Microcomputers in Mathematics Teaching     

Derek Ball 《British journal of educational technology : journal of the Council for Educational Technology》1987,18(3):247-255

The use of computers is of considerable value for those learning mathematics. Their effective use depends upon adequate teacher education and the provision of sufficient hardware in classrooms where mathematics is taught. The purpose of using computers in mathematics classrooms is to engage learners' interest and involvement in the mathematics they are learning. To achieve this learners need to be in control of what they are doing. At present, turtle geometry and the use of relatively limited software packages appear to be most effective for this, but in the near future it should be possible to develop software tools which are both powerful and easy to use. These are likely to include information-retrieval packages; spreadsheets; and also 'microworlds' written in a language such as Logo or Prolog.  相似文献   

Second-order conditioned taste aversion in rats: Shared modality is not sufficient to promote an association between S2 and SI     

Derek Robertson  Richard V. Krane  Paul Garrud 《Learning & behavior》1984,12(3):316-322

Second-order conditioning (SOC) in pigeons, but not rats, appears to involve an association between the second-order stimulus (S2) and the first-order stimulus (SI). Nairne and Rescorla (1981) suggested it was the use of stimuli from the same modality that promoted an association between S2 and SI in pigeon SOC studies. In support of their hypothesis, they demonstrated that pigeons, like rats, did not form an association between S2 and SI when these stimuli were from different modalities. In this study, we sought to determine whether rats, like pigeons, would associate S2 with SI when these stimuli shared the same modality. Female Lister rats injected with LiCl after consuming .12M saline solution (SI) showed an aversion to a 15% sucrose solution (S2) that was subsequently paired with the saline. This was so regardless of whether S2 and SI had been presented sequentially (Experiment 1) or simultaneously (Experiment 2). Only in Experiment 2, however, did extinction of the aversion to saline diminish the aversion to sucrose; that is, employing stimuli from the same modality was not a sufficient condition, of itself, to allow rats to associate S2 with SI.  相似文献   

Evaluating two approaches to helping college students understand evolutionary trees through diagramming tasks   总被引：1，自引：0，他引：1       下载免费PDF全文

Perry J  Meir E  Herron JC  Maruca S  Stal D 《CBE life sciences education》2008,7(2):193-201

To understand evolutionary theory, students must be able to understand and use evolutionary trees and their underlying concepts. Active, hands-on curricula relevant to macroevolution can be challenging to implement across large college-level classes where textbook learning is the norm. We evaluated two approaches to helping students learn macroevolutionary topics. Treatment 1 is a laboratory for the software program EvoBeaker designed to teach students about evolutionary trees. We tested Treatment 1 among nine college-level biology classes and administered pre/posttests to assess learning gains. We then sought to determine whether the learning gains from Treatment 1 were comparable to those derived from an alternate hands-on treatment, specifically the combination of a prerecorded lecture on DVD and paper-based activity based on Goldsmith's Great Clade Race (Treatment 2). Comparisons of pre- and posttests among participants using either Treatment 1 or 2 show large learning gains on some misconceptions and skills beyond knowledge gained from reading standard textbook entries. Both treatments performed equivalently in overall learning gains, though both had areas where they performed better or worse. Furthermore, gains among students who used Treatment 1 representing a wide range of universities suggest that outcomes are potentially applicable to a variety of "real-world" biology classes.  相似文献   

The Role of Ethics,Culture, and Artistry in Scientific Illustration     

Derek G. Ross 《Technical Communication Quarterly》2017,26(2):145-172

This article is a case-based theoretical exercise designed to investigate the role that ethics, culture, and artistry play in scientific illustration. In this article, the author theorizes a visual model of cultural interplay and scientific illustration in the creation of scientific knowledge and argues that scientific illustrations work as epistemological devices because they are culturally mediated constructions imbued with personal, organizational, and disciplinary trust, and shaped by the embedded cultural worldviews.  相似文献   

协调劳动力的教育与培训     

Derek Elias 《职业技术教育》2007,(27):26-27

非常高兴在这里作演讲,而且在这里我想向会议的主办方,并向中国的联合国相关机构表示感谢!我来自联合国教科文组织亚太地区教育局,该  相似文献   

Facilitating Chemistry Teachers to Implement Inquiry-based Laboratory Work     

Derek Cheung 《International Journal of Science and Mathematics Education》2008,6(1):107-130

