The Impact of Video Length on Learning in a Middle-Level Flipped Science Setting: Implications for Diversity Inclusion     

Krista Slemmons  Kele Anyanwu  Josh Hames  Dave Grabski  Jeffery Mlsna  Eric Simkins  Perry Cook 《Journal of Science Education and Technology》2018,27(5):469-479

Popularity of videos for classroom instruction has increased over the years due to affordability and user-friendliness of today’s digital video cameras. This prevalence has led to an increase in flipped, K-12 classrooms countrywide. However, quantitative data establishing the appropriate video length to foster authentic learning is limited, particularly in middle-level classrooms. We focus on this aspect of video technology in two flipped science classrooms at the middle school level to determine the optimal video length to enable learning, increase retention and support student motivation. Our results indicate that while assessments directly following short videos were slightly higher, these findings were not significantly different from scores following longer videos. While short-term retention of material did not seem to be influenced by video length, longer-term retention for males and students with learning disabilities was higher following short videos compared to long as assessed on summative assessments. Students self-report that they were more engaged, had enhanced focus, and had a perceived higher retention of content following shorter videos. This study has important implications for student learning, application of content, and the development of critical thinking skills. This is particularly paramount in an era where content knowledge is just a search engine away.  相似文献   

Mirror Worlds: Examining the Affordances of a Next Generation Immersive Learning Environment     

Aakash Gautam  Daron Williams  Krista Terry  Kelly Robinson  Phyllis Newbill 《TechTrends》2018,62(1):119-125

As technologies continue to develop and evolve, it is imperative that instructional technologists, learning scientists, and educators involved with examining learning affordances of emerging technologies investigate the potential of innovative environments to promote and facilitate learning. This paper, as such, will describe a newly developed immersive, mixed-reality learning environment at Virginia Tech. The Mirror Worlds project, a cutting edge mixed-reality virtual world will be described in terms of the potential for this type of environment to engage participants in authentically situated social and embodied learning activities.  相似文献   

Patterns of peer scaffolding in technology-enhanced inquiry classrooms: application of social network analysis     

Shin  Suhkyung  Brush  Thomas A.  Glazewski  Krista D. 《Educational technology research and development : ETR & D》2020,68(5):2321-2350

The purpose of this study was to identify types and patterns of peer scaffolding that occur during inquiry-based learning (IBL) group activities. It employed a single instrumental case approach that integrated quantitative and qualitative analyses of data gathered from 21 students in a ninth grade biology course. A verbal analysis, a content analysis, and a social network analysis (SNA) were performed to identify patterns in group interactions and refine emergent themes. First, nine types of peer scaffolding were identified and found to serve the goals of direction maintenance, cognitive structuring, and simplification. Second, three different patterns related to the high, mixed, and low prior knowledge levels of each group were identified. The high prior knowledge group provided peer scaffolding that focused attention on considerations key to developing their arguments, and this scaffolding may have improved the group’s work. In the mixed prior knowledge group, the students with greater prior knowledge were likely to support those with less prior knowledge. Together, these findings indicate the way students are grouped may impact observable patterns in peer scaffolding. Identifying the difficulties that learners face and the assistance they seek could help instructional designers and teachers identify areas in which students need support during IBL group activities. This study informs educators and practitioners of effective strategies for designing and implementing peer scaffolding to assist inquiry activities in technology-enhanced classroom settings.

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Behavioral CRs elicited by a lithium- or an amphetamine-paired contextual test chamber     

Linda A. Parker  Karen Hills  Krista Jensen 《Learning & behavior》1984,12(3):307-315

The behavioral CRs elicited by a drug-paired contextual cue in rats were measured in a series of experiments. The first three experiments measured the pattern of CRs elicited by a lithiumand an amphetamine-paired CS chamber. The final experiment measured the pattern of URs elicited by lithium or amphetamine when administered in the same chamber. The suppression of grooming-related activities (body washing, face washing, and/or scratching) appeared as a nonspecific effect of both drug USs that was capable of becoming conditioned to the contextual chamber cue. A number of other behaviors differed among conditions, which provides evidence that contextual cue-drug associations are drug-specific. Of the behaviors that differed between the two US drug conditions, lithium CRs showed evidence of behavioral activation (enhanced rearing and limb flicking), but amphetamine CRs showed evidence of behavioral suppression (line crossing, rearing, and shaking). The UR patterns shared some similar and some dissimilar elements of the CR patterns elicited by the CS chamber for both lithium and amphetamine; in fact, by the activity and rearing measures, the URs and CRs were opposite in direction. The results exclusively supported neither stimulus substitution nor conditioned compensatory response accounts of Pavlovian conditioning; instead, each process appears to have accounted for different components of the overall CR pattern.  相似文献   

Gender Bias in Guatemalan Counselor Education Students: Using an Experiential Activity as a Stimulus     

Krista M. Malott  Martha Herrmansd?rfer de Zaid 《International journal for the advancement of counseling》2007,29(1):33-42

This article features the implementation and outcome of an experiential activity addressing gender bias in students at three university-based Guatemalan counselor education programs. The authors present students’ thematic responses delineating expectations of gender-specific communication styles and roles. A sequence of activities and students’ reflective commentaries are included, with suggestions for counselor educators in addressing gender bias in student populations.  相似文献   

