每个人都曾试图在平淡的学习、工作和生活中写一篇文章。写作是培养人的观察、联想、想象、思维和记忆的重要手段。大家想知道怎么样才能写一篇比较优质的范文吗?下面是小编帮大家整理的优质范文,仅供参考,大家一起来看看吧。
说课稿初中语文篇一
指导学生通过语文基本实逐渐加深认识学习语文与生活的关系,这是贯穿于整个初中语文教学的主线。
,并且可以从中习的一些细致观察生动描摹景物的方法。峻青的《海滨仲夏夜》是该单元紧接于讲读课《春》、《济南的冬天》之后的课内自读课,是运用从讲读课上学到的阅读方法,进行阅读训练的极好练习。也是引导学生从课内向课外进行拓展阅读的重要桥梁。
根据新《大纲》对阅读和写作的要求及《大纲 教学中要重视的问题》,将本课教学目标拟订如下:
课文生字词、比喻的运用及其作用、领会文章的所写景物的特征及寓情于景的写法。
(1)培养学生运用学过的阅读方法,自主阅读的能力;
(2)把握文章细致的观察景物抓住景物的特点具体生动地描绘的方法;
感受海滨仲夏夜的美丽景色,培养热爱大自然、热爱生活的情怀。
这是一篇优美的写景文,作者抓住"海滨""仲夏""夜"等景物特征,依次写了"夕阳落山不久"、"夜色加浓"、"月亮上来了"、"月亮升得很高了"、"月己经很深了"时的海滨幽美夜景。突出了特征,用词准确优美,比喻贴切生动。因此全文的教学重点应放在让学生体味文章绘物的美上。
"一切景物描写都是人在描写,为描写人。"在文学作品中景物描写的主要作用是为表现人物、烘托思想感情服务的。故本文的教学难点在于让学生理解文章自然美之中所蕴含的人的美、生活的美。
本课安排一教时。强调课前预习,课上以学生阅读、讨论、感悟为主,教师 查、引导,帮助学生完成重难点的突破。
1、新《大纲》在《教学中要重视的问题》里指出:"教学过程应穿突出学生的实践活动,指导学生主动地获取知识,科学地训练,全面提高语文能力。"据此本课拟以启发式和讨论式方法教学。根据本课目标和内容,从学生装的知识基础、发展水平出发,应用各种教学手段调动学生的主动性,使他们在教师的主导下围绕中心议题发表各自的意见,相互交流,相互启发,相互争议,激发他们主动去获取知识,培养健康情感。
2、《教学中要重视的问题》还指出:"语文教学中,……要重视积累、感悟、熏陶和培养语感。"而且本文文质兼美,适于朗读,故又拟以诵读法教学,让学生在反复育读中体悟文章描景绘物的美。
3、学生是学习的主人,教学中尽量让学生自求自得,拥有一份相对独立的读书权。
1、从学校实际出发,以出示小黑板作为主要教学手段,一方面增强直观感,一方面可以提高课效率,增加课堂知识容量,另外还可以培养学生利用相关资料解决问题的能力。
2、把播放课文录音作为重要的教学辅助手段,通过课文录音把学生引进课文所描述的画面,接受美的熏陶。
教学环节 教学程序 设计意图
组织教学(导语)
1分钟 今天我们将继续第三单元的学习,前几节课我们跟着朱自清先生一起去欣赏江南春天的美景,伴着老舍先生一同去感受了济南冬天特有的魅力,这节课我们将和当代作家峻青一道去领略《海滨仲夏夜》的迷人景色。 建立联系
检查预习并简单评价-8分钟 1、 完成小黑板上的练习:
(1) 改正下列字词注音或书写有误之处。
(2) 用下面词造句。
2、背诵课文前三段。 1、 读准字音,理解词义。
2、 强化背诵
3、强调积累,培养语感。
复习回顾写景文章的阅读方法-2分钟 问:写景的文章该怎么读呢?
学生回顾,教师出示小黑板:
1、 文章写什么景?
2、 文章所写的景物有什么特征?
3、 作者是怎样捕捉到这些特征,并将其具体而动人地展示的?
