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板书担负着知识传递和课堂文化传承的双重任务。设计良好的板书不仅有助于学生对知识的记忆、理解和建构,还有助于打造严肃活泼的课堂氛围、塑造立德树人的课堂灵魂、促进教学反思和提升育人质量。笔者以板书教学在生物化学课程中的实践为例,按照针对学生要实现的教学目标,对板书进行了分类,分别介绍了每类板书在多媒体时代的必要性和适用范围,以期使板书这一传统教学形式在新时代课堂教学中发挥其重要作用。  相似文献   

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生物学教学中的板书与板图祁乃成(北京市教育局教研部100055)板书是文字的直观,板图是图形的直观,如运用得当,不失其为优化教学的辅助手段之一。它们能使课堂教学内容的整体框架一目了然;能突出生物学基本事实的重点;能增加学生直接识记的信息数量;能调节与...  相似文献   

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概念图是盛行于国外特别是欧美国家的一种教学形式。它以直观形象的方式表达知识结构,能有效呈现思考的过程及知识的关联,引导学生进行意义建构,在我国科学课程的教学设计中这一有效的策略已逐渐引起人们的关注。  相似文献   

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板书是中学生物教学中最普遍而重要的一种直观教学形式。我们在组织师范生进行教育实习时,尝试了一种新的板书形式——纸贴板书,在有关内容的教学中收到了较好的教学效果。1纸贴板书的制作和演示方法1.1制作方法教师在备课时,按照教学内容列出简洁明了的板书提纲,...  相似文献   

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本文以"蒸馏"的教学为例,阐述传统板书与多媒体相结合在化工原理中教学过程中的应用。采用多媒体和板书相结合的教学方法,使二者优势互补,以达到学生兴趣、提高教学效果的目的。  相似文献   

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运用概念图策略时选用丰富多彩、形式多变的呈现方式,能够更加直观地用图形来表示抽象的概念,进一步提高教与学的效率.本文将Inspiration软件中的16种概念图模板归纳为4种基本模式,并结合实例介绍其在生物学教学中的应用.  相似文献   

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生物课堂教学板书严隐石(福州教育学院350000)板书在课堂教学中占有极其重要的地位,它和口头表达一起称为教师教学能力的“双基”。本文想就板书的作用、板书的设计两方面加以阐述。1板书的作用11有利于将课堂知识系统化。比如初一生物第一部分第一章第二节...  相似文献   

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谈生物教学板书的设计郭明章(安徽省南陵师范学校242431)板书是课堂教学的重要手段之一。精炼的板书是一种高度概括性的语言文字,语言与思维是有密切关系的。一个教师的讲课,加上流利的口表语言,附有较好的板书设计,在教学中将起到非常重要的作用。1板书的设...  相似文献   

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人类已进入信息时代 ,计算机与网络技术的发展孕育并促进了崭新的网络教育模式的诞生。医学寄生虫学教学一直延用传统的教学手段 ,那就是教师讲述 ,辅以板书和挂图 ,最多就是放几张投影或幻灯片。这对于寄生虫学这门形态学课程来说教学效果一直不甚满意。而网络多媒体教学具有诸多方面的优势 ,借助多媒体技术可以把寄生虫的形态生动地展示给学生 ,配合视频演示还可以把以前只能在现场或临床新鲜标本中才能观察到的寄生虫活体呈现在课堂上。另外 ,网络教学强大的交互性、开放性、内容可不断更新、可同时把多种信息形式展示给学生等特点是其它…  相似文献   

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通过将探究性学习与概念学习相互融合的教学方式,学生直观地认识和理解呼吸运动的过程,以概念图的形式帮助学生构建知识框架,建立和理解重要概念。  相似文献   

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In experiments on Black Sea skates (Raja clavata), the potential of the receptor epithelium of the ampullae of Lorenzini and spike activity of single nerve fibers connected to them were investigated during electrical and temperature stimulation. Usually the potential within the canal was between 0 and –2 mV, and the input resistance of the ampulla 250–400 k. Heating of the region of the receptor epithelium was accompanied by a negative wave of potential, an increase in input resistance, and inhibition of spike activity. With worsening of the animal's condition the transepithelial potential became positive (up to +10 mV) but the input resistance of the ampulla during stimulation with a positive current was nonlinear in some cases: a regenerative spike of positive polarity appeared in the channel. During heating, the spike response was sometimes reversed in sign. It is suggested that fluctuations of the transepithelial potential and spike responses to temperature stimulation reflect changes in the potential difference on the basal membrane of the receptor cells, which is described by a relationship of the Nernst's or Goldman's equation type.I. P. Pavlov Institute of Physiology, Academy of Sciences of the USSR, Leningrad. I. M. Sechenov, Institute of Evolutionary Physiology and Biochemistry, Academy of Sciences of the USSR, Leningrad. Pacific Institute of Oceanology, Far Eastern Scientific Center, Academy of Sciences of the USSR, Vladivostok. Translated from Neirofiziologiya, Vol. 12, No. 1, pp. 67–74, January–February, 1980.  相似文献   

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Evolution of living organisms is closely connected with evolution of structure of the system of regulations and its mechanisms. The functional ground of regulations is chemical signalization. As early as in unicellular organisms there is a set of signal mechanisms providing their life activity and orientation in space and time. Subsequent evolution of ways of chemical signalization followed the way of development of delivery pathways of chemical signal and development of mechanisms of its regulation. The mechanism of chemical regulation of the signal interaction is discussed by the example of the specialized system of transduction of signal from neuron to neuron, of effect of hormone on the epithelial cell and modulation of this effect. These mechanisms are considered as the most important ways of the fine and precise adaptation of chemical signalization underlying functioning of physiological systems and organs of the living organism  相似文献   

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