八年级学生概念图建构特征研究

通过概念图评估和测验,探讨八年级学生建构概念图的特征,能够很好的反映出学生的学业水平。相比被试概念图制作的概念得分和层级得分,命题得分对学生的科学学业测验成绩有更高的预测效度。通过对学生制作的概念图错误问题的分析,能够反映学生在学习过程中存在的问题,并能有效地指导教师的教学。     

基于知识图谱的我国教育公平研究进展及趋势

教育公平是影响社会稳定发展的重要因素。基于中国知网(CNKI)中教育公平研究主题下的核心期刊文章及CSSCI文章进行文献计量研究,结合CiteSpace可视化软件对教育公平研究主题下的成果数量、作者、机构合作特征、关键词等进行分析,结果表明:一是教育公平的研究发文数量呈现"波动式增长"的态势;二是北京师范大学、华中师范大学、浙江大学等是主要的研究权威机构;三是高等教育公平、和谐社会理念下教育公平研究和教育公平改革与创新是主要的研究热点;四是从本质上追求教育公平,构建适合时代的公平而有质量的教育理念与机制是未来研究的热点内容。     

如何构建“脑中地图”

学会构建脑中地图,对中学生的地理学习具有重要意义。     

概念图在高职英语词汇教学中的实践策略

基于概念图教学理论,在高职非英语专业词汇教学中采用概念图教学,通过元知识讲解、概念图案例、布置绘制概念图的任务、异质分组、小组协作建构概念图、小组展示并讲解概念图、默写概念图中的生词和词组等七个步骤,再建立基于Blog与QQ相结合的教学平台,提高学生的词汇应用能力,培养学生的创新能力。     

思维导图在英语专业课堂教学中的应用——以综合英语课程为例

阐述了思维导图作为一种有效的思维组织工具应用在英语专业小班教学中的实证过程及结果,指出了思维导图在整合信息源、进行有效学习以及记忆和实现知识系统的意义建构方面的有效性,旨在为思维导图在实践教学中的有效推广提供借鉴。     

改革医用有机化学教学培养临床专业“拓展型”人才的实践

为培养临床医学"拓展型"人才,进行了医用有机化学教学改革的实践,将多种方法运用到教学实践中,使学生的知识面得到了拓宽,使学生能力得到了提高,实现了教学改革目标。     

手绘思维导图在大学英语语篇教学中的应用

语篇教学作为一种新的教学方法,受到大学英语教师的欢迎,可在具体实施过程中,出现了一些问题,为了更好地实施语篇教学,以语篇分析理论为依据,在分析手绘思维导图特点的基础上,结合教学实践,探讨思维导图在大学英语语篇教学中的应用。     

基于垂直扫描显微干涉技术的高精度轮廓仪

A profilometer used for 3 dimension measurement of micro-surface topography is presented. The instrument is based on the vertical scanning microscopic interferometry （VSMI）. A Linnik type interference microscope is used and the interferograms which present changes of surface profile are recorded with a CCD camera. A developed nano-positioning work stage with an integrated optical grating displacement measuring system realizes the precise vertical scanning motion during profile measurement. By a white-light phase shifting algorithm of arbitrary step, frames of interferograms are processed by a computer to rebuild and evaluate the measured profile. Because of the specialty of VSMI, the profilometer is suitable for both smooth and rough surface measurement. It can also be used to measure curved surfaces, dimension of micro electro mechanical systems （MEMS）, etc. The vertical resolution of the profilometer is 0.5 nm, and lateral resolution 0.5 μm.     

La Medusa by Caravaggio: characterisation of the painting technique and evaluation of the state of conservation

The oil painting “La Medusa” executed by Caravaggio at the end of the XVI century on a wooden shield, was investigated by integrated physical–chemical and analytical methodologies in order to obtain scientific data capable of elucidating the state of conservation and the painting technique. Optical (OM) and electronic (SEM-EDS) microscopy, micro-FT-IR spectroscopy, gas chromatography–mass spectrometry (GC–MS) and pyrolysis GC–MS were applied on two microfragments and some organic samples obtained by solvent extraction using the swab cleaning technique. The obtained results indicated that Caravaggio probably reused an old shield as a previous gypsum preparation layer has been detected under the original painting layers. He used white lead, natural earths, verdigris and lead–tin yellow type I mixed with drying oils to paint. The considerable amount of amorphous particles of copper chlorides found in the green pigment verdigris suggests that it could have been produced according to the ancient recipe of verde salsum described by Theophilus. Mordant gilding has been identified on the upper part of the shield that can be related to an abandoned experiment to give the painting a mirror-like reflecting effect. Three different varnishes layers have been detected above the painted surface. The original and restoration varnishes have been identified and they contain a mixture of drying oil, mastic and turpentine and some beeswax. Cleaning tests, performed with different organic solvents, suggest the use of isopropyl alcohol as cleaning agent because it is less efficient in comparison to others solvents; thus it ensures a careful and controlled removal of the varnishes.     

英语阅读之管见

英语阅读在听、说、读、写、译各项技能中占有重要位置。生活在当今信息时代 ,阅读能力至关重要 ,它是最有效获得信息的一种手段。因此 ,为培养学生的阅读能力 ,教师在英语教学中 ,应把阅读技巧的培养放在首位