(一)请同学们阅读课文想想文章写了哪些景物?这些景物有什么特征?{请一小组学生(三人)到黑板前讨论并完成小黑板上的表格}
段次 时间 景物 特征
1
3 从夕阳落山不久到夜色加浓
4--7
8--12 从月亮上来到夜深
理清文章思路,抓住关键词句,领会作者抓住特征描写景物的方法。
(二)问:作者是怎样捕捉到这些特征并将其具体而动人地展示的?
教师挂小黑板提示:
1、 要把景物写好,首要的是认真细致地观察,五官一齐开动,使大脑同时通过五条渠道去认识生活,经过加工构成一幅美妙的立体画面。
2、 作文章有如绘画,要先安排好,……使它有实有虚,实而不板,虚而不空。 --老舍《谈叙述与描写》
3、 一切景语皆情语。 --王国维
(学生根据提示阅读、讨论,教师适时点拔。) 利用相关资料启发学生自求自得,领会文章观察细致、描写具体生动之妙,训练其阅读能力,突破重难点
结束
6分钟
请同学们闭上眼睛听课文朗读录音,在脑海中展示文章提供给我们的图景,再来领略一番这《海滨仲夏夜》的迷人风光。 1,培养想象力
2, 让学生接受美的熏陶,从中获得美的体验。
布置作业
1分钟 1, 阅读朱自清的《绿》,想一想这一篇经典美文,为什么美,美在哪里?
2,以《郊尾冬天的早晨》为题,抓住景物特征,写一篇观察日记。 1, 拓展阅读实现自读课从"课内"向"课外"过渡的桥梁作用。
2, 引导学生关注生活,观察生活。
板书设计:
五观齐动,全面感知 景 热爱、赞颂
抓住变化,细致观察
联想修辞,虚实结合 美 (生活美)
说课稿初中语文篇二
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说课稿初中语文篇四
各位评委老师,上午好。我说的课是高中生物必修一第四章第三节《物质跨膜运输的方式》。我将从教材分析处理、教法学法教学手段、教学过程三大方面说明。
教材的地位和作用
本章是介绍细胞的物质输入和输出,第三章已经介绍了细胞膜的化学组成和结构及大致功能,第四章前两节已学习了生物膜的结构模型和物质跨膜运输实例。本节着重介绍细胞膜控制物质进出这一重要功能,包括小分子或离子进出细胞的方式和大分子物质进出细胞的方式。通过对几种跨膜运输方式的探究,并运用数学坐标图来表达三种方式的规律和特征,可以培养学生对图表数据的解读能力,即信息解读和知识迁移转化的能力。
2。教学目标
依据课程标准结合本教材的特点,确定如下目标:
知识目标:说明物质进出细胞的方式
能力目标:培养学生信息解读和知识迁移转化的能力
情感目标:通过对生命现象的阐释,体会生命的物质性,养成合作学习的意识,培养严谨的科学精神。
3.重难点
重点就是物质跨膜运输的三种方式,其中两种被动运输方式,学生已有扩散和渗透的知识基础,较易理解。难点是主动运输。
4。教材处理
学生学过呼吸运动中肺换气、肺部气体交换,已有对物质交换的了解。通过对前几章的学习,学生已经具备了细胞膜的结构、水分跨膜运输实例的基础,掌握了蛋白质多样性的知识,同时具备了一定的认知能力。但学生对跨膜运输方式还停留在感性认识层次。本节依次讲解被动运输方式、主动运输方式及意义。
教法:
采用教师主导,学生自主,合作和交流讨论相结合的方法。总体思路为:展示现象→ 提出问题→ 解释原理 →总结概念,使学生综合运用到课程标准所提到的"观察,描述,比较,概括,分析,解读图表"等技能,并配以多媒体辅助教学。
2。学法:
主动运输是本节课的教学重点和难点,可采用对比的方式进行物质出入方式的学习,通过观察讨论的方式让学生自己找出被动运输和主动运输的主要区别来掌握。
3。教学手段:
课件显示运输方式动画
(一)复习细胞膜的成分和结构,利用“问题探讨”用多媒体展示提出问题。
