在日常学习、工作或生活中,大家总少不了接触作文或者范文吧,通过文章可以把我们那些零零散散的思想,聚集在一块。相信许多人会觉得范文很难写?快回答整理了10篇最新说课稿数学 说课稿ppt,希望您在阅读之后,能够更好的写作说课稿ppt。
说课稿ppt 篇一
汉语拼音是学习汉字,学说普通话的工具。对于学龄前的孩子来说学好拼音是很重要的。它将为入小学的汉字学习打下良好基础,但同时也是一门比较枯燥乏味的课,幼儿学完以后掌握的怎么样,发音是否准确,书写是否正确,孩子是否能熟练运用还是一个重要课题。针对这些问题,我根据《新课标》提出的“汉语拼音教学尽可能趣味性,宜以活动和游戏为主”,“积极倡导自主,合作,探究的学习方式”,遵循幼儿身心发展和学习规律,充分发挥师生双方在教学中的主动性和创造性,选择了开放而有活力的,更适合幼小过渡阶段的教学策略。
学前班的幼儿天真活泼,直观形象思维能力较强,容易被新颖的刺激物所吸引,但注意力保持时间有限。对于拼音教学来说,就要根据学龄前幼儿的心理活动特点和认知规律进行设计,变枯燥的拼音符号学习为愉快的学习体验之旅,激发幼儿对拼音的兴趣,并在学习拼音的过程中形成良好的说话和听讲习惯。因此,我对原有教材进行了整合简化,将以往一课所学的字母,基本音节整合在图画和儿歌中,使无意义的拼音内容成为有趣的故事,·孩子们生活中常见的事物,注重了情感态度,知识能力之间的联系。让幼儿知道所学习的知识从生活中而来,能轻易进入课堂所创设的情境,减轻学习压力。
根据课程对拼音教学的要求,教材特点,结合幼儿的实际情况,本次说课将围绕该三部分内容的教学展开阐述。
(一)知识目标:学会前鼻韵母un,读准音,认清形。
(二)技能目标:能够正确书写un,读准un的四声。
(三)情感目标:让幼儿在学习拼音的过程中收获到快乐,体验到成功的喜悦。
重点:un的发音、un的四声和un的书写。
难点:un的发音和un的四声读法,为第二课时的拼读教学做准备。
教具准备:拼音卡片、图片。
围绕以上的教学目标、教学重难点以及学生的学情,我将从以下几个方面设计本课的教学过程:
1.创设情境,复习导入。
2.借助图画“两只蚊子”的故事引出前鼻韵母un。
3.利用图画蚊子翅膀的形态利于记忆的特点,识记前鼻韵母。
4.通过教师示范、学生模仿的形式认读前鼻韵母un。
5.以游戏"开火车"的形式固前鼻韵母un的认读。
6.利用“un的四声自编儿歌”巩固前鼻韵母un的四声练习。
7.通过情境叙说“请un回家休息”来帮助幼儿记清"un"的书写格式。
鉴于学龄前幼儿活泼好动,易于接受直观、生动事物的特点。在教学中,我努力创设丰富多彩的教学情境,将抽象、枯燥的汉语拼音同有趣的游戏、儿歌、故事、比赛等结合起来,把幼儿带入一个“有声有色”的拼音乐园中去学习。如在复习导入这一环节中,我设计了介绍老朋友见面认识就打招呼的情节调动幼儿的学习兴趣,充分激发幼儿的学习欲望。老朋友是已学过的前鼻韵母an`en`in及其四声,介绍的过程在于巩固已学的3个前鼻韵母的发音为后面的拼读作准备;利用两只≮www.kuaihuida.com≯蚊子的故事并观察图画蚊子翅膀的形态(一只蚊子翅膀朝上,一只朝下)来让幼儿识记前鼻韵母un;在课堂上让幼儿开火车接读拼音;用“我来问你来答”的形式让幼儿根据自己以往的拼读经验读出un的四声并自编四声儿歌等,让幼儿在学中玩,玩中学,寓教于乐,使拼音学习变得生动有趣,充满吸引力。
幼儿是课堂教学的主体,是学习活动的主体。所以在教学中,我们应尊重幼儿,让幼儿做学习的主人,充分发挥他们的主动性和创造性。在课堂上我们力求做到:要扶的扶,能放的放。采用“先扶后放”逐步放手的方法,鼓励幼儿运用已有知识去自主探究新知识。如,在教读前鼻韵母的时候,我先领着幼儿读,当幼儿基本掌握发音方法后,我通过“我当小老师”的形式鼓励幼儿来领读;分组比赛读,男生女生谁更棒等多种形式,不仅让幼儿的潜能得到发挥,让他们的自信得到飞扬,而且他们能够体会到成功的喜悦,更加激起了他们主动学习的愿望。
儿童学习汉语拼音,是一个从言语实践中来,又回到言语实践中去的过程。在教学中,我努力地为幼儿创设一种语言环境,让幼儿在具体的语言情景中学习音节,如,当学完了前鼻韵母un的四声后,让幼儿用戴声调的un组词、造句;还通过自编儿歌激发幼儿的学习欲望,并在儿歌中读准其四声的发音。如:一声un温度温度un,un,un;二声un蚊子蚊子un,un,un;三声un站稳站稳un,un,un;四声un问题问题un,un,un......因为“温度”“蚊子”“站稳”“问题”是幼儿在日常生活中用过和听过的。通过自编儿歌唤起他们的记忆,从生活中找准读音有助后面的新知识学习,加强学习与生活的联系。这样他们才会学得更主动、更快乐、更有信心。
