The psychological characteristics of experiences that influence science motivation and content knowledge

ABSTRACT

While motivational changes towards science are common during adolescence, our work asks which perceived classroom experiences are most strongly related to these changes. Additionally, we examine which experiences are most strongly associated with learning classroom content. In particular, using self-reports from a sample of approximately 3000 middle school students, this study investigates the influence of perceived science classroom experiences, namely student engagement and perceived success, on motivational change (fascination, values, competency belief) and content knowledge. Controlling for demographic information, school effects, and initial levels of motivation and content knowledge, we find that dimensions of engagement (affect, behavioural/cognitive) and perceived success are differentially associated with changes in particular motivational constructs and learning. Affective engagement is positively associated with motivational outcomes and negatively associated with learning outcomes, behavioural–cognitive engagement is associated only with learning, and perceived success is related only to motivational outcomes. Theoretical and practical implications are discussed.     

Assessing Learning in the Outdoors with the Field Trip in Natural Environments (FiNE) Framework

The development and application of a framework that captures main characteristics of learning in nature—the Field Trip in Natural Environments (FiNE) framework—is the main outcome of this study that followed up 22 daily field trips of 4–6th grade students to nature parks. The theoretical and practical framework, which was developed based on the research literature and the data collected, allows systematic analysis of various phases of the field trip: preparation, pedagogy, activity and outcomes. The FiNE framework incorporates multiple views of the researchers and participants and examines the pedagogy employed and the outcomes as reported by the participating students. The employment of the framework indicates limited preparation and the use of traditional pedagogies and highlights the importance of social interactions and physical and learning activity. The FiNE framework provides researchers with a plausible scheme to assess various components of field trips to nature and to elucidate possible outcomes of such experiences.     

Development and Large-Scale Validation of an Instrument to Assess Arabic-Speaking Students' Attitudes Toward Science

This study is part of a large-scale project focused on ‘Qatari students' Interest in, and Attitudes toward, Science’ (QIAS). QIAS aimed to gauge Qatari student attitudes toward science in grades 3–12, examine factors that impact these attitudes, and assess the relationship between student attitudes and prevailing modes of science teaching in Qatari schools. This report details the development and validation of the ‘Arabic-Speaking Students' Attitudes toward Science Survey’ (ASSASS), which was specifically developed for the purposes of the QIAS project. The theories of reasoned action and planned behavior (TRAPB) [Ajzen, I., & Fishbein, M. (2005). The influence of attitudes on behavior. In D. Albarracín, B. T. Johnson, & M. P. Zanna (Eds.), The handbook of attitudes (pp. 173–221). Mahwah, NJ: Erlbaum] guided the instrument development. Development and validation of the ASSASS proceeded in 3 phases. First, a 10-member expert panel examined an initial pool of 74 items, which were revised and consolidated into a 60-item version of the instrument. This version was piloted with 369 Qatari students from the target schools and grade levels. Analyses of pilot data resulted in a refined version of the ASSASS, which was administered to a national probability sample of 3027 participants representing all students enrolled in grades 3–12 in the various types of schools in Qatar. Of the latter, 1978 students completed the Arabic version of the instrument. Analyses supported a robust, 5-factor model for the instrument, which is consistent with the TRAPB framework. The factors were: Attitudes toward science and school science, unfavorable outlook on science, control beliefs about ability in science, behavioral beliefs about the consequences of engaging with science, and intentions to pursue science.     

Using psychological constructs from the MUSIC Model of Motivation to predict students’ science identification and career goals: results from the U.S. and Iceland

ABSTRACT

We investigated students’ perceptions related to psychological constructs in their science classes and the influence of these perceptions on their science identification and science career goals. Participants included 575 middle school students from two countries (334 students in the U.S. and 241 students in Iceland). Students completed a self-report questionnaire that included items from several measures. We conducted correlational analyses, confirmatory factor analyses, and structural equation modelling to test our hypotheses. Students’ class perceptions (i.e. empowerment, usefulness, success, interest, and caring) were significantly correlated with their science identification, which was correlated positively with their science career goals. Combining students’ science class perceptions, science identification, and career goals into one model, we documented that the U.S. and Icelandic samples fit the data reasonably well. However, not all of the hypothesised paths were statistically significant. For example, only students’ perceptions of usefulness (for the U.S. and Icelandic students) and success (for the U.S. students only) significantly predicted students’ career goals in the full model. Theoretically, our findings are consistent with results from samples of university engineering students, yet different in some ways. Our results provide evidence for the theoretical relationships between students’ perceptions of science classes and their career goals.     

Rethinking Flexible Learning in a Distributed Learning Environment: A University‐Wide Initiative

This paper is a case study of the impact of ICT on the teaching and learning environment at Murdoch University in Perth, Western Australia, where the convergence of distance and campus‐based education is changing the teaching environment in ways impossible prior to the development of ICT. Specifically, the paper will explore issues which have arisen from the implementation of a new flexible unit model which focuses on student access to rather than delivery of unit materials. The issues identified in a pilot of the new approach include: rethinking how students access learning resources; streamlining print materials provided to students; implementing an online lecture recording and streaming solution; and providing assessment which is equivalent whether taken on‐campus or online. These issues are not unique to Murdoch, but the integrated approach to resolving them offers a financially attractive means to achieve both reform and improved quality.

