合作学习的问题设计

数学学习过程，从某种意义上说是一个发现问题、分析问题及解决问题的过程。合作学习的优越性，更多地体现在通过合作交流解决数学问题上。精心设计适合于小组合作学习的问题，是提高小组合作学习有效性的前提与关键。     

合作学习中讨论问题的设计

合作学习是新课程大力倡导的主要学习方式之一，而合作学习总是围绕某些问题来进行的，学生要学习和掌握的内容通常是以讨论问题的形式出现。因此，要使合作学习富有成效，一定要精心设计讨论的问题。一般来讲，在设计讨论的问题时应注意以下几点：一、讨论的问题要有一定的开放性；二、讨论的问题难易要适度；三、讨论的问题要有一定的梯度和层次；四、讨论的问题之间要有一定的内在联系和逻辑性。只有紧紧围绕新课程标准和教材的重点、难点来进行讨论问题的设计，才能让学生在生动有趣的问题情境中带着思考、带着热情去主动探索，充分利用已有的知识经验有效地解决问题，从而获得成功的愉悦。     

在实际问题情境中加深数学概念法则理解——《有理数的乘法（1）》的设计与思考

数学概念与法则是进行数学学习的基础，是解决实际生活中问题的前提，在学习数学概念法则时要处理好数学概念法则与实际问题情境的关系，一方面创设适当的问题情境，理解学有用的数学的内涵；另一方面要理解数学概念与法则的本质和抽象性，不能将数学概念法则局限在一个情境中．下面结合《有理数的乘法(1)》的设计，谈谈对这一问题的几点思考．     

对小学数学教学中学生自主学习的分析

在数学教学中要突出学生学习的自主性，培养学生的自主学习能力是数学新课程标准倡导的基本理念之一。在数学教学中，教师要创设学生自主学习的情境，让学生在自主探索和合作交流中理解数学基本概念，发展思维能力，掌握基本技能，使学生的数学学习活动成为一个生动活泼的、主动的和富有个性的发展过程。     

数学教学活动设计初探

新课标特别提出了数学教学是数学活动的教学，强调“有效的数学学习活动不能单纯地依赖模仿与记忆，动手实践、自主探索与合作交流是学生学习数学的重要方式”。这要求教师在教学中要精心设计教学活动，引导学生亲身体验如何做数学，从而实现数学再创造。     

在探究中发现在发现中学习

有效的数学学习活动不能单纯依赖模仿与记忆，动手实践、自主探索与合作交流是学生学习数学的重要方式。根据这一理念，笔者在“圆的认识”一课的教学设计中，花１５分钟时间，让学生通过对生活中车轮的探究，发现圆的特征，学习圆的知识，效果颇佳。首先出示问题：生活中很多物体的表面可以设计成圆形，也可以设计成其他形状，但车轮就一定要设计成圆形，你知道为什么吗？这是出现在学生身边的一个“鲜活”的生活问题，学生知其然，而不知其所以然，易激发兴趣。紧接着各小组按实验要求，进行了长达１５分钟的探索实践的学习活动（学生按下…     

关于初中数学教学设计的几条建议

教学设计是教师为达到教学目标对数学过程与行为的系统规划．初中数学教学应重视问题情境设计,形成认知冲突;要重视学生操作过程设计,努力培养学生的操作过程;要重视探索与合作过程设计,努力培养学生的合作与探究能力;要重视讨论模式设计,引导学生学会辩论;要重视练习设计,对学生学习情况及时找反馈;要重视课堂提问的设计,引导学生积极思考．     

符合学生认知心理的数学课堂教学设计

现代认知心理学视教学为一个活的过程。认知的教学观认为,学习是人脑内部复杂的加工和组织形式,要经历一定的过程,才能达到认识和理解;数学教学不仅仅是教数学结论,还要展开数学活动。为此,教学要通过设置问题激活兴趣启发思考;设置探究,增加体验突出研究方法;通过创造性的应用,深化对数学知识的理解,收获喜悦,享受成功。     

"合作学习"的把握与开发

合作交流是合作学习中的一个重要方面，小组合作又是合作学习与交流的一种形式，其根本目的是为了使学生更好的发展。作为一名教者，组织学生小组合作学习时，应考虑学习内容的合作目的和合作价值。一般来说，在数学教学中，合作学习可以从以下几个角度切入：一是面对数学问题，在学生持有各自思想，观点和方法时，组织学生相互交流、沟通观点、碰撞思想、认证方法、合作互助，共同探索未知，寻求真理；二是面对数学问题，分工合作、收集信息、整理材料、发现问题、研究问题，共同寻找策略，解决问题等。     

问题驱动合作中问题设计的优化策略

问题驱动是指用问题驱动学生学习,促使学生进行深入的思考,理解数学的本质。因此,在设计问题时,教师一定要紧紧围绕新课程标准和教学内容的重、难点,充分把握好问题的广度、难度、梯度等,努力使学生在问题驱动合作学习中真正学到数学知识,获得不同的发展。     

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.