大学数学教学应重视德育功能     

陈泽凡 《湖南城市学院学报》2002,19(3):56-58

介绍了大学数学课堂教学中进行德育的基本内容 ,以及在教学过程中实施德育的手段和方法  相似文献   

A construct‐modeling approach to develop a learning progression of how students understand the structure of matter     

《科学教学研究杂志》2017,54(8):1024-1048

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Using iPad tablets for self‐modeling with preschoolers: Videos versus photos          下载免费PDF全文

Dacia M. McCoy  Julie Q. Morrison  Dave W. Barnett  Hilary D. Kalra  Lauren K. Donovan 《Psychology in the schools》2017,54(8):821-836

As technology becomes more accessible and acceptable in the preschool setting, teachers need effective strategies of incorporating it to address challenging behaviors. A nonconcurrent delayed multiple baseline design in combination with an alternating treatment design was utilized to investigate the effects of using iPad tablets to display video self‐modeling and activity photos for three preschoolers during circle time. During baseline, all three children demonstrated low levels of engagement and high levels of off‐task behavior compared to peers. The intervention phase consisted of alternating between showing the child the self‐video and photos prior to circle time. A child preference phase was conducted whereby each child self‐selected the video or photo prior to circle time. For all three children both videos and photos led to increased engagement and decreased off‐task behaviors. During the child preference phase, all three children selected the video most frequently. Social validity data demonstrated teacher and child preference for the video self‐modeling condition.  相似文献   

Externalizing behavior problems and interest in reading as predictors of later reading skills and educational aspirations     

《Contemporary educational psychology》2017

This study examined the developments in children’s externalizing problems and interest in reading during their first four years of school (Grades 1–4) and investigated whether this development predicted the children’s Grade 6 reading skills and educational aspirations. Data comprised (1) teachers’ ratings of externalizing problems and children’s (N = 642; 43% girls) self-ratings of their interest in reading, collected between Grades 1 and 4, and (2) measures of reading fluency and comprehension, and children’s self-reports of educational aspirations, collected at Grade 6. First, latent growth modeling showed that a higher level of externalizing problems in Grade 1 was associated with a lower concurrent interest in reading. Second, a positive association between the initial level of interest in reading and a linear change in externalizing problems indicated that children with a lower interest in reading in Grade 1 were rated by teachers as exhibiting higher levels of externalizing problems, which nonetheless declined over the course of their first four years of school more than among other children. Third, a higher initial level of externalizing problems with a linear change in these problems across Grades 1–4 was a predictor of lower subsequent educational aspirations and poorer reading comprehension in Grade 6. Analysis of the indirect effects indicated that a higher level of externalizing problems was associated with a lower concurrent interest in reading, which, in turn, was related to poorer future reading fluency and lower educational aspirations. The findings imply that problem behaviors are interlinked with academic skill development and motivation across the first six years of school.  相似文献   

Why 3D Print? The 21st-Century Skills Students Develop While Engaging in 3D Printing Projects     

Torrey Trust  Robert W. Maloy 《学校用计算机》2017,34(4):253-266

The emergence of 3D printing has raised hopes and concerns about how it can be used effectively as an educational technology in school classrooms. This paper presents the results of a survey asking teachers from multiple grade levels and subject fields about the impact of 3D projects on student learning. Teachers were asked about the kinds of 3D projects they were doing with students and what skills or knowledge students were developing by participating in those projects. Participants reported that their students developed a number of skills while working on 3D printing projects, including 3D modeling, creativity, technology literacy, problem-solving, self-directed learning, critical thinking, and perseverance. Parallels between teacher-identified skills and widely cited lists of 21^st-century skills suggest that 3D projects are a promising approach to preparing students for life and work in a digital age.  相似文献   

融入基础力学内容的“计算方法”课程延拓性教学实践     

彭凡 《科教文汇》2020,(14):62-63

在计算方法课程教学中融入理论力学、材料力学知识内容,提出延拓性教学的三个层次:一是由力学问题认识基本数学问题的来源与背景;二是掌握基本数学模型的数值求解方法与理论;三是通过编程实验环节将具体力学问题转化成数学模型求数值解。近几年的课程教学效果调查表明,采用延拓性教学法能有效提高学生的学习主动性、综合应用所学知识分析问题和解决问题的能力。  相似文献   

Off line simulation system of machining processes     

Ibrahim M. Deiab  Stephen C. Veldhuis 《Journal of The Franklin Institute》2007,344(5):565-576

The primary objective for modeling of machining processes is to develop a predictive capability of machining performance in order to facilitate effective planning of machining operations. This capability leads to faster implementation, higher performance, quality at a lower cost. This comes about due to improved selection of machining parameters, optimal fixture design and the avoidance of tool failure. The simulation system presented simultaneously considers the effect of cutter geometry, the cutter's initial position errors, workpiece geometry, machine tool dynamics, and workpiece/fixture system dynamics on the machining process.The integration of all of the above in one model provides an off-line tool to simulate and optimize the machining parameters and the fixture configuration cutting both lead and production time. The modular nature of the simulation system presented allows for the study of many different machining processes. The cutting forces in this system are modeled using a mechanistic approach. NURBS curves and surfaces are utilized for the geometric modeling and simulation of the machining process. While a finite element method is used to model and analyze the workpiece/fixture dynamics. Two case studies are presented to demonstrate the practical application of the presented simulation. The first case presents the optimization of the fixture configuration of a generic automotive component. While the second case presents the results of simulations performed on a novel mill/grind machining process. This process is a combination of face milling and grinding in one operation. Some simulated results are presented along with experimental validation.  相似文献   

技术创新能力与民营企业竞争优势的实证分析     

王庆喜  秦辉 《科学学研究》2007,25(Z2):460-464

文章对民营企业技术创新能力与其竞争优势的关系进行了实证检验。技术创新能力用研发条件与技术水平两个维度进行测量,竞争优势状况则基于与同行企业的绩效比较来反映。通过254家浙江民营企业的样本数据分析,发现研发条件与技术水平对企业竞争优势均有正向影响,但后者影响的效应要大。研究发现的意义在于,民营企业应更多地通过提升技术水平,而不是单纯投资研发条件来促进其竞争优势。  相似文献   

非共识项目的设立给基础研究源头创新带来新希望     

周忠祥  刘志国 《中国科学基金》2007,21(1):17-19

通过科学基金“地表柯石英的模拟合成及其形成机制的研究”项目的评审、批准和研究的具体实例,阐明基金评审制度改革,设立非共识项目的政策,极大地鼓励和推动了基础研究的原始创新。  相似文献   

基于BP网络的降雨-水位预报模型应用研究   总被引：1，自引：0，他引：1  

占玉林  王长耀  牛铮 《中国科学院研究生院学报》2007,24(1):81-85

本文改进了BP网络的学习率和动量项的自适应调整算法，阐述了洪水预报BP网络模型的构造和数据处理方法，建立了降雨～水位预报BP网络模型，实现了洪水水位的直接预报，同时还提出了以点雨量作为模型输入的建模方案，有效地改善了BP网络的模拟性能。  相似文献