设立问题情景,创设物质跨膜运输的思维平台,为学生的有效发散思维提供背景,培养学生的主动思维能力,为进一步突破难点做铺垫,激发学生学习激情。
(二)几种物质运输方式
1。小分子和离子的跨膜运输
(1)多媒体展示扩散现象,引出物质运输的两种方式被动运输和主动运输的概念,让学生分析水分子进入细胞的原因和方式,总结出自由扩散的概念,多媒体动画展示自由扩散的过程,组织学生讨论,得出自由扩散的特点。该部分内容简单,通过多媒体展示,使抽象内容形象化,便于学生理解。此时比较扩散和渗透两概念的异同。
(2)进一步提出问题:葡萄糖不能通过人工合成的脂质双分子层,但对于细胞来说,葡萄糖又是必需的,它是怎样通过细胞膜进入细胞的?激发学生的学习兴趣和探索激情,让学生尝试作出解释,再指出载体蛋白的作用,总结出协助扩散的概念,多媒体动画展示协助扩散的过程,学生有了自由扩散知识的基础,很容易得出协助扩散的特点,此时引导学生自主列表对比两者异同,并回答问题:①自由扩散与协助扩散需要消耗能量吗 ②自由扩散与协助扩散有什么相同点? 有什么不同点 ?③自由扩散与协助扩散为什么被称为被动运输 ?组织学生思考和讨论,得出答案。
(3)更进一步提出问题:如果只有被动运输能满足细胞生命活动的需要吗
多媒体展示相关资料。
组织学生分组讨论:为什么这些物质可以逆浓度梯度运输呢?
师就讨论结果矫正,精讲点拨。主动运输的概念。多媒体动画展示主动运输的过程,引导学生得出主动运输的特点。并组织学生分析三种运输方式异同。继续完成填表。
提出问题:影响自由扩散、协助扩散和主动运输速度的主要因素各是什么?画出细胞对某物质的自由扩散、协助扩散和主动运输速度随细胞外浓度的改变而变化的曲线图。
组织学生分组讨论,并作图展示各组成果。
本环节巩固理论知识是对课本知识扩展和对重点,难点内容的深入理解和总结,只有理解了三种运输方式的异同,才能完成本环节教学任务,既突显书本知识,又培养学生的团结协作的精神,提高学生制作图表的能力和抽象化思维能力的形成。
2。大分子的运输
引导学生回忆分泌蛋白的分泌过程,得出胞吐现象,提出问题:白细胞是如何吞噬病菌的。 显示有关图片。 比较其与跨膜运输方式的不同。
提出问题:胞吞和胞吐体现了细胞膜结构的特点是什么
3。与社会的联系
简单描述囊性纤维病的机理以及病毒感染中,药物比较难杀灭病毒的
原因
4。技能训练
指导学生就《技能训练》部分进行讨论
(三)、反馈练习
1。画出三种运输方式随细胞外浓度的改变而变化的曲线图。
2。当堂检测题
针对物质跨膜运输方式的特点和不同而设计,让学生思考完成具有针对性的练习,进行知识巩固和教学效果反馈,及时纠正错误的理解和片面的认识。
本节课符合新课标的理念,改变了以往填鸭式的教法,体现了教师为主导,学生为主体的教学模式。这部分内容本身并不难,学生在学习的过程中相对轻松,但是如果不把新旧知识进行整合,在解题的时候还是存在一定困难。在分组讨论中,虽然学生的回答不一定完整,但还是从多角度对学生给予积极的肯定,从而增强了学生的自信心。在教学节奏的把握上,由于学生讨论和交流比较花费时间,容易出现前紧后松或是前松后紧的情况,因此在时间上应当注意控制。
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说课稿初中语文篇六
上午好!今天我说课的内容是(人教版)五四制二年级上册第六单元信息窗5《100以内数的连加、连减、加减混合》。首先我对本节教材进行一些分析。
