility, legal aspects, and potential sources of revenue are considered. Potential above average profits due to the market's oligopolistic structure, as well as an increased contestability thanks to lower market entry barriers seem to render the German TV market attractive for new entrants. In early 2002, Internet‐based TV still faced severe technical and legal constraints. The analysis suggests that once these constraints have been overcome, the Internet could be an attractive additional distribution channel for some types of television content. While existing revenue sources from the TV sector are expected to be transferable to a certain degree, the value of innovative revenue sources based on online sales cannot yet be determined. This value will depend on the future acceptance of interactivity by the viewer (e. g. Owen 1999). 相似文献
47.
Marcia Salmon 《Cataloging & classification quarterly》2013,51(1):49-51
Automation and economic cutbacks are forcing many large libraries to alter traditional organizational structures. This paper describes the reorganization of technical and public service activities in the University of Illinois Library at Urbana-Champaign. The decentralization of original cataloging functions is examined, particularly as implemented in the Education and Social Science Library (ESSL), and the effect on management of original cataloging activities and cataloging norms is discussed. 相似文献
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Marcia Linn 《International Journal of Science Education》2013,35(6):727-758
Over the past 25 years, information and communication technologies have had a convoluted but ultimately advantageous impact on science teaching and learning. To highlight the past, present, and future of technology in science education, this paper explores the trajectories in five areas: science texts and lectures; science discussions and collaboration; data collection and representation; science visualization; and science simulation and modeling. These trajectories reflect two overall trends in technological advance. First, designers have tailored general tools to specific disciplines, offering users features specific to the topic or task. For example, developers target visualization tools to molecules, crystals, earth structures, or chemical reactions. Second, new technologies generally support user customization, enabling individuals to personalize their modeling tool, Internet portal, or discussion board. In science education, designers have tailored instructional resources based on advances in understanding of the learner. More recently, designers have created ways for teachers and students to customize learning tools to specific courses, geological formations, interests, or learning preferences. 相似文献
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