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网络给长期以来处于低效的大学英语写作教学提供了新的平台,通过运用合作学习理论,学生可以主动参与写作过程,有效地提高写作效率。教师角色发生转变,由主导者变成参与者。本研究试图探索网络环境下合作学习在大学英语写作教学中的运用,以及是否优于传统写作教学。 相似文献
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在体育教学中,为了促进学生自主性、创造性的学习,我们进行了小学体育“互学互评”课堂教学模式的探索。“互学互评”是以教学目标为依据,注重发挥教材的作用,突出学生之间的信息传递与交流,弘扬学习小组团结合作精神,发挥评价对学习的增值功能,显现小组成员互帮互学互评的作用,从而促进学生充分参与,主动探究的课堂教学模式。“互学互评”课堂教学的设计力求体现“以学生发展为本”的思想核心,把着眼点确定为以下3个方面:(1)充分发挥学生主动参与学习的积极性,引导学生走向教材,为学生能自主探究,学会从同伴、教师、学习材料等多种渠道取得… 相似文献
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本文旨在进行医学：校男女生在大学英语写作成绩中的差异研究,运用SPSS17.0分析了所有数据后发现女生在大学英语写作成绩中的均值高于男生,并且,独立样本T检验结果说明男女生之间存在显著性差异。研究结果可能帮助提高大学英语写作教学。 相似文献
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建构主义教学观对于我国目前的英语教学改革有着非常重大的意义。伴随着多媒体技术和现代信息技术的高速发展,旧的阅读式教学模式正在接受巨大的挑战。在建构主义教学观的影响下,改革英语阅读教学模式,这对于高等院校英语教师来说是一种全新的挑战。 相似文献
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英语作为全球流动性最广的语言,顺应全球化的发展趋势,学生应当在心中意识到英语这门学科的重要性。国内的教学模式要与国际化教育模式合理的融合,去其糟粕取其精华,找出再适合本国的英语教学模式。随着时代的发展,大学英语教学也被赋予了新的标准和期望。国际化课程学习给英语教学注入了新鲜血液,倡导跟国际接轨的教学理念,以国际化定位为中心展开教学任务,相信未来的英语教学会更加符合当代大学生的真正需要。 相似文献
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现今,我国大学英语教学改革与创新正在往深层次推进,教育部高教司指出,大学英语的教学目标是培养学生的英语综合应用能力,无论是听说读写哪方面的能力.因此,在现代社会的高等院校中,其教学模式应特别使英语教学以专业知识为背景,并朝着个性化学习、自主式学习方向发展.新的教学模式要求教师重新定位自己的角色,这便使得传统模式中教师的主导地位受到挑战,教师由知识传播者、灌输者转变成学生学习知识、主动构建知识的帮助者和促进者.而在医学院校里,英语由于既对医学生相当重要却又只能在医学院校里处于基础课程的尴尬地位而有着特殊性.本文通过回顾传统的大学英语教学模式的特点及其利弊,拟对医学院校里大学英语教师角色的转换进行探究,从而可以更明了高等医学院校大学英语教师在语言教学中如何客观的进行定位. 相似文献
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This study examined the effect of carbohydrate ingestion on metabolic and performance-related responses during and after a simulated 1h cycling time trial. Eight trained male cyclists (VO 2 peak = 66.5ml kg -1 min -1 ) rode their own bicycles mounted on a windload simulator to imitate real riding conditions. At a self-selected maximal pace, the cyclists performed two 1h rides (separated by 7 days) and were fed either an 8% carbohydrate or placebo solution. The beverages were administered 25 min before (4.5ml kg -1 ) and at the end (4.5ml kg -1 ) of the ride. With carbohydrate feeding, plasma glucose tended (P = 0.21) to rise before the time trial. Compared with rest, the plasma glucose concentration decreased significantly (P < 0.05) at the end of both rides, with no statistically significant difference being observed between treatments. Thereafter, plasma glucose increased significantly (P < 0.05) at 15 and 30 min into recovery, and was significantly higher at 30 min during the carbohydrate trial compared with the placebo trial. No significant changes in plasma free fatty acids were observed during the ride. However, a significant increase (P < 0.05) in free fatty acids was found at 15 and 30 min into recovery, with no difference between trials. Mean power output was significantly (P < 0.05) greater during the carbohydrate compared with the placebo trial (mean - S.E.: 277-3 and 269-3W, respectively). The greater distance covered in the carbohydrate compared with the placebo trial (41.5-1.06 and 41.0–1.06km, respectively; P < 0.05) was equivalent to a 44s improvement. We conclude that pre-exercise carbohydrate ingestion significantly increases endurance performance in trained cyclists during a 1h simulated time trial. Although the mechanism for this enhancement in performance with carbohydrate ingestion cannot be surmised from the present results, it could be related to a higher rate of carbohydrate oxidation, or to favourable effects of carbohydrate ingestion on the central component of fatigue. 相似文献
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Roy J. Shephard 《Journal of sports sciences》2013,31(7):603-620