说课稿数学 说课稿ppt 篇二
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说课稿数学 说课稿ppt 篇三
一、说教材
今天我要说的是苏教版小语第五册语文教材中第22篇课文《金子》。课文讲了彼得·弗雷特在淘金无望,便留下种花,终于获得成功的故事。旨在告诉我们要获得财富或成功就必须付出辛勤的劳动,想靠意外的收获是不现实的。课文内容简明,情节曲折,蕴含的道理深刻,是一篇人文性较强的培养学生观察、想像及朗读能力的好材料。“金子”在课文中出现了多次,含义也各不相同。对于学生来说,理解“真金”的含义,体会彼得获得成功的过程,是教学的重点,也是教学难点。因此,我在设计教学时关注了以下几点:
1、努力创设情境,帮助学生走进文本。
我通过引导学生找重点句,抓关键词,创设各种情境,指导感情朗读将学生带入文本,感受彼得在淘金无望时的孤独无助以及种花成功的喜悦。
2、坚持“对话”理念,引导学生理解课文。
课堂上通过学生、教师与文本之间对话,讨论、交流,培养学生理解、欣赏和评价的能力。
3、激发学生的想象,引导学生体验“生活”。
给孩子一个轻松愉快的环境,使孩子充分发挥想象。在交流,体验中感悟“不劳而获只能是个幻想,辛勤劳动才会梦想成真。”“坚持+智慧+勤劳=成功”“劳动创造一切。”
为此,根据课程改革和语文新课程标准的基本理念,我确定如下教学目标:
1、运用已有的识字经验和方法,学会“坑、附”等10个生字,理解新词,能正确、流利、有感情地朗读课文,通过 对 课文的诵读品味,读懂课文内容。
2、以学定教,通过创设情境,讨论、朗读等方式来培养和提高学生语言感悟能力、朗读能力和评价能力。
3、体悟彼得·弗雷特是靠自己辛勤的劳动,终于获得了成功,让学生懂得想要通过意外的收获获得财富或成功是不现实的,必须付出诚实劳动的道理。
二、说教法
由于本篇课文是一篇人文性较强的文章,所以我在本课教学中主要使用了朗读感悟法。
三、说学法
阅读是学生的个性化行为,本课教学中我确定了本课学生的学法以朗读感悟为主,引导学生通过朗读探究性、创造性地感受、理解、评价和鉴赏文章。进而培养和提高学生的思维能力,超越文本,链接生活。
四、说教学过程
根据本课的的教学目标以及第二学段的要求确定,1、2两个目标是教学重点。“金子”的本意是指物质层面的“贵重金属”,而在课文中,“金子”是指
诚实、勤劳的高尚品质。本文用“金子”做题目,同时又以“金子”为线索,贯穿全文,因此,理解“金子”的含义,深化学生的阅读感受是教学难点。我准备安排两课时引导学生达到预设的学习目标。
第一课时:引导学生把课文读正确、读流利,通过图文对照,从整体上感知课文内容,获得初步的情感体验:在语境中理解生字新词,指导两个字“甘”(独体字,注意笔顺)“钱”(左右结构,形声字),注意“盆”和“坑”音节,引发猜想,建构阅读话题,能基本说出本故事的大意。
第二课时:借助多媒体,创设情境,引导学生反复有感情地朗读课文,帮助他们读懂课文内容,了解彼得·弗雷特通过辛勤劳动获得真金的曲折过程,教育学生向彼得·弗雷特学习,培养自己靠诚实、勤劳获得成功的高尚品质。另外,引导学生在反复诵读课文的基础上,开展语文实践活动,进一步激发情感,引导学生积累丰富的语言。
下面,我着重讲第二课时的教学:本课时我打算分四个环节进行组织教学: 复习旧知,精读感悟,拓展延伸,个性作业。
下面我具体地来说一下:
第一环节:复习旧知。
我先引导学生有感情地朗读词语,接着启发学生交流初读课文后所了解的知识,然后根据学生回答,引导质疑“彼得的梦想是什么?他实现了吗?你是从哪里知道的?学生自然而然的就顺着我的问题注意到最后一段的课文,然后引出彼得的话:我是唯一一个找到真金的人,我的金子就在这片土地里,引导出问题:彼得是怎样找到真金的?这是课文的重点也是难点,所以我在上课后不久就提出,目的是让学生有充足的时间去思考。通过这一统领全文的问题,引导学生再次走进文本,去细细地感受。
第二环节:精读感悟,悟中明理。
