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小学三年级数学说课稿 三年级数学说课稿说学情(6篇)

格式:DOC 上传日期:2023-03-23 16:57:33
小学三年级数学说课稿 三年级数学说课稿说学情(6篇)
时间:2023-03-23 16:57:33     小编:zdfb

范文为教学中作为模范的文章,也常常用来指写作的模板。常常用于文秘写作的参考,也可以作为演讲材料编写前的参考。范文怎么写才能发挥它最大的作用呢?以下是小编为大家收集的优秀范文,欢迎大家分享阅读。

小学三年级数学说课稿 三年级数学说课稿说学情篇一

本节课是通过买东西的情境图,使学生在解决实际问题的过程中理解验算的意义和作是其次学生在以往学习加、减法计算中已经初步感受到加、减法的关系。

1、说课的内容:是三年级上册第二单元《万以内的加法和减法(二)》中加法验算部分的内容。

2、教材所处的地位和前后联系。

《加减法验算》是本单元的最后一部分内容,是在学习了三位数加、减三位数中连续进位加和连续退位减的基础上学习的。而且验算的熟练程度和学生良好的验算习惯还会影响到今后计算的准确率。所以一定要让学生掌握好这部分内容。

3、学情分析:

学生在以往学习加、减法计算中已经初步感受到加、减法的关系,例如,一年级时学生就能根据一幅图画,写出两个加法算式和两个减法算式;可以想加法算减法等,本节课要从这些已有认识出发,去探索加法的验算方法。

4、教学目标:

①通过创设具体的情境,使学生初步学会加法的验算,并通过加法验算方法的交流、让学生体会算法的多样化。

②培养学生探索合作交流的意识和能力。

③让学生用所学到的验算知识去解决生活中的问题,体会用数学的乐趣。

5、基于以上对于教材的理解和学生的分析,我确立本课的重点为:使学生能够掌握加法的验算方法。而准确地进行加法验算和验算的书写格式是本节课的难点。

6、教学准备:多媒体课件。

计算本身是枯燥乏味的,机械的训练更使学生厌烦,这是学生对数学失去兴趣的一个重要原因。因此,轻松愉悦的学习氛围、适时的评价鼓励显得尤为重要,本节课,我努力做到这一点。我尽可能以学生为主体,放手让学生自己想一想、试一试、做一做、比一比、算一算等探究情境,多给学生一些提问质疑、探索发现的机会和条件。力求让学生根据自己的学习体验,在轻松、愉快的气氛中认识验算的作用,并初步掌握验算加减法的方法。

教学中让学生从已有的认识出发,去探索加法的验算方法。体现合作学习和自主探索的要求。

(一)复习导入:

师:根据第一个算式,不用计算直接说出另外三个算式的得数,说一说你是怎么想的?

(二)创设情境、学习新课。

出示主题图:

学校要召开运动会,妈妈带小明去商店买一套运动服和一双运动鞋。

1、从图上你获取了哪些数学信息?(指名学生汇报)

2、在这买东西的过程中会有哪些数学问题呢?请同桌互相讨论讨论。

3、汇报:

提出问题

(1)一套运动服和一双运动鞋一共要多少元?

(2)应该找回给妈妈多少钱?

4、独立在本子上解答问题第一个问题,要求写横式,列竖式。

5、学生汇报,教师板演。 (引导学生说清楚计算的过程,答题要完整)

(板书课题:加法的验算)

6、学习加法的验算:

(1)讨论:怎样检验 135+48 的计算结果?可以用哪些方法?

(2)学生汇报,师总结。

(3)用你喜欢的方法进行验算。

(4)学生汇报。

7、小结:

谁来说一说刚才我们是怎样进行加法的验算的?

(三)课堂练习:

1、计算并且验算下面各题。

2、学生自主完成。

(四)小结:

师:通过今天的学习,你学会了什么?

有什么收获和感想? 回家调查一下爸爸、妈妈买东西,是怎样付钱的?