Reconsidération de la formation flexible dans un environnement de formation décentralisée. Une initiative dans toute l'université Cet exposé représente une étude de cas sur l'impact du ICT de l'environnement d'enseignement et de formation à l'université Murdoch à Perth en Australie de l'Ouest, où la convergence de la formation par correspondance et de la formation sur le campus change l'environnement d'enseignement ce qui était impossible avant le développement du ICT. Specifiquement, l'exposé s'occupe de problèmes qui résultent de l'implémentation d'un nouveau modèle d'enseignement flexible qui se concentre sur l'accès des étudiants plutôt que sur la diffusion de matières d'enseignement. Les problèmes identifiés dans un premier approche comprennent: Reconsidération de l'accès aux ressources de formation pour les étudiants; Rationalisation des matières imprimées prévues pour les étudiants; Réalisation d'une consignation de cours en ligne et présentation de solutions réactualisées; Evaluation équivalente soit considérée sur le campus ou en ligne. Ces problèmes ne sont pas unique à Murdoch mais un essai intégré de les résoudre offre un moyen financier intéressant pour atteindre une réforme et une qualité améliorée.

Überdenken des flexiblen Lernens in einem dezentralisiertem Lernumfeld: Eine universitätsweite Initiative Es handelt sich bei diesem Bericht um eine Fallstudie über den Einfluss von ICT auf die Lehr- und Lernumgebung an der Murdoch Universität in Perth in West Australien, wo das Zusammentreffen von Fernstudium und klassischer Hochschulbildung das Unterrichtsumfeld in einer Weise verändert, wie sie vor der Entwicklung von ICT unmöglich erschien. Es werden insbesondere Fragen untersucht, die durch die Einführung eines neuen, flexiblen Unterrichtsmodells entstehen, welches sich eher auf die studentischen Zugriffsmöglichkeiten auf Unterrichtsmaterialien fokussiert als auf die Versorgung des Studenten mit diesen Materialien. Die Fragen, die in einem neuen Pilotansatz aufkommen, beinhalten folgende Punkte: Überdenken, wie Studenten an Lernressourcen gelangen; Rationalisierung der für die Studenten vorgesehenen Printmaterialien; Einführung einer Aufzeichnung von Online Vorlesungen und laufend aktualisierte Anwendungen; Anwendung von einheitlichen Bewertungsmaßstäben, gleichgültig ob online oder an der Hochschule. Diese Fragen stellen sich nicht nur an der Murdoch Universität, aber der integrierte Ansatz sie zu beantworten, stellt eine finanziell attraktives Mittel dar, sowohl eine Reform als auch eine verbesserte Qualität zu erreichen.     

Engineering perceptions of female and male K-12 students: effects of a multimedia overview on elementary,middle-, and high-school students

Computer-based multimedia presentations employing animated agents (avatars) can positively impact perceptions about engineering; the current research advances our understanding of this effect to pre-college populations, the main target for engineering outreach. The study examines the effectiveness of a brief computer-based intervention with animated agents in improving perceptions about engineering. Five hundred sixty-five elementary, middle-, and high-school students in the southwestern USA viewed a short computer-based multimedia overview of four engineering disciplines (electrical, chemical, biomedical, and environmental) with embedded animated agents. Students completed identical surveys measuring five subscales of engineering perceptions immediately before and after the intervention. Analyses of pre- and post-surveys demonstrated that the computer presentation significantly improved perceptions for each student group, and that effects were stronger for elementary school students, compared to middle- and high-school students.     

第12届世界田径锦标赛及中国田径述评

运用文献资料、数理统计、逻辑分析等方法,对第12届世界田径锦标赛整体赛事进行综合分析,透视当前国际田坛实力格局状况,并针对中国在该届世锦赛中的表现提出建议,为备战2012年伦敦奥运会提供参考。     

基于USB的虚拟信号发生器接口电路设计

计算机总线技术的发展决定着虚拟仪器的命运.USB通用串行总线是电脑系统连接外围设备的新一代接口标准.利用PHILIPS公司的PDIUSBD12接口芯片,设计开发了具体实现USB协议和技术的通用USB设备接口.     

Effect of Vitamin B<Subscript>12</Subscript> and Folate on Homocysteine levels in colorectal cancer

Folate and cobalamin (Vitamin B₁₂) are two essential micronutrients involved in one-carbon metabolism, which affects heart disease, neural tube defects and cancer. Methylenetetrahydrofolate reductase, the key enzyme involved in one carbon metabolism produces methyl tetrahydrofolate from methylene tetrahydrofolate, which in turn donates methyl group to homocysteine to generate methionine. There exist two common low function polymorphic variants of the methylenetetrahydrofolate reductase gene involving nucleotides 677 C→T and 1298 A→C, which are associated with hyperhomocysteinemia. These polymorphisms are also linked with increased risk for certain cancers such as breast cancer and at the same time providing a protective effect on colorectal cancer. In this case control study, we have evaluated levels of folic acid, vitamin B₁₂ and homocysteine in patients with colorectal cancer. Folate and homocysteine levels did not differ significantly between the two groups; however an increasing trend was noticed with increase in homocysteine levels. Vitamin B₁₂ levels were increased in cases compared to control group.