1、阅读是学生的个性化行为,重在自悟。我以一个开放性的问题“彼得是怎样找到真金的?”要求学生默读课文,边读边划出课文中自己找到的句子。要求先读有关句子,再体会体会。在全班交流时,我以学定教,根据学生的发言相机地出示词句,加以适时点拨。具体指导,品读体味。如学生在自读第一自然段的基础上,扣住“听说、无意”明白消息的不确定性,但淘金者们仍“蜂拥而至”,体会他们缺乏理智,盲目跟从。接着抓住“一无所获、扫兴离去”,体会人们怀着失望离开的不幸。通过对淘金者们由“高兴”至“扫兴”两种截然不同的感情地进一步对比感知,指导有感情地朗读。学习第二自然段时,抓住“埋头苦干、几个月、几乎翻遍了”理解从精力上、时间上、工作量上说明彼得作的别人无法比拟的巨大付出,通过朗读让学生体会彼得是能吃大苦、耐大劳的人,但结果是“没有发现一丁点儿金子”,让学生明白上文的传说的不可靠。在品读词句的基础上,体会彼得由“希望”转向“失望”的失落心情,再次练习个性化朗读。在交流第五自然段时,我让学生读好词语“若有所悟”,并说说彼得“悟”到了什么来具体地展开学习。如“这里没有找到金子”,让学生边读边思考:彼得本来要离开,是什么使他留下来?留下后又是怎么做的?引导学生读好文中相应的句子,并描述一下彼得看到的情景,体会希望的产生,明白这希望就在这肥沃的土地里,正是这希望使彼得留下来。再让学生观察插图,想象彼得是怎样用“全部精力”种花的,此时,我出示图片:每天太阳刚刚升起,彼得就要-----;当夜幕降临时,彼得要------;在炎炎烈日中,彼得要-------;在大雨如注时,彼得要--------。等等,一方面是为了锻炼学生说话的能力,另一方面也让学生们
从内心体会彼得所经历的困难,为下面揭示真金买下铺垫。接着,我把重点放在理解彼得所说的话是什么意思上。让学生思考:彼得从这块土地里究竟获得了什么?你能悟到些什么呢?学生通过交流,知道彼得并非获得真的金子,而是获得了“财富”。最后学生畅谈感悟的基础上归纳:只要勤劳耕耘,任何土地都会奉献出你需要的“财富”。 抓住“不“不无骄傲”、“唯一”等词语,引导学生体会彼得非常自豪的心情,练习个性化朗读。
第三环节:拓展延伸,畅谈梦想。
这个环节是建立在理解文章基础之上,让学生畅谈自己的梦想,培养学生语言表达能力,同时把文本与学生实际联系起来。最后配乐朗诵《梦想》,鼓励学生通过自己的辛勤劳动来实现自己的梦想。
第四环节:个性化作业。
本环节本着语文课程标准要求“关注学生的个体差异和不同的学习需求”的准则,另外,进入中年段以后,阅读教学应拓展学生的阅读范围,拓宽视野,拓展和增加有效的积累,让学生个性作业,可以提高学生的语文素养。
五、说板书设计
板书设计上,我力求简单明了。抓住彼得实现梦想过程中的几个关键性词语,概括文章的主要内容,步步引导,让学生明确只有勤劳才能致富的道理,明白这就是彼得取得的“真金”
说课稿ppt 篇四
《每周干家务活的时间》是北师大版教材八年级数学下册第五章第一节的内容,本套教科书采用螺旋上升的编排方式。本节课通过丰富的实例,了解总体、个体、样本,普查和抽样调查等概念,让学生体会不同的抽样可能得到不同的结果,感受抽样的必要性。通过学习,让学生会选择合适的调查方法,解决生活中的实际问题。在同学们充分的讨论、广泛的交流下扩大了学生的思维视野,提高了学生的认知,培养了学生的合作精神和交流意识,发展统计思想,体会德育价值。
1、了解普查、抽样调查、总体、个体、样本等概念,以及普查和抽样调查的应用。并选择合适的调查方法,解决有关现实问题。
2、经历调查、收集数据的过程,感受抽样的必要性,选择合适的调查方法,解决有关现实问题。
3、进一步发展统计思想,培养学生热爱劳动、勇于实践的优良品质。
1、重点:了解普查、抽样调查、总体、个体、样本等概念,感受抽样的必要性。
2、难点:选择合适的调查方法,应用多样的方式解决实际问题。
指导探索法;讨论法、
本章导入
随着信息技术的发展,数字化时代的到来,人们每天面对着大量的数据,从国民生产总值到天气预报,从人口预测到股票投资,统计存在于国民经济和日常生活的各个方面。数据处理也因此变得更加重要。具有统计的基本知识已成为每个现代公民必备的素质。
(在导入新课的过程中体现了学习数据的收集与处理的重要性和必要性。)
1、活动与探究
同学们,你们每天在家都帮父母做家务活吗?主要做些什么呢?每周大约多长时间呢?
你们每周干家务活时间的平均数、中位数、众数是什么?
教师活动:提问平均数、中位数、众数的概念。
学生活动:全班先分四组进行数据汇总,得到本组同学每周干家务活的平均数、中位数和众数,在进行各小组汇报、交流。
【通过对这些调查活动的分析,引入普查、抽样调查、总体、个体、样本等概念】
2、介绍新知识
(1)普查:为了一定的目的而对考察对象进行的全面调查。
(2)总体:所考察对象的全体。(如上述问题中的总体为“全班同学每周干家务活的平均时间的全体”,注意这里“考查对象”不是学生而是学生干家务活的时间。)
(3)个体:组成总体的每一个考察对象。(如上述问题中的个体为“全班每一个同学每周干家务活的平均时间”)
为了准确了解全国人口状况,我国每10年进行一次全国性人口普查,在考察我国人口年龄构成时,总体是什么、个体是什么?
