Validity of the Actical activity monitor for assessing steps and energy expenditure during walking     

Marquell Johnson  Kristin Meltz  Kayla Hart  Molly Schmudlach  Lauren Clarkson  Kate Borman 《Journal of sports sciences》2015,33(8):769-776

This study examined the validity of the Actical accelerometer step count and energy expenditure (EE) functions in healthy young adults. Forty-three participants participated in study 1. Actical step counts were compared to actual steps taken during a 200 m walk around an indoor track at self-selected pace and during treadmill walking at different speeds (0.894, 1.56 and 2.01 m · s^–1) for 5 min. The Actical was also compared to three pedometers. For study 2, 15 participants from study 1 walked on a treadmill at their predetermined self-selected pace for 15 min. Actical EE was compared to EE measured by indirect calorimetry. One-way analysis of variance and t-tests were used to examine differences. There were no statistical difference between Actical steps and actual steps in self-selected pace walking and during treadmill walking at moderate and fast speeds. During treadmill walking at slow speed, the Actical step counts significantly under predicted actual steps taken. For study 2, there was no statistical difference between measured EE and Actical-recorded EE. The Actical provides valid estimates of step counts at self-selected pace and walking at constant speeds of 1.56 and 2.01 m · s^–1. The Actical underestimates EE of walking at constants speeds ≥1.38 m · s^–1.  相似文献   

Toward an Understanding of Authentic Learning: Student Perceptions of an Authentic Classroom   总被引：1，自引：0，他引：1  

Nicaise  Molly  Gibney  Terresa  Crane  Michael 《Journal of Science Education and Technology》2000,9(1):79-94

Advocates of educational reform often describe classroom instruction as inauthentic. That is, most classroom learning activities are structured around artificial contexts for learning, and students only engage in tasks and remember information at superficial levels. Some teachers are attempting to break traditional classroom practices by creating authentic contexts for learning. To date, most of the research on authentic classrooms has described the processes teachers have used to develop the classroom environment (learning activities, resources, etc.); however, few have examined authentic classrooms from the students' perspective: “What do students think about authentic classrooms?” The purpose of this qualitative study was to examine a unique learning environment at a large, Midwest high school to understand how students perceived that environment. Most of the students reported a positive experience and described the classroom as fun and exciting with real-world relevance. However, there were several students who did not share these views, and many students were not successful.

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Knowledge constructing through hypermedia authoring   总被引：1，自引：0，他引：1  

Molly Nicaise  Michael Crane 《Educational technology research and development : ETR & D》1999,47(1):29-50

According to prominent learning theorists, learning is much more than gathering information in a well-designed, teacher-centered environment; learning is promoted when students pursue individual interests, when they build on prior knowledge, and when they engage in hands-on and authentic activity. Although a great deal of literature exists describing ideals such as these, research examining the implementation of these ideals in classrooms is scarce, and using technology for more than information giving is even scarcer. The purpose of this study was to examine a graduate course at a large, Midwestern university to discern how educational theory translates into classroom practice. In the course, students learned about educational theory by designing and creating a hypermedia chapter for a World Wide Web-based book. Qualitative data were collected across a 16-week semester and revealed both student and teacher perspectives regarding the course, including the strengths and limitations of a student-as-multimedia-author approach. The findings indicated that most all students were highly satisfied with the course, that some transferred learning, and that students developed skills and knowledge with instructional design, educational theory, and technology.  相似文献   

Nicole Kidman. Pam Cook. London: Palgrave Macmillan, 2012.     

Molly Swiger 《Journal of American culture (Malden, Mass. : 2003)》2013,36(2):147-148

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Transitions: The Development of Children of Immigrants     

Molly E. McManus 《Journal of Latinos & Education》2018,17(3):288-289

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Student resistance movements in higher education: an analysis of the depiction of Black Lives Matter student protests in news media     

Meseret F. Hailu  Molly Sarubbi 《International journal of qualitative studies in education》2019,32(9):1108-1124

Abstract

Popular media shapes societal perceptions and discourse. The growing use of news media in higher education practices (outreach, admissions, and campus communication) have heightened the need for institutional leadership to not only understand the general impact of popular media but also to comprehend students’ representation, as well as the acquisition and dissemination of media content. In this study, authors present a media content analysis of newspaper coverage of the Black Lives Matter (BLM) movement in the well-known periodical, the Chronicle of Higher Education. Ultimately, this study demonstrates (1) organizational leadership can be influenced and disrupted to promote racial justice and (2) the discursive treatment of the BLM in popular media and, and by extension, in the United States’ public imagination. Overall, this study suggests that in situations where institutional policies perpetuate racial inequity, BLM student movements have the capacity to complicate existing discourse about Blackness in higher education and catalyze substantial social change.  相似文献   

