A study assessing the potential of negative effects in interdisciplinary math-biology instruction     

Madlung A  Bremer M  Himelblau E  Tullis A 《CBE life sciences education》2011,10(1):43-54

There is increasing enthusiasm for teaching approaches that combine mathematics and biology. The call for integrating more quantitative work in biology education has led to new teaching tools that improve quantitative skills. Little is known, however, about whether increasing interdisciplinary work can lead to adverse effects, such as the development of broader but shallower skills or the possibility that math anxiety causes some students to disengage in the classroom, or, paradoxically, to focus so much on the mathematics that they lose sight of its application for the biological concepts in the center of the unit at hand. We have developed and assessed an integrative learning module and found disciplinary learning gains to be equally strong in first-year students who actively engaged in embedded quantitative calculations as in those students who were merely presented with quantitative data in the context of interpreting biological and biostatistical results. When presented to advanced biology students, our quantitative learning tool increased test performance significantly. We conclude from our study that the addition of mathematical calculations to the first year and advanced biology curricula did not hinder overall student learning, and may increase disciplinary learning and data interpretation skills in advanced students.  相似文献   

Harnessing technology to improve formative assessment of student conceptions in STEM: forging a national network   总被引：2，自引：0，他引：2  

Haudek KC  Kaplan JJ  Knight J  Long T  Merrill J  Munn A  Nehm R  Smith M  Urban-Lurain M 《CBE life sciences education》2011,10(2):149-155

Concept inventories, consisting of multiple-choice questions designed around common student misconceptions, are designed to reveal student thinking. However, students often have complex, heterogeneous ideas about scientific concepts. Constructed-response assessments, in which students must create their own answer, may better reveal students' thinking, but are time- and resource-intensive to evaluate. This report describes the initial meeting of a National Science Foundation-funded cross-institutional collaboration of interdisciplinary science, technology, engineering, and mathematics (STEM) education researchers interested in exploring the use of automated text analysis to evaluate constructed-response assessments. Participants at the meeting shared existing work on lexical analysis and concept inventories, participated in technology demonstrations and workshops, and discussed research goals. We are seeking interested collaborators to join our research community.  相似文献   

教育数据挖掘工具综述     

斯特凡·斯莱特  斯万克·约克西莫维奇  维特梅·科万诺维奇  莱恩·贝克  德拉甘·加斯维奇  崔鑫  王靖 《北京广播电视大学学报》2018,(1):37-47

数据挖掘拥有悠久的历史,它可以追溯到探索性数据分析(Tukey, 1977),且目前已经形成了有效的、可推广的方法.本文将讨论教育数据挖掘研究与实践中逐渐兴起的一些工具,以及在更广泛的层面上数据挖掘和数据科学研究者所使用的相关工具,近40种教育领域数据挖掘与分析的常用工具,包括数据处理与特征工程工具、算法分析工具、可视化效果工具,以及EDM和LA的特殊应用,如贝叶斯知识跟踪工具、文本挖掘、社会网络分析、过程与序列挖掘、PSLC服务站等.本文将为初次接触这一领域的研究者提供有用的信息,以帮助他们找到有用的工具.  相似文献   

新疆普通高校体育教学现状调查     

海力旦·依不拉音 《体育文化导刊》2011,(8):108-110

采用问卷调查法等对新疆普通高校体育教学模式、教学大纲、课程设置、教师队伍、教材使用、体质健康标准的实施现状等进行调查。调查显示,教师专业结构不合理,教学与科研不能协调发展,体育教师的待遇与工作负荷不成正比。具有地方特色、民族特色、学校特色的体育教改新思路在新疆普通高校逐渐兴起。建议:加强对体育教师的专业培训;在教学中注重培养学生终身体育观念,培养学生积极健身意识;要充分体现民族体育和现代体育的有机结合,开展具有少数民族体育特色的教学活动。  相似文献   

Single maximal versus combination punch kinematics     

Piorkowski BA  Lees A  Barton GJ 《Sports biomechanics / International Society of Biomechanics in Sports》2011,10(1):1-11