总体:就是具有中华人民共和国国籍并在中华人民共和国境内常住人口的年龄。
个体:就是符合这一条件的每一个公民的年龄。
教师活动:教师引导学生,这里所说的“考察对象”是指表示事物某一特征的数据,如对全国人口普查时,考察对象是我国人口的“年龄”。
学生活动:结合课本176页的统计图四人一组进行讨论,知道大概的年龄结构。
讲一个笑话对原有的情境进行变式,引起学生对普查局限性的思考,从而引出抽样调查,感受抽样的必要性。【“儿子,帮妈妈买盒火柴去”“这次注意点,上次你买的火柴好多划不着。”………儿子高兴的跑回来。“妈妈,这次的火柴全划得着我每根都试过了”笑过以后,谈谈你的看法】
议一议
1、全国所有八年级学生每周干家务活的平均时间是多少?你能用普查的方式得到这个数据吗?你准备如何获得这个数据?与同伴交流。(鼓励学生解决方式的多样性)
2、我们班上有多少男生?全校呢?全会宁县呢?全白银市呢?全省呢?全国呢?你准备用什么方式获得这些数据?(鼓励学生解决方式的多样性)
3、你能用普查的方式调查某一天你所在地区的人口流量吗?(由于每个人离开某地的方式不同,且受到时间等条件的限制,一般无法对所有的个体进行普查,有说普查的也应该鼓励。举生活中的实例)
4、你愿意采用普查的方式了解一批日光灯管的使用寿命吗?(由于检查日光灯的使用寿命时,对日光灯管会造成一定的破坏,一般用抽样的调查方式)
【普查的困难】
1、总体中的个体数目较多,工作量较(太)大,无法一一考查;
2、受客观条件的限制,无法对个体一一考查
3、考查具有破坏性,不允许对个体一一考查
解决的办法:抽样调查。
【抽样与样本】
从总体中抽取部分个体进行调查,这种调查称为抽样调查,其中从总体中抽取部分个体叫做总体的一个样本。
例如:
1、我国每五年进行一次全国1%人口的抽样调查,其中被抽取的1%人口就是全国人口的一个样本。
2、说明在下列问题中,总体、个体、样本各是什么?
(1)为了了解一批灯泡的寿命,从中抽取10只进行试验.
(这批灯泡寿命的全体是总体,每个灯泡的寿命是个体,抽取的10个灯泡的寿命是总体的一个样本.)
(2)为了考察会师园一年中每天进园的人数,在其中的30天里对进会师园的人数进行统计.
(这一年中每天进会师园的人数的全体是总体,每天进会师园的人数是个体,所抽取的30天里每天进会师园的人数是总体的一个样本.)
(3)为了考察一个学校的学生参加课外体育活动的情况,调查了其中20名学生每天参加课外体育活动的时间。
(总体是:参加课外体育活动全体的时间。样本是:20名学生每天参加课外体育活动的时间。个体是:每位学生每天参加课外体育活动的时间。)
1.举例说明什么时候用普查的方式获得数据比较好,什时候用抽样调查的方式获得数据比较好。
归纳总结本节课所学习的内容
1、课本177页,数学理解1题。2、“你怎样对待你的父母”主题调查
父母的关心是无微不至的,但是现在大家回过头来想一想,我们是怎样对待自己的父母的呢?班干部组成一个调查小组,以“你怎样对待你的父母”为主题,设计几个问题,如:你知道你父母的生日吗?在父母生日的时候,送过父母小礼物吗?在家主动帮父母做家务吗?当父母批评你的时候,你持什么态度呢?等等.开展调查,写出调查报告,星期五周会上全班同学进行交流。
说课稿数学 说课稿ppt 篇五
“圆的认识”是九年义务教育六年制小学数学第十一册第四单元“圆”中的第一节课。这节课的内容包括:圆的特征、圆心、直径和半径。
“圆的认识”是在学生直观认识圆和已经较系统地认识了平面上直线图形的基础上进行教学的。它是学习曲线图形的开始。它与“圆的周长和面积”、“轴对称图形”的学习关系十分密切。所以正确树立圆的表象,掌握圆的特征,是本课的首要任务。
根据教学内容、教学大纲要求以及学生的认识特点、年龄特征确定本节课的教学目标为:感性目标:使学生认识圆,掌握圆的特征;理解和掌握在同一个圆里半径和直径的关系。
理性目标:让学生通过观察、实验、等数学活动过程认识圆,进一步发展空间观念和初步的探索能力,感受到圆的美。
本节课的教学重点是掌握圆的特征;理解同圆或等圆中半径和直径的关系。因为这是今后系统地学习“圆”的知识的重要基础。
根据教学内容知识间的内在联系和学生的认知规律,遵循教学有法,教无定法,贵在得法的原则:
1、根据本节课的教学内容及学生的认识水平和认知规律,这节课采用演示、操作等直观方法进行教学。通过教师的教具演示和学生的画、折、量等动手操作,使学生获得充足的、丰富的感性材料。在充分感知的基础上,通过叙述操作过程,把感知经过思维转化为表象,并在教师的指导下,抽象概括出圆心、半径、直径等概念。
2、在教学中充分利用学生生活中的问题,引导学生通过自主学习去思考问题,掌握知识。认识圆的特征,探索求圆的特征的方法,使学生在自主的活动中学会学习。
进行了如下设计:
(闭眼联想)八月十五,中秋,全家人团聚一起,品月饼,赏圆月当空。门前是一片平静的湖面,一滴水从上面滴入后,在水面上荡一圈圈水纹。在这一句话中你感觉到这些景色美吗?那些事物与景色与本节课内容有关?
