Modeling Student Cognition in Digital and Nondigital Assessment Environments

Inferences about student knowledge, skills, and attributes based on digital activity still largely come from whether students ultimately get a correct result or not. However, the ability to collect activity stream data as individuals interact with digital environments provides information about students’ processes as they progress through learning activities. These data have the potential to yield information about student cognition if methods can be developed to identify and aggregate evidence from diverse data sources. This work demonstrates how data from multiple carefully designed activities aligned to a learning progression can be used to support inferences about students’ levels of understanding of the geometric measurement of area. The article demonstrates evidence identification and aggregation of activity stream data from two different digital activities, responses to traditional assessment items, and ratings based on observation of in-person non-digital activity aligned to a common learning progression using a Bayesian Network approach.     

带冠涡轮盘电火花加工专用CAD/CAM软件开发

In this paper,a special-purpose CAD/CAM software package,BliskCad/Cam,based on a commercial CAD/CAM software Unigraphics is developed to reduce difficulties in CNC-EDM of the shrouded turbine blisks.The software package con- sists of five modules such as electrode design,path searching,and machining simulation module.Functions of BliskCad/Cam include parametrical reconstruction of 3-D model of the blisk,intelligent design of complex shaped electrode,automatic gener- ation of NC codes,search of interference-free tool path for multi-axis NC-EDM and machining simulation,etc.Experimental verification is conducted by using BliskCad/Cam and the results show that it satisfies the requirements,and can realize pre- cision machining and reduce accessorial time remarkably.     

Assessing environmental understanding: an application of the concept mapping strategy

Despite its importance as a central goal in environmental education, there appears to be little consensus about how best to document, assess and evaluate understanding of environmental concepts. This illustrative case study describes and demonstrates the use of the concept mapping strategy as an effective tool for assessing environmental understanding. Data were collected from 325 middle school‐aged (11–14 years) individuals and comparisons were made among those enrolled in a model, university‐based, informal, residential marine education program (viz. MarineQuest) and a matched group of non‐participating students. Using a non‐randomized Solomon Four Group experimental design, differences in the structural complexity and content validity of knowledge about marine animal life were explored. Results reveal significant differences in the frequencies of concepts, relationships, levels of hierarchy, branching and cross‐linking and in the frequencies and types of critical concepts depicted. In all cases, where differences were found, they favored participants who enrolled in the environmental education intervention. The findings suggest that concept maps offer a valuable alternative or adjunct to traditional pencil and paper tests and provide both a qualitative and a quantitative measure of conceptual understanding.     

Explain the Brain: Websites to Help Scientists Teach Neuroscience to the General Public

Increased public awareness of neuroscience often results in requests to neuroscientists to share their knowledge with lay audiences. This Feature showcases Internet-based resources to help neuroscientists explain their work to the general public and K–12 audiences.     

Redefining Authentic Research Experiences in Introductory Biology Laboratories and Barriers to Their Implementation

Incorporating authentic research experiences in introductory biology laboratory classes would greatly expand the number of students exposed to the excitement of discovery and the rigor of the scientific process. However, the essential components of an authentic research experience and the barriers to their implementation in laboratory classes are poorly defined. To guide future reform efforts in this area, we conducted a national survey of biology faculty members to determine 1) their definitions of authentic research experiences in laboratory classes, 2) the extent of authentic research experiences currently experienced in their laboratory classes, and 3) the barriers that prevent incorporation of authentic research experiences into these classes. Strikingly, the definitions of authentic research experiences differ among faculty members and tend to emphasize either the scientific process or the discovery of previously unknown data. The low level of authentic research experiences in introductory biology labs suggests that more development and support is needed to increase undergraduate exposure to research experiences. Faculty members did not cite several barriers commonly assumed to impair pedagogical reform; however, their responses suggest that expanded support for development of research experiences in laboratory classes could address the most common barrier.     

Humor Works in Funny Ways: Examining Satirical Tone as a Key Determinant in Political Humor Message Processing

This multi-experiment study builds upon extant political entertainment theory, testing whether satire type (horatian versus juvenalian) cues varying processing mechanisms (message discounting versus resource allocation), and if consequential differences to argument scrutiny levels or message persuasiveness result. Using novel stimuli (e.g., animated cartoons, study one) and real-world late-night political satire (The Daily Show and The Colbert Report, study two), results suggest that satire type was a key antecedent in political humor message processing. Additionally, the varying mechanisms had differential effects on political argument scrutiny levels and message persuasiveness.     