The aim of this study was to determine the influence of punch type (Jab, Cross, Lead Hook and Reverse Hook) and punch modality (Single maximal, 'In-synch' and 'Out of synch' combination) on punch speed and delivery time. Ten competition-standard volunteers performed punches with markers placed on their anatomical landmarks for 3D motion capture with an eight-camera optoelectronic system. Speed and duration between key moments were computed. There were significant differences in contact speed between punch types (F(2,18,84.87) = 105.76, p = 0.001) with Lead and Reverse Hooks developing greater speed than Jab and Cross. There were significant differences in contact speed between punch modalities (F(2,64,102.87) = 23.52, p = 0.001) with the Single maximal (M+/- SD: 9.26 +/- 2.09 m/s) higher than 'Out of synch' (7.49 +/- 2.32 m/s), 'In-synch' left (8.01 +/- 2.35 m/s) or right lead (7.97 +/- 2.53 m/s). Delivery times were significantly lower for Jab and Cross than Hook. Times were significantly lower 'In-synch' than a Single maximal or 'Out of synch' combination mode. It is concluded that a defender may have more evasion-time than previously reported. This research could be of use to performers and coaches when considering training preparations.  相似文献   

专家邮箱     

杰达·沃恩 《网球》2011,(8):94

鱼跃救球靠谱吗?看到职业选手飞身鱼跃救球的动作太帅了,我也想学学,但是找不到这方面的教程,同时也有些担心,怕动作不对把自己给摔坏了,或者把球拍摔坏了也不好。请问如何鱼跃救球,或者直接告诉我,菜鸟用鱼跃救球靠谱吗?  相似文献   

澳网的启示     

保罗·费恩  李硕 《网球》2011,(3):24-27

2011年的澳网依旧没有迎来一位新的大满贯冠军,但这并不意味着网球的世界没有因它而改变。弥漫在墨尔本公园两周的硝烟已经散去,澳网带给我们的启示却依旧在延续。  相似文献   

胡安·马丁·德尔·波特罗双手反拍赏析     

翠茜·奥斯汀  金路 《网球》2011,(11):96-97

1无论是采用关闭式站位还是开放式站位打双手反拍,就像德尔·波特罗在这里所展示的这样,你必须要做两件事情：分开和准备。在你的身体和双手间留出适当的空间,并不需要什么特殊的距离,只要确保你处于舒服和放松的状态就行——紧张的肌肉会制造出僵硬的击球。准备,指的是在球拍和步法上的简单的调整。  相似文献   

伟大的正手：费德勒vs纳达尔（下）     

保罗·费恩  金路 《网球》2011,(2):82-86

是哪些因素造就了网坛巨星费德勒和纳达尔的伟大正手？他们的正手击球有着怎么样的相同和不同之处？业余选手以及职业选手又能从他们的正手技术中学到哪些东西呢？我采访了网球频道著名网球技术分析员吉梅尔斯托布先生。所提出的问题,都是基于这两个历史上最具毁灭性击球围绕展开的。吉梅尔斯托布,与维纳斯·威廉姆斯获得1998年澳大利亚网球公开赛和法国网球公开赛混合双打冠军,前美国戴维斯杯队员,对网球运动有着深入的了解,在巡回赛中曾数次与两位巨星交手。  相似文献   

伟大的正手：费德勒vs纳达尔（上）     

保罗·费恩  金路 《网球》2011,(1):92-96

＂三个因素的结合,促成了比赛的胜利。一是用技术作为基础,对球进行良好的控制;二是用各种战术发现对手的弱点;三是勇敢的击球,并且在压力之下执行预先制定的计划。＂——潘科·塞左拉（20世纪40-50年代的网球冠军）是哪些因素造就了网坛巨星费德勒和纳达尔的伟大正手？他们的正手击球有着怎么样的相同和不同之处？业余选手以及职业选手又能从他们的正手技术中学到哪些东西呢？我采访了网球频道著名网球技术分析员吉梅尔斯托博先生。所提出的问题,都是围绕这两个历史上最具毁灭性击球的球员展开的。吉梅尔斯托博,与维纳斯·威廉姆斯搭档获得1998年澳大利亚网球公开赛和法国网球公开赛混合双打冠军,前美国戴维斯杯队员,对网球运动有着深入的了解,在巡回赛中曾数次与这两位巨星交手。在这次有启发意义的采访中,他巧妙的分析了费德勒和纳达尔正手击球的基本组成要素,同时也解释了他们是如何将运动天赋、身体素质、个人思维、精细雕琢的技术以及战术策略完美结合,从而打造出网球世界中最好的网球利器。  相似文献