1、初步感知圆
首先让学生举例说明生活中哪些物体的形状是圆的。让学生初步从生活中感知圆,培养空间想像能力, 形成正确表象——圆是一种平面上的曲线图形。
(1)找圆心
首先让学生把事先准备好的圆形纸对折后打开,用笔和直尺把折痕画出来,并在圆形纸的其他位置上重复上面的折纸活动二、三次。操作后,问:“你发现了什么?”学生亲手操作后,发现所有的折痕都会相交于一点。这些折痕都相交于一点,正好在圆的正中心,我们数学上把这一点叫作圆心,用字母“o”来表示。设计意图:通过学生的直观操作,使学生的学习过程“动作化”,调动学生多种感官参与学习,并有意设置一些认知冲突,让学生积极主动地参与知识的形成过程。
(2)认识半径、直径,采取学生独立与文本对话,教师组织学生分析关键字眼的方法进行。设计意图:培养学生阅读文本,对话文本能力。
(3)半径和直径的关系
分组讨论利用“研究发现单”定出研究目标,在一个圆里,半径和直径有什么关系?通过测量和比较,让学生理解和掌握在同一个圆里半径和直径之间的关系,让学生用含有字母的式子表示半径是直径的一半、直径是半径的2倍关系。得出d = 2r与r = 2/d的字母公式,并在练习中通过填表强调了圆内半径与直径的对应关系,还要求学生在圆内一些线段中,找出半径和直径。 设计意图:合理发挥学生的主体作用,让学生动脑、动手、动口、动眼,自主探索知识的形成与发展,并及时巩固学习成果。
练习是巩固新知,形成技能的重要手段,对学生的创新思维能力的培养起着举足轻重的作用,这一部分可通过一些拔高练习达到知识的进一步深化。有机地配合新知的学习,讲练结合,最大限度地发挥习题发展学生思维能力的作用
1、课后作业88页1—4
2、判断题。(对的打“√”,错的打“×”)
经过圆心的线段都是直径。()
所有连结圆上两点之间的线段中,直径最长。()
直径是4厘米的圆比半径是2厘米的圆大。( )
3、猴子造车,一辆轮子是方的,一辆轮子是圆的。
通过“这节课你学会了哪些知识?你最大的收获是什么?你还有什么知识要提出来?”来使学生进一步内化所学的知识,自主地完善自己的认知结构。
板书设计: 圆的认识
圆心:用字母“o”表示。
直径:通过圆心并且两端都在圆上的线段;用字母“d”表示。
半径:连接圆心和圆上任意一点的线段;用字母“r”表示。
在同一个圆里 d = 2 r 或r = 2/d
说课稿数学 说课稿ppt 篇六
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说课稿ppt 篇七
本课依据“健身育人,健康第一”课程理念,通过亲身体验、设疑解惑等教学策略,遵循循序渐进的原则,设计由易到难的教学流程。教学中,给予学生一定的时间与空间,让他们在学习过程中感受学习的乐趣,增强展现自我的信心。
1、本节课的教学内容1支悬:推小车4-1 2.综合活动:钻山洞2-1
2、教材分析
本课的“支撑与悬垂”属于《体育与保健》四年级第二学期内容,主要发展学生上肢力量及身体协调等能力。四年级支悬共4课时,本课是第一课次。在本课中希望学生能体验不同的支撑姿态,由易到难,由单人至双人的配合,递进式的学会正确的支撑方法。让自己力量及协调等素质提高的同时能充分展示自我,增强自信。
综合活动——钻山洞,共两课时。钻山洞是需要学生运用已经学会的知识进行合作性的游戏,并体会不同支撑姿态的不同要求,让学生在游戏中掌握知识,在合作中迈向胜利。
1、教学对象:四(6)班
2、基本情况:该班学生活泼好动,对体育活动有广泛兴趣,喜欢学习别人的。运动技巧并进行攀比。自信心强,但有时过高的估计自己的能力,还存在着缺乏合作精神等不良倾向。
1、支悬:推小车4-2
2、综合活动:钻山洞2-1
1、学习“推小车”原地支撑的方法并能保持直臂支撑动作至少10秒。
2、学习“钻山洞”的方法与规则。
3、体验支撑时的身体姿态,发展上肢力量,提高身体协调能力。
4、增强学生自信心,养成相互协作的好习惯。
重点:直臂支撑
难点:正确直臂支撑姿势
小干部整队后师生问好,教师宣布上课内容,学生进入上课状态。
“同学们,以前我们玩过速跑加分的游戏还记得吗?”“今天老师将加大游戏难度,你们还能获得胜利吗?”通过提问激发学生的好奇心和好胜心,将他们的注意力聚拢于游戏中。在小组长的带领下,学生延固定路线慢跑,当听到或看到老师给出的号码,相应号码的学生快速跑向教师拍击手掌,记分为3.2.1最后的0分,最终获得分数最多的组获胜。
思考:充分利用四年级学生争强好胜的心理,以一个竞争性较强的游戏作为热身
活动,使学生的注意力快速集中,为后面的主教材教学营造一个良好的学习状态。
通过教师的引导“今天老师要看看同学们能利用双臂支撑,摆出多少种造型呢?”启发学生去尝试各种用单臂、双臂、蹲撑等适合自身能力的支撑姿态进行练习。学生在练习过程中教师适时提出问题“我们在支撑的时候双手的距离,手臂的状态,以及肩部的感觉是怎么样的呢?”让学生不仅要体验支撑时的身体姿
