问题化教学在初中化学课堂中的应用探讨

随着教学改革的不断发展,问题化教学方式也越来越受到国内各所学校教师的重视。在初中化学教学中,使用问题化教学方式,不仅能够给学生创建较为有趣的语境,更能调动学生学习的积极性,使其对化学学习保持较高的热情。但就目前教学情况来看,很多教师虽然在化学课堂中引用了问题化教学法,但是大多停留在问题的表面,没有充分关注到学生的本身,问题设计不够合理,反而适得其反。因此,教师应当注意创建合理情境,引发学生学习兴趣,并同小组合作探究形式提升学生合作意识,最后还应当结合学生实际情况进行问题设计。本文围绕"问题化教学在初中化学课堂中的应用探讨"这一主题展开探讨。     

高中化学课堂问题情境化教学——以“物质的化学计量”为例

高中化学教学中创设问题情境，积极开展问题情境化教学，可激发学生主动思考的积极性，使其能更加清晰、全面地认识所学，更好地把握化学知识本质.文章以“物质的化学计量”为例，结合具体实践过程，探讨了问题情境化教学相关策略.     

探究问题化教学在初中化学课堂中的应用

化学教师应该关注到问题化教学的运用价值,重视结合实际情况设置问题情境以引导初中生对课程知识进行深度探索,提高学生们对课程内容的了解程度。基于学科教育特色和初中生的认知情况,化学教师应该改变陈旧的授课模式与能力培养思维,重视围绕实际情况提出多个层面的思考问题,有助于提高化学教育的趣味性和实效性。所以,化学教师应该关注问题化教学的运用价值,围绕初中生的认知情况和课程基础提出多个方面的思考问题,进一步强化课程教育效率。     

让化学史教育走进化学课堂

化学史教育对学生了解化学成就及其过程,激发学习兴趣,学习化学家研究问题的思想和方法,激励刻苦钻研的精神具有十分重要的作用.我们可采用多种形式在化学教学中穿插渗透化学史教育.     

问题化教学法在初中化学课堂有效应用探究

化学是初中课程体系中的一员,不仅是一门必修课,还是中考重要内容。如何调动学生学习化学的热情、强化化学课堂教学效果,成为初中化学教学探讨的热门。其中问题化教学方法成为化学教学研究的宠儿。本文立足问题化教学引入化学课堂的必要性,探讨如何在初中化学课堂教学中有效应用问题化教学法。     

化归思想在解化学题中的应用

化归思想足指在学习化学过程中，有意识地把有侍解决的问题通过某种变换归结到一类已解、易解或可解的问题中去，使问题化难为易，化隐为显．其一般过程如图：     

关于环保理念在化学教学中的培养与渗透

随着环境污染问题日渐加剧,人们对环保问题的重视程度不断加深。化学作为一门与环境污染与保护息息相关的学科,在此环保大背景下理应将环保理念渗透进日常化学教学活动中。本文结合实例简单阐述如何在化学教学中培养学生环保理念的问题。     

如何利用化学教学优势培养学生环保意识

保护环境已成为当前和未来全球性的重大课题之一,也是我国的一项基本国策。环境问题是当今世界各国都非常关注的问题,在世界人口不断增长、生产不断发展、人民生活水平不断提高的过程中,由于人们对环境与生产发展的关系认识不够,以及对废弃物处理不当,使环境受到不同程度的破坏,如土地的沙漠化、水资源危机、酸雨、臭氧层的破坏、有毒化学品造成的污染等。作为一名化学教师,在化学教学过程中应根据教学内容适时地对学生进行环保意识方面的教育。     

化学史教育与中学化学教学

针对目前化学史教育在中学化学教学中的重视程度不够这一问题,从化学史教育的意义、化学史教育的内容和形式、化学史教育的基本要求和实施化学史教育的方法等4个方面,比较详尽地阐明了化学史教育在中学化学教学中的重要地位.     

化学史在高中化学教学中的应用

随着新课程化学教学改革的进行,越来越多的一线教师意识到化学史教育的重要作用,本文结合自身的教学体验,从化学史教学的指导思想、化学史教学的原则、化学史在教学中的作用三个角度阐述化学史在高中化学教学中的应用。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

Western and Eastern culture differences in commercial field

The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

风的曲线

Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.