浅谈科学课如何有效提问

文章介绍了初中自然科学教育在九年义务教育中的重要性,生动有效的提问是自然科学教学取得良好效果的关键。文章从引导式提问、追问式提问、层次式提问、拓展式提问等4方面阐述了自然科学课堂如何有效提问,最后提出艺术的提问手法。     

数学课堂提问精心预设的策略研究

提问是一种基本的课堂教学活动,是有效教学的"核心"。为提高提问的有效性,本文从提问目标、提问"点"、提问对象、提问问题四个方面对数学课堂提问精心设计的策略进行了探究。     

谈化学课堂教学中有效提问策略

为了了解现阶段课堂教学的有效提问情况,对学生进行了随机抽样问卷调查,问卷调查内容主要包括提问频率方面、提问难度方面、提问类型方面、提问等侯方面、回答评价方面.根据调查结果提出教师要从提问前想好问题、提问中问好问题和提问后评好问题三个途径来提高化学课堂上提问的有效性.     

高中历史教学中课堂提问的探索

学生不善于提出问题,究其原因与教师不会提问,或不善于提问有关。而提问是发挥学生主体作用的有效途径。新课程理念要求问题的设计不仅要从教材实际出发,更要从学生实际出发。对历史教师如何设计课堂提问,本文分知识性问题和开放性问题探讨了各种方法。     

浅谈课堂提问在职高计算机教学中的有效性

课堂提问是教师教学艺术的重要体现。提问效果的好坏,往往成为一堂课成败的关键。成功的设问可以开启学生的创新思维,提升课堂教学的效果。本文从提问的种类、提问的艺术、提问的注意点三方面进行探究了与讨论。     

英语口语教学中的提问策略

提问在口语教学中起着十分重要的作用，本文在探讨研究背景的基础上，从提问的类型、提问的顺序，提问的对象和设计提问的策略四个方面出发探讨了英语口语教学中的提问策略。     

合作原则视角下的大学英语课堂教师提问的调查与分析——以玉林师范学院为例

提问是课堂上外语教师常用的教学方法之一。本文调查与分析了广西一所普通院校(玉林师范学院)的8位大学英语教师的课堂提问模式,从合作原则的4个准则总结归纳了8位教师的课堂提问情况。在此基础上,笔者提出一些提高课堂提问教学效果的建议。     

对英语课堂提问的现状分析及对策研究

课堂提问在英语教学中起着举足轻重的作用,本文从分析课堂提问的现状入手,继而提出课堂提问的有效策略。     

浅谈从课堂提问中体现素质教育

提出了就增强学生能力 ,提高学生素质如何进行课堂提问的问题 ,并从课堂教学的进程和效果两方面讨论了有关课堂提问的设计方案     

初中历史教学的有效提问

初中历史课提问的技巧、方式很多,教师应该根据实际情况灵活运用.从认知的角度出发,提问分为知识水平的提问、理解水平的提问、应用水平的提问、分析水平的提问、综合水平的提问和评价水平的提问等.从技巧的角度来看,提问还可分为诱导式、疏导式、阶梯式、对比式和迂回式等提问类型.高质量的提问需要一定的技巧,如结合教学重难点进行提问,控制好课堂提问的频率,保护学生创新思维的火花等.提问要注意问题的难度,设计出难度适中的关键问题.只有教学中确实需要提问的才提问,才能确保其效益;教学中不需要提问则不必勉强而问,以免画蛇添足.由于受传统的教学行为方式与习惯性思维方式的影响,还有很大一部分教师(尤其是农村中学)的思想观念和思维方式的转变还不到位,教师往往是从自身思维的角度出发去预设课堂教学目标,而在具体的课堂教学过程中,学生生成性学习又难以达到这样的目标,问题的提出过于专业化和成人化.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the