态,还要根据教师的提问寻找答案,然后教师将问题由上肢开始向身体姿态延伸,最终得出正确的支撑方法(直臂顶肩—收腹—不塌腰—不提臀—身体成一直线)。随着大部分同学掌握正确的方法后,教师顺势由单人练习过渡到双人配合支撑,在问题引领下,帮助同学们了解原地单人支撑和双人“推小车”支撑的的共同点和不同点,不断完善动作。最后,在激励游戏“比一比”中,看哪一组小车坚持的时间最长,哪一组的姿态最棒!教师引导学生积极评价并进一步体会“推”的方法与“小车”支撑的姿态。
思考:整个过程由易到难,学生的练习重点与问题同步进行,都是由上肢慢慢延
伸至身体,让他们始终带着思考去练习,不仅能增加学生学习的积极性,更能提高练习的实效性。“比一比”的游戏也为学生提供了展示自我,增强自信的平台。
教师将队伍分成若干组,每组5人,学生紧挨一起手撑地提臀成山洞,由第一个学生以爬行姿势开始过山洞,过了山洞后立刻组成新的山洞,依次类推直至最后。最终速度最快的组获胜。当学生了解方法和规则后开始第一次的尝试,教师提出问题“游戏中两个角色应该怎么做才能更顺利的游戏呢?”学生在这个时候体验与思考同时进行着,教师不时的引导让学生得出最佳方法(“山洞”要高,尽量提臀。过“山洞”要低,低进低出。)
思考:“钻山洞”是一个让学生体会协作的过程。学练中,教师的引导,学生寻
找合理的方法,师生逐步完善活动方法,通过比赛,感受胜利的喜悦,通过游戏间的合作交流养成团结协作的好习惯。
通过教师提示,比如:大象的走是怎么样的(沉重)猫的走是?(轻灵)等等,随着提示学生尽量将自己的理解演绎出来。表演好的同学请他来给大家出
说课稿数学 说课稿ppt 篇八
各位老师:
大家好!今天我说课的题目是《修饰倡议书文字》,我将从以下几个方面来进行说课:说教材,说学生,说目标,说教法,说学法,说媒体,说设计,说小结。
本课是选自电子工业出版社《小学信息技术》第3册第1单元 班级环境齐关心中的《第3课 修饰倡议书文字》,教学对象是小学四年级的学生。
:格式工具栏中的`“字体”、“字号”、“字体颜色”的设置以及格式刷的使用。
本课是教材关于word20xx文字处理知识的铺垫延伸,并且贯穿着以后整个的word知识教学,是学生能够顺利、快捷操作使用word的基础之一,也是形成学生“了解熟悉-技巧掌握-综合运用”这一合理知识链的必要环节。
:(1)文字字体、字号的设置方法;字号的表示方法及大小比较。(2)文字颜色的设置方法。(3)格式刷工具的使用。教学难点:(1)对文字进行合理地美化。(2)各种文字格式的搭配。
学生在学习前两课的基础上,已经初步认识了word软件,基本掌握了文字输入及选中、修改等相关操作。本课将让学生了解和掌握word软件中设置文字格式的基本操作,并在学习过程中感受美,欣赏美,培养审美意识。
另外,本课的教学对象是四年级的学生,他们对学习计算机非常感兴趣。不喜欢计算机理论知识的学习,非常喜欢实践知识,擅长于动脑动手,但很难把握操作技巧,因此在本课的教学中,注重学生自己动手去探索,去实践。
根据信息技术课程标准的要求和教材特点,结合四年级学生的认知规律,我将本节课的教学目标确定如下,它们分别是:
⑴ 学习了解文字修饰的基本方法,并能熟练掌握。
⑵ 了解格式刷,并能使用格式刷进行快速设置。
通过教师讲解和学生探索实践,逐步掌握文字美化的方法,能够根据实际需要完成文字修饰工作。
通过学习培养学生良好的审美能力,在不断尝试中激发学生的求知欲和创新思维,同时,继续培养学生“先选定,后操作”的操作规范。
说教法:通过对学生学习情况的了解,以及新课程标准要求:课堂教学要以学生为中心,充分发挥学生的自主能力和创新能力,调动学生学习的积极性,本着这个主导思想,结合四年级学生的特点,在教学过程中教师作为引领者,通过情境教学,创设情境,激发学生的学习动机和学习兴趣,有效运用心理激励,让学生乐学;通过任务驱动法,引导学生积极思考,让学生动起来,成为课堂上学习的主体;通过尝试教学法,放手让学生做力所能及的事,体验收获成功的快乐。
说学法:课堂不仅是让学生获得知识,更重要的让学生掌握学习知识的方法。为了更好的体现学生的主体地位,因而在课堂中以“动中学-学中探-探中悟”的形式,通过让学生动手实践、自主探究、合作交流,使整个学习过程活起来,动起来,学生在课堂上通过动口动手又动脑,既获取了知识,又培养了能力。
1、硬件资源:计算机网络教室及教学系统;2、软件资源:powerpoint
根据本课的教学内容及信息技术课程学科特点,结合学生实际认知水平和生活情感,我设计的教学流程大体如下:
1、创设情境,激发好奇;
2、导入新课,揭示课题;
3、由扶到放,学会学习;
4、创作交流,发现问题;
5、成果展示,课外延伸;
下面我将逐步进行解说:首先,创设情境,激发好奇心。爱因斯坦说过,兴趣是最好的老师。小学生对新奇事物充满好奇心,因此,在新课导入时,我利用一段外星小朋友爱丽丝来地球求学的视频,以爱丽丝的三个难题贯穿整个教学过程,创设情境,充分激发学生的好奇心和学习兴趣,为后面的课堂教学服务。
具体呈现如下:同学们,今天在咱们的课堂上来了一位特殊的朋友,让我们一起来看看他是谁吧?(播放视频)原来是火星小学来的爱丽丝,她想和大家一起来学习,同学们,你们愿意和爱丽丝一起学习吗?既然同学们都说愿意,那我们就把爱丽丝请进咱们的课堂中来吧!爱丽丝还带来了三个难题,你们愿意帮助爱丽丝,和她一起解决吗?看来,咱们班的同学们还真是一帮热心的好人呐!