The biology and medicine of rowing are briefly reviewed. Effort in a 2000 -m race is about 70% aerobic. Because the boat (and in some instances a cox) must be propelled, successful competitors are very tall, with a large lean mass and aerobic power. Large hearts may lead to erroneous diagnoses of a cardiomyopathy. Large respiratory minute volumes must be developed by chest muscles that are also involved in rowing. The vital capacity is typically large, and breathing becomes entrained. Expiration cannot be slowed relative to inspiration (as normally occurs at high rates of ventilation) and the limiting flow velocity may be reached, with the potential for airway collapse. Performance is strongly related to the power output at the ‘anaerobic threshold’, and lactate measures provide a guide to an appropriate intensity of endurance training. Peak blood lactate levels are higher in males (commonly 11–19 mmol·l -1 and occasionally as high as 25 mmol·l -1) than in females (9–11 mmol·l -1), probably because males have a greater muscle mass in relation to blood volume. The skeletal muscles are predominantly slow twitch in type, developing an unusual force and power at low contraction velocities. Many rowers have a suboptimal diet, eating excessive amounts of fat. Lightweight rowers also have problems of weight cycling. Aerobic power and muscle endurance often change by 10% over the season, but such fluctuations can be largely avoided by a well-designed winter training programme. Injuries include back and knee problems, tenosynovitis of the wrist and, since the introduction of large blades, fractures of the costae. 相似文献
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重新认识体育的社会关联 总被引：3，自引：1，他引：2
体育与政治之间存在一个悖论，体育的发展与经济实力之间没有直线相关，体育与教育部分重叠，体育与宗教最为近缘，体育可借用科学手段，体育的艺术禀性日益明显，体育与养生反映着两种人生观。 相似文献
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本文在专家访谈、问卷调查、数理统计和文献资料分析的基础上,探析了上海社区体育竞赛参与者的特点、参与者对社区体育赛事运作管理的看法等问题。在此基础上从引进社区体育赛事的志愿者、整合社区体育赛事的各种资源、开发社区体育竞赛的无形资产、组建非营利性的专业团队、规范社区体育赛事的服务管理等方面提出了进一步满足上海社区居民日益增长的体育竞赛参赛需求的对策与措施。 相似文献
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对全面把握游泳训练环节的探讨 总被引：4，自引：0，他引：4
从系统观点出发,结合训练实践,对全面把握游泳训练环节进行探讨。认为应强化非智力因素在运动员多年训练中的作用,在育材全过程中不断选材,从整体上把握动态训练的全过程,把培养高水平运动员的整个过程置于一个严格的科学控制之下。 相似文献
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影响和限制耐力性运动项目的成绩的生理因素是复杂的和多方面的,取决于训练的强度和运动成绩.大强度持续性运动可导致呼吸肌疲劳.运动性呼吸疲劳可能在决定运动耐量方面起到关键的作用：一方面通过直接影响运动肌力量的生成（外周疲劳）,另一方面,通过肢体用力自感不安反馈引起工作肌运动单位输出功率下降（中枢疲劳）.对呼吸肌进行训练,可能有助于提高耐力性项目的运动成绩. 相似文献
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Alan M. Nevill Roger L. Holder Andrew Bardsley Helen Calvert Stephen Jones 《Journal of sports sciences》2013,31(4):437-443
A regression analysis of competitors' tournament results in relation to their world rankings was proposed to identify the effect of home advantage in international ‘grand-slam’ tennis and ‘major’ golf tournaments. The results provided little evidence of home advantage in either the grand-slam tennis or the golf tournaments held in 1993. The only possible evidence of home advantage was found in the Wimbledon tennis and the US Open golf championships. Even these findings can be explained, at least partially, by (1) the availability of information concerning the low world rankings of the British tennis players competing at Wimbledon, and (2) selective entry, allowing only the world's top-ranked foreign golfers into the US open golf tournament. In both cases, the lower ranking home competitors have a greater opportunity to perform above their anticipated world rankings. Therefore, provided entry into tennis and golf tournaments is truly ‘open’ to both the host nation's representatives and foreign competitors alike, home advantage does not appear to be a major factor influencing the competitors' performance in such competitions. These findings may be explained by the relatively objective nature of the scoring systems used in tennis and golf, unlike the subjective influence of refereeing decisions on the results of team-games such as soccer. 相似文献
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青少年业余足球运动员运动倾向性5因素结构模型初探 总被引：3，自引：0，他引：3
根据Scanlan等人最新提出的运动倾向性理论模型,结合我国实际情况建立了青少年足球运动员运动倾向性5因素结构模型。运动倾向性被定义为:渴望和决心继续参加足球运动的心理状态。所建立的5因素结构模型认为,运动倾向性是由运动乐趣、参与选择、个人投入、社会约束及参与机会5个因素决定。经确定5个决定因素和运动倾向性的操作定义,编制了相应调查问卷,通过对北京市252名青少年足球运动员实测结果,建立运动倾向性及其影响因素的协方差结构模型,用Lisre 18分析的结果表明:该运动倾向性模型比较符合北京青少年足球运动员。其中运动乐趣、个人投入、参与机会和参与选择4因素对运动倾向性有影响;社会约束对运动倾向性影响不大。 相似文献