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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
321

Examining student understanding of the science of a societal issue in Botswana: Effects of ultraviolet radiation on the human skin

Suping, Shanah Mompoloki 21 June 2004 (has links)
No description available.
322

SCIENCE TEACHERS' ASSESSMENT PRACTICES AND THEIR PERCEPTIONS OF HOW SCIENCE EDUCATION REFORM AND HIGH STAKES TESTS AFFECT THEIR INSTRUCTIONAL DECISIONS

Feitler, Michele 18 May 2010 (has links)
No description available.
323

Scientific Literacy in Food Education| Gardening and Cooking in School

Strohl, Carrie A. 17 March 2016 (has links)
<p>Recent attention to socio-scientific issues such as sustainable agriculture, environmental responsibility and nutritional health has spurred a resurgence of public interest in gardening and cooking. Seen as contexts for fostering scientific literacy?the knowledge domains, methodological approaches, habits of mind and discourse practices that reflect one?s understanding of the role of science in society, gardening and cooking are under-examined fields in science education, in part, because they are under-utilized pedagogies in school settings. Although learning gardens were used historically to foster many aspects of scientific literacy (e.g., cognitive knowledge, norms and methods of science, attitudes toward science and discourse of science), analysis of contemporary studies suggests that science learning in gardens focuses mainly on science knowledge alone. Using multiple conceptions of scientific literacy, I analyzed qualitative data to demonstrate how exploration, talk and text fostered scientific literacy in a school garden. Exploration prompted students to engage in scientific practices such as making observations and constructing explanations from evidence. Talk and text provided background knowledge and accurate information about agricultural, environmental and nutritional topics under study. Using a similar qualitative approach, I present a case study of a third grade teacher who explicitly taught food literacy through culinary arts instruction. Drawing on numerous contextual resources, this teacher created a classroom community of food practice through hands-on cooking lessons, guest chef demonstrations, and school-wide tasting events. As a result, she promoted six different types of knowledge (conceptual, procedural, dispositional, sensory, social, and communal) through leveraging contextual resources.This case study highlights how food literacy is largely contingent on often-overlooked mediators of food literacy: the relationships between participants, the activity, and the type of knowledge invoked. Scientific literacy in food education continues to be a topic of interest in the fields of public health and of sustainable agriculture, as well as to proponents of the local food movement. This dissertation begins to map a more cohesive and comprehensive approach to gardening and cooking implementation and research in school settings.
324

Gender and Middle School Science| An Examination of Intrinsic and Extrinsic Factors Affecting Achievement

Austin, Jennifer 31 March 2016 (has links)
<p> Gender differences in middle school science were examined utilizing a mixed-methods approach. The intrinsic and extrinsic experiences of male and female non-gifted high-achieving students were investigated through the administration of the CAIMI, student interviews, teacher questionnaires, observations, and document examination.</p><p> Male and female students were selected from a rural Northeast Georgia school district based on their high performance and high growth during middle school science. Eighty-three percent of the student participants were white and 17% were Hispanic. Half of the male participants and one third of the female participants were eligible for free and reduced meals.</p><p> Findings revealed that male participants were highly motivated, whereas female participants exhibited varying levels of motivation in science. Both male and female students identified similar instructional strategies as external factors that were beneficial to their success. Due to their selection by both genders, these instructional strategies were considered to be gender-neutral and thereby useful for inclusion within coeducational middle school science classrooms.</p>
325

African American student perception of persistence in engineering at a predominantly white institution

Bennett, Sean T. 09 July 2016 (has links)
<p> This study examines African American student perceptions of persistence in engineering. The research design is methodologically qualitative using a purposefully selected population of engineering students. Semi-structured interviews were designed to develop an in-depth understanding of what completion of the engineering degree means to African American engineering students. This research seeks insight into the linkages between African American student perceptions of persistence as it relates to both the academic and social culture of the engineering department. </p><p> Vincent Tinto&rsquo;s model of Institutional Departure (1975, 1987) is one of the most commonly cited models of persistence in higher education (Braxton, Milem, Sullivan, 2000). Tinto&rsquo;s model was leveraged in this study to understand perceptions obtained through student interviews. Tinto suggests that exploration of student goal commitment and perceptions of institutional commitment are key to understanding student persistence. Results of this study suggest that African American students have perceptions about the university that may influence the decision to persist in engineering. Ultimately, this study may prove useful to researchers and administrators interested in improving access and success for African American engineering students.</p>
326

Meanings teachers make of teaching science outdoors as they explore citizen science

Benavides, Aerin Benavides 14 June 2016 (has links)
<p> This descriptive case study examined the meanings public elementary school teachers (N = 13) made of learning to enact citizen science projects in their schoolyards in partnership with a local Arboretum. Utilizing Engestr&ouml;m&rsquo;s (2001) framework of cultural-historical activity theory (CHAT), the Arboretum&rsquo;s outreach program for area Title 1 schools was viewed as an activity system composed of and acting in partnership with the teachers. The major finding was that teachers designed and mastered new ways of teaching (expansive learning) and transformed their citizen science activity to facilitate student engagement and learning. I highlight four important themes in teachers&rsquo; expansive learning: (a) discussion, (b) inclusion, (c) integration, and (d) collaboration. Teacher learning communities formed when colleagues shared responsibilities, formed mentor/mentee relationships, and included student teachers and interns in the activity. This program could serve as a model for elementary school citizen science education, as well as a model for professional development for teachers to learn to teach science and Environmental Education outdoors.</p>
327