接下来,进入第二个环节,导入新课,揭示课题。也就是爱丽丝的第一个难题:展示两份倡议书,一份未修饰文字的倡议书,一份修饰过文字的倡议书,比较这两份倡议书,揭示课题。
具体呈现如下:首先我们一起来看看爱丽丝的第一个难题吧!这是两份倡议书,爱丽丝要我们帮忙选一张最好看的贴在他们班级的宣传栏里。请同学们仔细观察这两份倡议书,说说它们有什么不同,哪一份倡议书更适合张贴在宣传栏里呢?嗯,文字的大小不一样,颜色不一样,字体也不一样。说的真好,你观察的可真仔细。那你们知道这份好看的倡议书是如何制作的吗?今天就让我们一起来学习《第3课 修饰倡议书文字》
第三个环节,由扶到放,学会学习。以教师提醒文字的美化可以使用“格式工具栏”为线索,以尝试设置倡议书标题文字格式为:“黑体”、“一号”、“深蓝”为任务,鼓励学生自己去探索发现“格式工具栏”中各个按钮作用,放手让学生动手实践。
在此环节中,我设置了两个部分,第一个部分是以教师展示格式工具栏在word界面的位置,简要介绍利用格式工具栏可以设置文字的字体、字号以及字体的颜色,之后布置任务:鼓励学生尝试设置倡议书标题文字的格式为:“黑体”、“一号”、“深蓝”,在操作过程中注意思考以下几个问题 :(1)“一号”文字和“四号”文字,哪一种字号的文字更大一些?(2)“8”和“28”,哪一种字号的文字更大一些? (3)你能将你的操作秘籍分享给大家,分享给爱丽丝吗?遇到问题可以从课本中寻找答案。由于学生的计算机水平存在差异,因此,已经完成操作的同学可以帮助自己身边的同学完成任务。在这一部分的教学中,可以请完成的比较熟练的同学演示操作,分享经验。通过这一部分的教学,不仅可以培养学生遇到问题从课本中寻找答案的习惯,也可以通过学生之间相互帮助,促进学生之间友谊的加深。第二个部分,爱丽丝的第二个难题:利用提前用屏幕录制专家录制好的视频,提出问题:为什么爱丽丝的操作不正确,你能帮她找到原因吗?引导学生得出结论:没有提前选定正文的内容,然后再操作。通过这个环节的设置,可以帮助学生养成“先选定后操作”的操作习惯。同时也能帮助学生进一步明确文字字体、字号以及颜色的设置的方法。
第四个环节,创作交流,发现问题。爱丽丝的第三个难题。展示爱丽丝的语文、数学作业以及作业要求,你能帮助爱丽丝解决这个难题吗?选择你最感兴趣的那一份作业帮帮爱丽丝。
在这一个环节中,学生可以根据自己的喜好选择一个任务进行操作。但在这两个任务中,都有同样的一个问题,要对不同位置的文字进行同样文字格式的设置,如果要一个一个进行设置,那肯定会比较麻烦。就此提出问题:“有没有什么办法可以让我们更加快捷的帮助爱丽丝完成作业要求?”引出格式刷的教学。教师先演示格式刷的使用方法,之后学生自己动手进行操作。这样进行设计,更能突出使用格式刷进行文字格式设置的便捷性,也使格式刷的介绍变得更加顺理成章了。
最后一个环节,成果展示,课外延伸。收集学生帮助爱丽丝完成的作业,采用学生自评、互评、教师评多种评价方式相结合的方法,评选出最佳作业,给与表扬和奖励。
同时,为了鼓励学生学以致用,将课堂中学到的知识应用到生活中,建议学生自己书写一份班级倡议书,并根据自己的审美观,设置文字的格式,做好文字美化工作。在这一环节中,我采用了学生自评、生生互评,教师评价多种评价方式相结合的方法,一方面可以培养学生的语言表达能力,能够正确客观的评价自己及他人,另一方面可以培养学生形成正确的审美观。在这一部分当中,我还将采取小组的推荐的形式,选取几份有代表性的,做的好的作品展示给全班同学看,激励学生不断学习,培养学生的竞争意识。
课堂中知识的学习也是为了能够更好的方便生活,服务生活,因此,我鼓励学生能够将课堂中学到的知识应用到生活中,能够了解计算机在生活中的应用,培养学生的计算机使用意识。建议学生自己书写一份班级倡议书并进行文字的美化,不仅贴近学生的实际生活,容易引起学生的兴趣,同时也能帮助学生巩固课堂所学。
最后,说小结:本课在教学中以教师为引导,以学生为主体,对本节课的内容进行回顾,说说自己的本节课的收获,以及自己在操作过程中能和大家分享的一些小窍门。通过这一环节 的设置,让学生及时对自己的学习成果进行回顾总结,做到温故而知新,分享小窍门更能让集思广益,这些也为下节课的学习打下了基础。
说课稿数学 说课稿ppt 篇九
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说课稿ppt 篇十