Science teachers generally find inquiry-based laboratory work very difficult to manage. This research project aimed at facilitating chemistry teachers to implement inquiry-based laboratory work in Hong Kong secondary schools. The major concerns of seven chemistry teachers were identified. They were most concerned about the lack of class time, shortage of effective instructional materials, and the need to teach large classes. To allay teacher concerns, teaching strategies were developed to aid teachers. The strategies include the use of guided inquiry rather than open inquiry, development of ten examples of authentic inquiry, and inclusion of student oral presentations as a key component of the inquiry process. Trials done in schools indicated that these strategies are useful.  相似文献   

Free-weight resistance exercise on pulse wave reflection and arterial stiffness between sexes in young,resistance-trained adults     

J. Derek Kingsley  Yu Lun Tai  Xian Mayo  Alaina Glasgow  Erica Marshall 《European Journal of Sport Science》2017,17(8):1056-1064

We sought to determine the sex-specific effects of an acute bout of free-weight resistance exercise (RE) on pulse wave reflection (aortic blood pressures, augmentation index (AIx), AIx at 75?bpm (AIx@75), augmentation pressure (AP), time of the reflected wave (Tr), subendocardial viability ratio (SEVR)), and aortic arterial stiffness in resistance-trained individuals. Resistance-trained men (n?=?14) and women (n?=?12) volunteered to participate in the study. Measurements were taken in the supine position at rest, and 10 minutes after 3 sets of 10 repetitions at 75% 1-repetition maximum on the squat, bench press, and deadlift. A 2?×?2?×?2 ANOVA was used to analyse the effects of sex (men, women) across condition (RE, control) and time (rest, recovery). There were no differences between sexes across conditions and time. There was no effect of the RE on brachial or aortic blood pressures. There were significant condition?×?time interactions for AIx (rest: 12.1?±?7.9%; recovery: 19.9?±?10.5%, p?=?.003), AIx@75 (rest: 5.3?±?7.9%; recovery: 24.5?±?14.3%, p?=?.0001), AP (rest: 4.9?±?2.8?mmHg; recovery: 8.3?±?6.0?mmHg, p?=?.004), and aortic arterial stiffness (rest: 5.3?±?0.6?ms; recovery: 5.9?±?0.7?ms, p?=?.02) with significant increases during recovery from the acute RE. There was also a significant condition?×?time for time of the reflected wave (rest: 150?±?7?ms; recovery: 147?±?9?ms, p?=?.02) and SEVR (rest: 147?±?17%; recovery: 83?±?24%, p?=?.0001) such that they were reduced during recovery from the acute RE compared to the control. These data suggest that an acute bout of RE increases AIx, AIx@75, and aortic arterial stiffness similarly between men and women without significantly altering aortic blood pressures.  相似文献   

Armed with Abundance: Consumerism and Soldiering in the Vietnam War. Meredith H. Lair. Chapel Hill: University of North Carolina Press, 2011.     

James Derek Shidler 《Journal of American culture (Malden, Mass. : 2003)》2012,35(4):366-367

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The effect of biofeedback training on affective regulation and simulated car-racing performance: a multiple case study analysis     

Edmonds WA  Tenenbaum G  Mann DT  Johnson M  Kamata A 《Journal of sports sciences》2008,26(7):761-773

The foundation of this study was based on an idiosyncratic concept, which uses probabilistic determinations (Kamata, Tenenbaum, & Hanin, 2002) to verify the utility and effectiveness of a biofeedback intervention by manipulating affective performance states in a race-car simulator. Nine males completed five separate time-trials of a simulated racing task and were then randomly assigned to one of three arousal regulation treatment conditions: (1) optimal, (2) poor, and (3) attention control. Following the biofeedback intervention, participants underwent another series of race trials to determine the effectiveness of the arousal regulation intervention. The results indicated that there were relative similarities in the strength and direction of the perceived and physiological states between the participants; however, the subtle details of the participants' unique performance zones and the probability of achieving each zone were revealed to be unique among the participants. The results also indicated that: (a) the biofeedback manipulation resulted in the expected changes for each participant, and (b) there were some large individual differences among the participants, necessitating the idiosyncratic approach. Limitations and future directions are also addressed.  相似文献   

Edwin Smith: a life in Derbyshire cricket     

Derek Barnard 《Sport in History》2018,38(1):123-125

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