Contextual Factors Related to Math Anxiety in Second-Grade Children     

Molly M. Jameson 《Journal of Experimental Education》2013,81(4):518-536

As the United States falls farther behind other countries in standardized math assessments, the author seeks to understand why U.S. students perform so poorly. One of the possible explanations to U.S. students’ poor math performance may be math anxiety. However, math anxiety in elementary school children is a neglected area in the research. The author aimed to close the gap in knowledge about math anxiety in children by examining contextual factors related to math anxiety in second-grade children. The author used the theory of triadic reciprocity as the theoretical model in this study in which children (n = 91) and their parents (n = 81) completed a series of self-report measures on math anxiety, math self-concept, reading self-concept, math self-efficacy, and aspects of the home math environment. Results indicated that the strongest predictor of math anxiety in second-grade children was their level of math self-concept. The addition of environmental factors did not significantly increase the amount of variance explained in math anxiety.  相似文献   

Using automated analysis to assess middle school students' competence with scientific argumentation     

Christopher D. Wilson  Kevin C. Haudek  Jonathan F. Osborne  Zoë E. Buck Bracey  Tina Cheuk  Brian M. Donovan  Molly A. M. Stuhlsatz  Marisol M. Santiago  Xiaoming Zhai 《科学教学研究杂志》2024,61(1):38-69

Argumentation is fundamental to science education, both as a prominent feature of scientific reasoning and as an effective mode of learning—a perspective reflected in contemporary frameworks and standards. The successful implementation of argumentation in school science, however, requires a paradigm shift in science assessment from the measurement of knowledge and understanding to the measurement of performance and knowledge in use. Performance tasks requiring argumentation must capture the many ways students can construct and evaluate arguments in science, yet such tasks are both expensive and resource-intensive to score. In this study we explore how machine learning text classification techniques can be applied to develop efficient, valid, and accurate constructed-response measures of students' competency with written scientific argumentation that are aligned with a validated argumentation learning progression. Data come from 933 middle school students in the San Francisco Bay Area and are based on three sets of argumentation items in three different science contexts. The findings demonstrate that we have been able to develop computer scoring models that can achieve substantial to almost perfect agreement between human-assigned and computer-predicted scores. Model performance was slightly weaker for harder items targeting higher levels of the learning progression, largely due to the linguistic complexity of these responses and the sparsity of higher-level responses in the training data set. Comparing the efficacy of different scoring approaches revealed that breaking down students' arguments into multiple components (e.g., the presence of an accurate claim or providing sufficient evidence), developing computer models for each component, and combining scores from these analytic components into a holistic score produced better results than holistic scoring approaches. However, this analytical approach was found to be differentially biased when scoring responses from English learners (EL) students as compared to responses from non-EL students on some items. Differences in the severity between human and computer scores for EL between these approaches are explored, and potential sources of bias in automated scoring are discussed.  相似文献   

Do charismatic presidents influence college applications and alumni donations? Organizational identity and performance in US higher education     

Michael N. Bastedo  Elias Samuels  Molly Kleinman 《Higher Education》2014,68(3):397-415

The effect of charismatic leadership on organizational performance is contested. Yet despite the lack of consistent evidence of the value of charismatic leadership to organizations, presidential searches have increasingly favored charismatic candidates. This study shows how organizational identity mediates the relationship between charismatic leadership and organizational performance. Among religious colleges, but not among private colleges considered overall, there is a positive relationship between presidents’ charismatic leadership and the number of applications for enrollment and the amount of financial donations colleges receive. This suggests that among organizations with atypical identities, charismatic leadership can be interpreted as a meaningful signal of organizational performance.  相似文献   

The Intersection of Inquiry-Based Science and Language: Preparing Teachers for ELL Classrooms     

Molly Weinburgh  Cecilia Silva  Kathy Horak Smith  Judy Groulx  Jenesta Nettles 《Journal of Science Teacher Education》2014,25(5):519-541

As teacher educators, we are tasked with preparing prospective teachers to enter a field that has undergone significant changes in student population and policy since we were K-12 teachers. With the emphasis placed on connections, mathematics integration, and communication by the New Generation Science Standards (NGSS) (Achieve in Next generation science standards, 2012), more research is needed on how teachers can accomplish this integration (Bunch in Rev Res Educ 37:298–341, 2013; Lee et al. in Educ Res 42(4):223–233, 2013). Science teacher educators, in response to the NGSS, recognize that it is necessary for pre-service and in-service teachers to know more about how instructional strategies in language and science can complement one another. Our purpose in this study was to explore a model of integration that can be used in classrooms. To do this, we examined the change in science content knowledge and academic vocabulary for English language learners (ELLs) as they engaged in inquiry-based science experience utilizing the 5R Instructional Model. Two units, erosion and wind turbines, were developed using the 5R Instructional Model and taught during two different years in a summer school program for ELLs. We analyzed data from interviews to assess change in conceptual understanding and science academic vocabulary over the 60 h of instruction. The statistics show a clear trend of growth supporting our claim that ELLs did construct more sophisticated understanding of the topics and use more language to communicate their knowledge. As science teacher educators seek ways to prepare elementary teachers to help preK-12 students to learn science and develop the language of science, the 5R Instructional Model is one pathway.  相似文献