本节课是在学生学习了100以内加减法,具备了初步的计算能力进行教学的,其目的是由解决现实情境中的问题引发学生对数学知识的学习,然后把学到的新知识又作为解决新情境中的问题的工具,让学生把解决问题与知识学习融合在同一过程中,形成以解决问题为线索的基本框架。教材没有直接出示运算式题,而是在学生解决教材中提出的“买一只海螺和一只珊瑚,还剩多少元钱?”或学生自己提出的其他问题的过程中,通过探索获取加减混合运算的方法,然后利用获取的方法,解决其它问题,实现解决问题能力与基础知识和基本技能同步发展。这种思维方法对孩子以后的学习有很大的帮助。
基于以上认识,我把教学目标确定为:
知识与能力:结合具体情境,初步掌握100以内加减混合运算的顺序,能正确掌握连加连减及加减混合运算的计算方法。
过程与方法:发展估算意识和能力,体验连加连减和加减混合的计算方法,培养学生的创新意识和合作交流的能力。
情感态度与价值观:在提出问题、解决问题的过程中,感受数学来源于生活、充分体验解决数学问题的成功喜悦,增强对数学学习的信心和兴趣。
教学重点:发展问题意识,把提高解决问题的能力与提高计算能力、培养创新精神有机结合。
教学难点:体验连加连减和加减混合的计算方法,并学会表达交流解决问题的过程和结果。
学生已有一位数的连加连减加减混合运算的知识作为基础,并且两位数加减两位数的笔算为学生学习本节课积累了一定的数学思想方法经验。本班大部分学生的计算能力都很不错,但也有个别学生计算较慢,因此,在教学中,除了对于大部分学生的指导外,还特别要关注计算较慢的学生。为了提高学生的计算能力,还要经常进行口算练习。
根据新课程理念,学生已有的知识、生活经验,结合教材的特点,我采用了以下教法。
为了使数学知识、思想和方法在学生的数学实践活动中得到理解与发展,这节课我主要采用小组合作学习的形式,辅以“情境探究”法、“观察法”、“演示法”、“比较法”等,实现师生互动,生生互动,有计划地对学生进行思维训练,进一步激发学生学习数学的热情。
分组讨论与自主探究相结合。让学生“活”起来,是优课的一个重要特征,面对同一个问题,学生能够主动地去发现、探索,他们就迫不及待地想发表自己的见解,于是通过分组讨论的形式,为学生展示自我提供了舞台。在课堂上学生始终是学习的主人,而教师真正把学习的时间和空间还给学生,让其有自主探究、合作交流、共同创造的机会,有效促进了师生互动、生生互动。
本着让学生“主动参与、乐于探究、勤于动手、学有所得”的理念,我设计了如下教学过程:
第一个环节:创设情境,提出问题。这一环节以主人翁-丁丁”海边游玩”为引子,创设“海边买纪念品”这一情境,让学生帮助老师整理相关信息,然后提出数学问题,培养了学生的问题意识。
第二个环节:探究方法,解决问题。给学生足够的时间去探讨解决问题的不同方法。同时通过比较,找到自己喜欢的解题方法。在学生自主探索的过程中,列出连加、连减和加减混合运算的算式,体会连加连减及加减混合运算的意义及运算顺序,提倡用自己喜欢的方法,同时也着力引导学生掌握基本的算法,促进学生数学思维的深度发展,使学生面对具体情境和数据时能选用比较灵活的计算方法。这一环节的设计,真正体现了“学生是学习的主体,教师是学习的参与者、组织者、引导者”这一理念。
第三个环节:联系实际,灵活运用。本环节设计的练习巩固了本节课所学的100以内数的加减混合运算的知识,同时将所学知识综合运用到解决实际问题中,提高学生综合运用知识的能力,使学生感受到数学与生活的联系,体会数学的工具性。第四个环节:课堂总结。让学生谈谈本节课学会了哪些知识,不仅培养了学生总结概括的能力,还让学生的情感得到了进一步升华。
我的板书力求简洁、明了。重点板书了连减的竖式计算方法,连加的竖式计算方法让学生板演。整个教学设计,我以学生的发展为本,鼓励学生积极参与课堂活动,亲身经历知识的形成过程,感受数学生活化,展示数学的魅力,实现“人人学有价值的数学”这一目标。以上是我的说课内容,如有不当之处,敬请各位领导和老师批评指正,谢谢大家!