Improvements in fundamental movement skill competency mediate the effect of the SCORES intervention on physical activity and cardiorespiratory fitness in children

Numerous studies have identified a positive association between fundamental movement skill (FMS) competency and physical activity in children; however, the causal pathways have not been established. The aim of this study is to determine if changes in FMS competency mediated the effect of the Supporting Children’s Outcomes using Rewards, Exercise and Skills (SCORES) intervention on physical activity and cardiorespiratory fitness in children. Eight primary schools (25 classes) and 460 children (aged 8.5 ± 0.6, 54% girls) were randomised to the SCORES intervention or control group for the 12-month study. The outcomes were accelerometer-determined moderate-to-vigorous physical activity (MVPA) and cardiorespiratory fitness. The hypothesised mediators were actual FMS competency and perceived sport competence. Mediation analyses were conducted using multilevel linear analysis in MPlus. From the original sample, 138 (30.0%) and 370 (80.4%) children provided useable physical activity and cardiorespiratory fitness data at post-test assessments. There were significant treatment effects for locomotor skills and overall FMSs. Changes in MVPA were associated with changes in object-control skills, overall FMSs and perceived competence. The overall FMSs had a significant mediating effect on MVPA (AB = 2.09, CI = 0.01–4.55). Overall FMSs (AB = 1.19, CI = 0.002–2.79) and locomotor skills (AB = 0.74, CI = 0.01–1.69) had a significant mediating effect on cardiorespiratory fitness. The results of this study conclude that actual but not perceived movement skill competency mediated the effect of the SCORES intervention on physical activity and cardiorespiratory fitness.     

A quality improvement apprenticeship: Gross anatomy in the time of Covid-19

The study of anatomy is a team-driven field in which anatomy instruction occurs in small groups in the laboratory with one faculty member guiding students through each anatomical region. One laboratory experience may include several small group instructors in one simultaneous learning session. In comparison, the education of future gross anatomists often happens in an apprenticeship model, where the optimal learning outcomes are met through training with an experienced mentor. It was the vision of the authors to further their education through initiating an inter-institutional exchange to apprentice with innovative mentors in order to bring new ideas back to their own gross anatomy courses. The Southeastern Conference, a consortium of the Universities in the Southern region of the United States often associated with intercollegiate sports, has a host of academic initiatives in addition to the athletic emphasis. The Southeastern Conference Faculty Travel Program is one mechanism by which the organization promotes scholarly excellence. In this case, the Faculty Travel Program provided a way for authors from the University of Kentucky to visit a nearby institution, Vanderbilt University, and learn from like-minded anatomy educators, with the goal of incorporating changes in their courses geared toward quality improvement. After this implementation, positive themes emerged in the student feedback on course evaluations. However, the collaboration was interrupted by the onset of the Covid-19 pandemic. This article examines the strengths of interinstitutional apprenticeship and the benefits of such practices in a time of accelerated change in anatomical instruction.     

Nelson,Brian C & Erlandson,Benjamin E (2012) Design for learning in virtual worlds Routledge (New York & London) isbn 978‐0‐415‐88640‐6 215 pp £24.99 http://www.routledge.com/books/details/9780415886406/

Nelson and Erlandson have collated a summary of the work of early designers and researchers into virtual worlds for learning and assessment. While it is confined to those experiences already well known in the literature, it does provide a basic introduction for undergraduates. If it seems that this book could be relevant to you, I advise that you will probably find only parts of it of interest or use. John G Hedberg     

‘How do I do it if I don’t like writing?’: Adolescents’ stances toward writing across disciplines

This research embedded in the National Study of Writing Instruction examines higher- and lower-achieving adolescents’ stances toward content-area writing through a qualitative discourse analysis of interviews with 40 students in California, Kentucky, New York, and Texas secondary schools. The study asked: (1) How do students’ stances toward writing compare in general and across disciplines? (2) How do stances compare among middle and high school students and among students with different achievement histories? Results suggest that adolescents generally hold positive attitudes toward writing that allows for the expression of subjective stances, which they report is more commonly assigned in English language arts classrooms. Implications for the adoption of new US standards for disciplinary writing are discussed.