我说课的内容是高中数学人教b版选修2-2中第一章第三节的内容——导数的几何意义第一课时。就本课节教学实践,我将从以下八方面介绍我对本节课的教学设想:说考纲;说教材;说学情;说教法;说学法;说教学过程;说板书设计;说自评反思。
由于导数是微积分的核心概念之一,它为研究函数性质提供了有效的工具。近年高考对导数加大了考查力度,不仅体现在解题工具上,更着力于思维取向的考查,它像一条腾跃的龙和开屏的凤,潜移默化地改变着我们思考问题的习惯。数学思想的引领,辩证思想的渗透,帮助着我们确立科学的思维取向。正因如此,导数的几何意义是整个导数及其应用部分中,新课标考纲唯一一个冠以“理解”的要求标准,也是这部分认知领域的最高标准,可见其地位和意义。
教材从数形结合的思想即割线入手,以形象直观的“逼近”方法定义了切线,获得导数的几何意义,学生通过观察、思考、发现、归纳、运用形成完整概念,辩证思想得以渗透,有利于学生对知识的理解和掌握。本节知识内容相当少,但在本节的教学实践中要突出其承前(进一步理解导数的定义,探讨函数值变化快慢)启后(作为研究函数的单调性、求解函数的极值和最值等性质最有效的工具)的关键纽带作用。
通过前两节对函数平均变化率和导数定义的学习,学生对有关导数的问题已经有了初步的认识,但是由于导数定义的抽象性,学生认知起来仍具有一定的困难。本节要通过动态的课件演示,将函数的平均变化率、导数(瞬时变化率)定义生动地展现,同时挖掘切线的斜率(斜率的绝对值的大小与陡峭程度)与函数图像的走势(导数的绝对值的大小与函数值变化快慢)的关联,成为后面研究函数的单调性、求解函数的极值和最值,探讨函数值变化快慢等性质最有效的工具。激发学生的学习兴趣,提升独立探索、解决问题的能力、数形结合的能力及对知识灵活运用的能力。
根据上述考纲、教材、认知的要求,立足学生的认知水平,设定教学目标和重点、难点,从识记、理解、掌握、应用四个层次上给出教学目标,教学重点制定在非智力因素的培养上,教学难点制定在思维能力方面。
教学目标:理解导数的几何意义,会求曲线的切线方程。
教学重点:掌握在某点和过某点的切线问题的求解方法。
教学难点:让学生在观察、思考、发现中学习,归纳总结、启发 学生研究性问题。
备课准备充分,为促进学生思维方式方法形成提供动力源泉。
多媒体辅助教学,通过几何画板的动态演示,能充分发挥其快捷、生动、形象的特点,无需提出问题让学生通过小组议论形式,发现规律,更有利于难点的突破。让学生亲身经历“观察、思考、发现、归纳总结、启发学生研究性”的过程,教师针对各组的结论引导学生用逼近的思维方法,理解导数的几何意义,同时尽量为后面的单调性、极最值、函数值变化快慢等做好总结性铺垫。教给学生思考问题的方法和依据,使学生真正成为教学主体。
通过小组议论形式让学生参与教学活动,促进学生间合作学习与交流,共同探讨问题,探索解题方法,产生互动效果,提高学生的合作意识,共同来完成教学目标。
(一)回顾与引入
回顾函数平均变化率定义及其几何意义;导数的定义及其导数的物理意义,铺设类比迁移情景。提出导数的几何意义是什幺?
(二)导数几何意义的探求过程
1.切线的定义
利用圆的切线与割线的动态联系适时地给出一般曲线的切线定义(避免从公共点的个数来定义)。
2.动态观察割线与切线的关联
通过演示割线的动态变化趋势,为学生观察、思考提供平台,引导学生共同分析,直观获得切线定义。通过逼近方法,将割线趋于确定位置的直线定义为切线,使学生体会这种定义适用于各种曲线,反映了切线的直观本质,从而归纳出导数的几何意义。这里教师要引导学生归纳总结曲线在某点处切线与曲线可以有不止1个公共点。直线与曲线
只有一个公共点时,不一定是曲线的切线。
3.通过例题体现应用,归纳求解步骤。
七、说板书设计
课题:
回顾:例1.求在指定点处的切线
练习:
几何意义:
例2.求过指定点处的切线
切线的理解:
例3.探索已知切线的斜率求切线方程问题
小结:
作业:
在本节课教学过程中对学生的观察能力、分析思考能力、理解归纳能力及数形结合能力方面进行了训练和考验。注重合作交流,归纳总结,及时对各组学生所取得的成果进行肯定,从而使学生获得成就感。既注重“双基”,又兼顾提高,为学生指明课后继续研究的方向,同时也为以后的学习陈设铺垫,激发学生探索新知识的兴趣。
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