Self-efficacy of college freshmen engaged in STEM outreach

Patchin, Stephen H. 05 May 2016 (has links)
<p>Not since the Cold War and the launch of Sputnik has there been such a focus on producing college graduates in fields related to science, technology, engineering, and mathematics (STEM). As manually driven careers disappear, new diverse careers are created and they have one thing in common, STEM. As students move into these challenging curriculums they will need to have faith in their abilities to achieve their goals. This self-efficacy is vital component for their collegiate and career success. This mixed methods study examines the unique pre-college STEM outreach phenomenon called Mind Trekkers. Mind Trekkers uses the `WOW? of experiential learning in the areas of STEM to motivate K-12 students to engage in STEM related fields. The focus of the study is on the first-year college freshmen that join this program, becoming STEM serviceteers, and how being part of this STEM phenomenon impacts their self-efficacy. The findings can be summed up in a quote I get to help people understanding in a different way than I would if I was just doing volunteering like I did in high school. It?s cool. I just love it and it gives me the confidence that what I am doing is the right thing here at (the university). (Jean) The results of the study indicate that the Mind Trekkers program acted as a catalyst to increase the self-efficacy of the students that participated in it, through personal social and academic impact.
328

Argumentation in Science Class| Its Planning, Practice, and Effect on Student Motivation

Taneja, Anju 07 July 2016 (has links)
<p>Studies have shown an association between argumentative discourse in science class, better understanding of science concepts, and improved academic performance. However, there is lack of research on how argumentation can increase student motivation. This mixed methods concurrent nested study uses Bandura&rsquo;s construct of motivation and concepts of argumentation and formative feedback to understand how teachers orchestrate argumentation in science class and how it affects motivation. Qualitative data was collected through interviews of 4 grade-9 science teachers and through observing teacher-directed classroom discourse. Classroom observations allowed the researcher to record the rhythm of discourse by characterizing teacher and student speech as teacher presentation (TP), teacher guided authoritative discussion (AD), teacher guided dialogic discussion (DD), and student initiation (SI). The Student Motivation Towards Science Learning survey was administered to 67 students before and after a class in which argumentation was used. Analysis of interviews showed teachers collaborated to plan argumentation. Analysis of discourse identified the characteristics of argumentation and provided evidence of students&rsquo; engagement in argumentation in a range of contexts. Student motivation scores were tested using Wilcoxon signed rank tests and Mann-Whitney U-tests, which showed no significant change. However, one construct of motivation&mdash;active learning strategy&mdash;significantly increased. Quantitative findings also indicate that teachers&rsquo; use of multiple methods in teaching science can affect various constructs of students&rsquo; motivation. This study promotes social change by providing teachers with insight about how to engage all students in argumentation. </p>
329

The development of library and information science through books published in Indonesia, 1952-2005

Laksmi January 2006 (has links)
This version of the paper contains an appendix with a list of book titles that was omitted from the version published in the conference proceedings. / The aim of this study is to analyze the development of library and information science through its publications written by librarians, scholars, and others who are interest to the field in Indonesia since 1952 to 2005. The book publication is limited to the scientific books that contain the knowledge of the library and information science. The analysis is focused on the kind of books, the subjects, the publication, the originality of books, and the writers. The study uses the content analysis approach that is named as bolometric study. This knowledge is needed as references to develop the science and to create more literatures with the various, innovative, and constructive ideas in the future. This version of the paper contains an appendix with a list of book titles that was omitted from the version published in the conference proceedings.
330

Understanding the foundation: The state of generalist search education in library schools as related to the needs of expert searchers in medical libraries

Nicholson, Scott January 2005 (has links)
Purpose: Explore the current state of generalist search education in library schools and consider that foundation in respect to the Medical Library Associationâ s statement on expert searching. Setting / Subjects: Syllabi from courses with significant searching components. Ten of the top library schools, as determined by the U.S. News and World Report rankings. Methodology: Mixed methods, but primarily quantitative bibliometric methods. Results: The educational focus in these searching components was on understanding the generalist searching resources and typical users, and performing a reflective search through application of search strategies, controlled vocabulary, and logic appropriate to the search tool. There is also a growing emphasis on Web-based search tools and a movement away from traditional set-based searching and toward free-text search strategies. While there is a core set of authors used in these courses, there is no core set of readings. Discussion/conclusion: While library schools provide a strong foundation, there is still need for future medical librarians to take courses that introduce them to the resources, settings, and users associated with medical libraries. In addition, as more emphasis is placed on Web-based search tools and free-text searching, instructors of the specialist medical informatics courses will need to focus on teaching traditional search methods appropriate for common tools in the medical domain.

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