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Open Access. Powered by Scholars. Published by Universities.®

2015

Physical Sciences and Mathematics

Portland State University

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Articles 1 - 9 of 9

Full-Text Articles in Education

Next-Generation Scientists Get A Taste Of Their Future Careers, Patrick M. Edwards, Linda A. George, Matthew Mctammany Dec 2015

Next-Generation Scientists Get A Taste Of Their Future Careers, Patrick M. Edwards, Linda A. George, Matthew Mctammany

Environmental Science and Management Faculty Publications and Presentations

Article provides an overview of the middle and high school poster session that took place during the 2014 Joint Aquatic Sciences Meeting (JASM) in Portland, Oregon. The poster session provided the students with opportunity to participate in the research process and prepare their posters.


The Design And Validation Of A Group Theory Concept Inventory, Kathleen Mary Melhuish Aug 2015

The Design And Validation Of A Group Theory Concept Inventory, Kathleen Mary Melhuish

Dissertations and Theses

Within undergraduate mathematics education, there are few validated instruments designed for large-scale usage. The Group Concept Inventory (GCI) was created as an instrument to evaluate student conceptions related to introductory group theory topics. The inventory was created in three phases: domain analysis, question creation, and field-testing. The domain analysis phase included using an expert consensus protocol to arrive at the topics to be assessed, analyzing curriculum, and reviewing literature. From this analysis, items were created, evaluated, and field-tested. First, 383 students answered open-ended versions of the question set. The questions were converted to multiple-choice format from these responses and disseminated …


Localized Ecological And Educational Effects Of Environmental Service-Learning In Portland, Oregon, Steven Matthew Braun Jun 2015

Localized Ecological And Educational Effects Of Environmental Service-Learning In Portland, Oregon, Steven Matthew Braun

Dissertations and Theses

Environmental service-learning is an intentional educational experience(s) wherein learners engage in meaningful activities designed to serve the environment. Environmental service-learning activities vary according to their learning and service goals and include ecomanagement, persuasion, legal action, economic action and political action. The purpose of this mixed methods research was to explore the ecological and educational impacts of grades 6-12 environmental education, with special attention to environmental service-learning throughout Portland, Oregon.

Ecological impacts considered restoration and conservation outcomes of several environmental service-learning programs including plant communities, soils, litter removal and trail maintenance. Educational outcomes considered aspects of environmental literacy including locus of …


An Investigation Of The Role Of Alternate Numeration Systems In Preservice Teacher Mathematics Content Courses, Jodi I. Fasteen Jun 2015

An Investigation Of The Role Of Alternate Numeration Systems In Preservice Teacher Mathematics Content Courses, Jodi I. Fasteen

Dissertations and Theses

Alternate numeration systems are common in preservice teacher (PST) mathematics curricula, but there is limited research on how to leverage alternate systems to promote the development of mathematical knowledge for teaching. I analyzed the role of alternate numeration systems in three ways. I conducted a thematic analysis of current PST textbooks to consider the role of alternate numeration systems in written curricula. I conducted a teaching experiment to analyze PSTs' mathematical activity as they engaged with a base five task sequence to reinvent an algorithm for multiplication. And I introduced problematizing mathematical contexts as a design heuristic, situating this within …


Developing Key Sustainability Competencies Through Real-World Learning Experiences: Evaluating Community Environmental Services, Erin Lorene Anderson May 2015

Developing Key Sustainability Competencies Through Real-World Learning Experiences: Evaluating Community Environmental Services, Erin Lorene Anderson

Dissertations and Theses

This study focuses on sustainability in higher education and the competencies essential to address sustainability issues. Because sustainability issues are complex, "wicked", and dynamic, sustainability education programs need to reflect the interdisciplinary and collaborative nature of the field. Graduates who are competent in sustainability research and problem solving will have the knowledge, skills, and attitude necessary to analyze a sustainability problem systemically and comprehensively, then will construct and implement interventions to reach optimal sustainability solutions. To prepare graduates, sustainability education programs should facilitate the development of key sustainability competencies (Wiek, Withycombe, & Redman, 2011). Such programs provide an interdisciplinary approach …


Peripheral No More: Repositioning Narratives For Empowerment And Change In Sustainability Education, Rell G. Ohlson Apr 2015

Peripheral No More: Repositioning Narratives For Empowerment And Change In Sustainability Education, Rell G. Ohlson

Leadership for Sustainability Education Comprehensive Papers

The field of sustainability education challenges dominant modes of thought, with a particular emphasis on the need for diversity and "multiple perspectives" in order to confront complex issues (Capra, 2005; Sterling, 2001; Wheatley, 2006). If this is the case, why are certain perspectives still missing and what narratives have been given prominence? This comprehensive paper examines the problems of a dominant narrative in sustainability education. In order for sustainability education to be truly transformative and empowering for students, leaders, and their communities, the narrative of sustainability must be repositioned from a dominant, white, middle-class context to one that affirms, values …


Intersections Of Critical Systems Thinking And Community Based Participatory Research In Developing A Web Site For Autistic Adults, Dora Madeline Raymaker Mar 2015

Intersections Of Critical Systems Thinking And Community Based Participatory Research In Developing A Web Site For Autistic Adults, Dora Madeline Raymaker

Dissertations and Theses

People with disabilities, including those on the autism spectrum, comprise the world's largest minority and experience significant inequities in Internet use. Existing standards for accessible web sites are necessary but not sufficient without the direct engagement of end users in identifying access needs. Yet little is known about methods for effective engagement, and there are no systematically derived Web accessibility guidelines for autistic end users. Here I explore a hybrid approach to direct engagement using critical systems thinking (CST) and community based participatory research (CBPR) during the co-development of a healthcare-focused web site by the Academic Autism Spectrum Partnership in …


Putting Impact First: Community-University Partnerships To Advance Authentic Neighborhood Sustainability, Michelle L. Holliday, Tony Defalco, Jacob Sherman Jan 2015

Putting Impact First: Community-University Partnerships To Advance Authentic Neighborhood Sustainability, Michelle L. Holliday, Tony Defalco, Jacob Sherman

Institute for Sustainable Solutions Publications and Presentations

This article profiles a partnership between the Living Cully ecodistrict and Portland State University’s Sustainable Neighborhoods Initiative. The case studies presented in this article explore how Living Cully leveraged PSU assets to advance their goals, highlighting successes and lessons learned. This article also addresses how the partnership was formed, what makes the partnership innovative, the role of interdisciplinary/intercommunity organizational strategies, and how the community partner commits to urban sustainability and social justice.


Infrared Radiography: Modeling X-Ray Imaging Without Harmful Radiation, Otto Zietz, Elliot E. Mylott, Ralf Widenhorn Jan 2015

Infrared Radiography: Modeling X-Ray Imaging Without Harmful Radiation, Otto Zietz, Elliot E. Mylott, Ralf Widenhorn

Physics Faculty Publications and Presentations

Planar x-ray imaging is a ubiquitous diagnostic tool and is routinely performed to diagnose conditions as varied as bone fractures and pneumonia. The underlying principle is that the varying attenuation coefficients of air, water, tissue, bone, or metal implants within the body result in non-uniform transmission of x-ray radiation. Through the detection of transmitted radiation, the spatial organization and composition of materials in the body can be ascertained. In this paper, we describe an original apparatus that teaches these concepts by utilizing near infrared radiation and an up-converting phosphorescent screen to safely probe the contents of an opaque enclosure.