Using Augmented Reality and Virtual Environments in Historic Places to Scaffold Historical Empathy     

Sara K. Sweeney  Phyllis Newbill  Todd Ogle  Krista Terry 《TechTrends》2018,62(1):114-118

The authors explore how 3D visualizations of historical sites can be used as pedagogical tools to support historical empathy. They provide three visualizations created by a team at Virginia Tech as examples. They discuss virtual environments and how the digital restoration process is applied. They also define historical empathy, explain why it is important, and discuss how it is taught.  相似文献   

Detecting Differential Speededness in Multistage Testing     

Wim J. van der Linden  Krista Breithaupt  Siang Chee Chuah  Yanwei Zhang 《Journal of Educational Measurement》2007,44(2):117-130

A potential undesirable effect of multistage testing is differential speededness, which happens if some of the test takers run out of time because they receive subtests with items that are more time intensive than others. This article shows how a probabilistic response-time model can be used for estimating differences in time intensities and speed between subtests and test takers and detecting differential speededness. An empirical data set for a multistage test in the computerized CPA Exam was used to demonstrate the procedures. Although the more difficult subtests appeared to have items that were more time intensive than the easier subtests, an analysis of the residual response times did not reveal any significant differential speededness because the time limit appeared to be appropriate. In a separate analysis, within each of the subtests, we found minor but consistent patterns of residual times that are believed to be due to a warm-up effect, that is, use of more time on the initial items than they actually need.  相似文献   

“Why am I here?”: A phenomenological exploration of first-generation college student experiences in STEM majors within a predominantly white institution     

Lisa M. Marco-Bujosa  Lauren Baker  Krista M. Malott 《科学教学研究杂志》2024,61(4):905-936

First-generation college students (FGCSs) are a growing population in undergraduate education. Research on FGCS primarily focuses on the challenges and barriers they encounter in college. While important, this literature offers a limited view of FGCS as learners. Moreover, minimal literature has examined these students' lived experiences within sciences, technology, engineering, and mathematics (STEM). This study explores the learning experiences of FGCS (N = 17) in undergraduate STEM programs at a mid-sized, private, predominantly white institution. Guided by the frameworks of intersectionality and social cognitive career theory, the researchers utilized a qualitative, phenomenological research methodology to hear the perspectives of FGCS to and to identify problematic higher educational structures in STEM. Findings point to an elitist stance underlying STEM programs based in general disciplinary norms that restricted FGCS access to STEM majors and careers across social, academic, and professional elements of the academic experience. FGCS who were multiply minoritized based upon race, gender, and social class experienced the compounding of marginalization, and academic success and persistence came at a personal cost. Students also reported relying predominantly on personal strengths and motivations to overcome elitism in STEM rather than on institutional supports. Findings also highlight the variation in the first-generation experience and identify the unique barriers FGCS encounter within STEM fields. Implications for dismantling inequitable structures for higher education in STEM attending to the social, academic, and professional inclusion of FGCS.  相似文献   

TEACHING RESEARCH IN GERONTOLOGY: TOWARD A CUMULATIVE MODEL     

Dena Shenk  Graham D. Rowles  James R. Peacock  Jim Mitchell  Bradley J. Fisher  Krista S. Moore  Lyndall Hare 《Educational gerontology》2013,39(7):537-556

In this article, we consider different approaches to teaching research methods in gerontology across a continuum of educational program levels. Our goal is to offer a conceptual framework and stimulate productive discussion of key issues and challenges in teaching research in gerontology. It is our belief that education in gerontology should include some level of training in research methodologies across all levels of gerontology instruction. Therefore, we have sought to identify those components of research training most appropriate for each level of gerontological education. Thus, basic understanding of research methods is appropriate at the associate's degree level and introductory exposure to basic issues involved in conducting research with elders provides a necessary backdrop to undergraduate programs. More in-depth understanding of gerontological research methods, particularly those involved in applied research, is a component of quality master's level programs. Finally, in-depth knowledge and the ability to apply distinctively gerontological research methods are necessary for conducting advanced original research at the doctoral level.  相似文献   

Stacks,Serials, Search Engines,and Students' Success: First-Year Undergraduate Students' Library Use,Academic Achievement,and Retention     

Krista M. Soria  Jan Fransen  Shane Nackerud 《The Journal of Academic Librarianship》2014

Like other units within colleges and universities, academic libraries are subject to increasing internal and external pressures to demonstrate their contributions to institutional goals related to students' success. The purpose of this study was to investigate the relationships between first-year undergraduate students' use of the academic library, academic achievement, and retention. Results of ordinary least squares regressions predicting first-year students' cumulative grade point averages (GPA) and logistic regressions predicting students' first-year to second-year retention suggest that students who used academic library services and resources at least once during the academic year had higher GPA and retention on average than their peers who did not use library services. The results of two separate regressions predicting students' GPA by 10 different types of library use suggest that four library use areas were consistently and positively associated with students' GPA: database logins, book loans, electronic journal logins, and library workstation logins. The results of two separate logistic regression analyses suggest that logging into databases and using library workstations were actions consistently and positively associated with students' retention. Additional results predicted by students' use of services at least one time and by one-unit increases in the frequency of library area uses are discussed.  相似文献