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1.
张开雁  傅芹 《教师博览》2023,(30):28-30
问题链是引发学生“三学”的动因、载体、资源。基于“三学”课堂理念,教师在教学中要积极地研发问题链。基于“三学”课堂理念,设计研发问题链要秉持关联性原则、境脉性原则、实践性原则。教学中,教师要在开发“学材”、设计“学程”、指导学法的过程中设计问题链。通过分解、引导、建构,促进学生数学学习的有序推进,不断引导学生数学认知水平从现实发展区迈向可能发展区。  相似文献   

2.
数学课程的发展大部分情况下源于问题的推进作用,问题在数学实际教学中发挥着极其重要的作用.而“问题链”作为有效激发和推进学生学习的问题集合,它能充分整合教学的核心目标、核心内容,所有问题都将基于学生的生活实际和思维水平设定和提出,并科学合理地贯穿于课堂教学,不管是对于教师教学还是学生学习都有着极大的促进作用.因此,现阶段很多数学教师都会选择在课堂上利用“问题链”组织教学,但是不可否认的是大部分小学数学教师在“问题链”的设计过程中仍然存在许多的不足,还有一些不可忽视的问题有待解决.所以,本文结合笔者自身的教学经验,通过对目前小学数学教学现状的思考和分析,谈谈如何设计出更科学有效的“问题链”,来切实助推小学数学课堂深度教学.  相似文献   

3.
在数学课堂学习动力系统已有研究的基础上,动态对比分析两节数学课堂是十分必要的.研究结果表明:教学用问题的分布、不同阶段教学用问题的使用是影响有效教学的关键因素之一;课堂教学中高密度的提问并不代表高质量的教学,思维的启动和维持需要高质量的问题链.  相似文献   

4.
数学教育家汉斯·弗赖登塔尔认为:“数学来源于现实,存在于现实,并且应用于现实,数学过程应该是帮助学生把现实问题转化为数学问题的过程.”《新课程标准》中强调:“数学教学是数学活动,教师要紧密联系学生的生活环境,要重视从学生的生活实践经验和已有的知识中学习数学和理解数学.”因此,数学教师应关注学生的生活世界,打通书本世界与生活世界之间的界限,在数学教学中找准学生的学习最近发展区,把熟知、亲近的生活数学带进学生视野、带进课堂,让数学课堂真正地“活”起来.在八年级(上)第八章第二节“中位数与众数”这一课程的设计中,我充分…  相似文献   

5.
陈媛媛 《教师》2020,(4):58-59
深度学习的小学数学课堂,应该是以生为本的课堂。在教学中,教师应通过激发兴趣、把握“前测”,调动学生学习的积极性和主动性;靠近“生活”、挖掘“数理”,教学生“有用”的数学,让学生掌握数学学习的思维性。  相似文献   

6.
为更好地提升初中学生的数学素养,引导学生由低阶向高阶思维发展,可在教学中尝试“问题链”教学模式。教师需要遵循学生思维发展规律,抓住学生思维“生长点”“延伸点”,积极探索“问题链”教学原则,设计更多的教学方案,鼓励学生在问题引领下提升学习兴趣,打造“提质增效”的数学课堂。  相似文献   

7.
本节课以问题链的形式组织教学,体现了基于情境、问题导向的教学理念,课堂结构鲜明、一气呵成.执教教师能够准确理解教材意图、精准施教.特别重视落实对学生进行数学学习一般方法路径的学法指导,重视发挥“类比”作为一种思维工具的作用,仔细地处理“特殊与一般”“分类与整合”的关系,设计的课堂小结与作业注重开放性、延伸性,反映出教师树立了正确的教学观、师生观.  相似文献   

8.
现代教育技术为做“数学实验”提供了可能,“数学实验”除了实现既定的课堂知识目标之外,最大的价值便是实现了学生研究数学问题的探索精神、科学态度以及由持续性学习到研究性学习的“隐性目标”。本文通过《几何画板》具体教学案例,探讨实现课堂隐性目标的方法。  相似文献   

9.
传统的课堂模式是一种“知识课堂”,以知识为中心,关注的是教学的结果;新课程倡导的课堂模式则是一种“生命课堂”,更为关注学生的学习体验.高中《数学课程标准(实验)》凸显了“体验性学习”的重要地位,其中至少有三次提到体验,即:“高中数学课程应力求使学生体验数学在解决实际问题中的作用、数学与日常  相似文献   

10.
新教材对探索问题、开放性问题以及社会实践性问题的增加 ,为我们实施研究性学习提供了更多的机会 .但目前的数学研究性学习大多采用主题形式和课外活动形式 ,如何将研究性学习引入课堂 ,介绍一些我们的教学尝试 .课题 双曲线的渐近线导入 请同学们作出双曲线 x24 -y2 =1的草图 ,然后相互交流 .(同学们用描点法画出了双曲线的大致图形 ,交流中发现形状各异 ,主要问题是对图形的“走势”把握不好 ) (开放性问题是研究性学习的特征之一 ,动手操作 ,能激发学生的学习兴趣 )点题 现在 ,我们研究双曲线图形的“走势”问题 .导思 1 请同学们根…  相似文献   

11.
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.  相似文献   

12.
汉字倒说     
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。  相似文献   

13.
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.  相似文献   

14.
Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F.  相似文献   

15.
《海外英语》2007,(5):44-45
It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,  相似文献   

16.
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/  相似文献   

17.
《海外英语》2007,(5):10-11
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?  相似文献   

18.
Different nations have different social cultures, and the social culture of every nation is developing with the development of the nation, language is greatly influenced by social culture, which enables language to possess national and historical characteristics. Word is the smallest, independent, meaningful linguistic unit of language. It can well reflect the national and historical characteristics. From synchronic aspect, the social and cultural influence on word meaning is mainly embodied in conceptual and associative meanings of word. The incorrespondence of word meaning is a phenomenon that exists in both conceptual and associative meanings of word among different languages. From diachronic aspect, the development of social culture causes some changes of word meaning to some extent. Therefore, social culture plays a key role in vocabulary learning and mastery of a language.  相似文献   

19.
钱生钱!     
我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了  相似文献   

20.
The problem on the geometrc inequalities involving an n-dimensional simplex and its inscribed simplex is studied. Aninequality is established, which reveals that the difference between the squared circumradius of the n-dimensional simplex andthe squared distance between its circumcenter and barycenter times the squared circumradius of its inscribed simplex is not lessthan the 2(n-1)th power of n times its squared inradius, and is equal to when the simplex is regular and its inscribed siplex is atangent point one. Deduction from this inequality reaches a generalization of n-dimensional Euler inequality indicating that thecircumradius of the simplex is not less than the n-fold inradius. Another inequality is derived to present the relationship betweenthe circumradius of the n-dimensional simplex and the circumradius and inradius of its pedal simplex.  相似文献   

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