小学三年级数学说课稿 三年级数学说课稿说学情篇二

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小学三年级数学说课稿 三年级数学说课稿说学情篇四

人教版小学数学三年级上册教材第91—92页 教材分析:

本节课主要是通过多种活动,如平均分饼子、折纸等,让学生初步认识到把一个整体平均分成若干份,这样的一份就是它的几分之一。

1、使学生初步认识分数,认识几分之一,能正确地读写分数,掌握分数各部分的名称。

2、培养学生的动手、观察和判断能力,以及培养学生的创新意识和自主探究意识,感受几分之一的形成过程。

3、体验分数在生活中的应用,提高学习数学的兴趣

观察分析合作探究法 。

理解只有“平均分”才能产生分数。

使学生头脑中形成“几分之一”的表象。

多媒体课件、师生各准备正方形、长方形等纸,水彩笔。

一、创设情境,导入新课。

同学们,你们喜欢听故事吗?下面老师就给你们讲一个鼠妈妈分饼子的故事好吗?鼠妈妈有两个孩子,一个叫大毛,一个叫二毛,哥俩长得挺机灵的,又非常喜欢鼠吃妈妈做的饼子。有一天,鼠妈妈做了4个饼子,想要分给两只小老鼠吃,要使两只小老鼠得到的饼子同样多,应该怎样分呢?谁来帮帮鼠妈妈?第二天,鼠妈妈做了2个饼子,想要分给两只小老鼠一样多,应该怎样分呢?谁也来帮帮鼠妈妈?第三天,鼠妈妈有点累了,这天她只做了1个饼子,还想要分给两只小老鼠一样多,应该怎样分呢?谁再来帮帮她?(半个饼子用数字怎样来表示呢?今天老师特意请了一位新朋友它就是——分数。这节课我们一起来学习分数的初步认识。)

(教学小结:“兴趣是最好的老师”。一节好的数学课,情境的创设非常重要。小学生的特点是好玩、好动、好奇心强,对于色彩鲜艳、离生活较近、有趣味性的故事感兴趣。本节课,我首先利用课件鼠妈妈分饼的故事创设了情境导入新课,引发学生的注意力,学生思维活跃、学习积极性很高,为本节课的教学做好了铺垫。)

二、动手操作,探求交流,获取新知。

(一)认识二分之一。

1、鼠妈妈分饼子。

鼠妈妈先把饼子分成不同的两份,大毛连忙说:“我是哥哥,我吃小的。”二毛一听也连忙抢着说:“我小些,应该吃小的,大的给哥哥。”鼠妈妈看见哥俩互相谦让的样子,脸上露出了满意的微笑,她说:“好了,孩子们,不要吵了,我来重新分吧!”鼠妈妈重新把饼子分成同样多的两份,她说:“这块饼子,你们一人一半,这种把饼子分成同样多的两份,我们在数学上把它叫做平均分。”

2、演示鼠妈妈分出平均分的饼子情境图。

指出,把一块饼平均分成两份,每份是这块饼的一半,也就是它的二分之一,写作1/2。教师指导学生读、写1/2。中间的横线表示平均分,横线下面的2表示平均分成2份,横线上面的1表示其中的1份,这个分数读作二分之一。写分数时,应先写什么?(先写分数线,接着写分母、分子)

3、小组活动:用正方形、长方形、圆形和三角形折出它的1/2,并用彩笔画上斜线。把学生折出的1/2贴在黑板上。

4、演示教师折出的1/2。

(教学小结:本环节先让鼠妈妈把饼子分成不同的两份,引发哥俩的“争吵”——都要少的一部份,达到教育学生继承和发扬我们中华民族互相谦让的传统美德。然后讲解分数各部份名称,让学生对分数的了初步的认识。最后,培养学生的动手能力,让学生动手折出正方形、长方形、圆形和三角形的1/2,进一步认识分数。)

(二)认识四分之一。

1、电脑课件演示,把一张长方形纸对折,再对折,打开,提问:把这张长方形平均分成了几份?每份是它的几分之几?读作什么?写作什么?

2、小结:像1/2、1/4这样的数都是分数。

3、刚才我们认识了1/2,1/4,认识了分数里的分数线、分子和分母这个大家庭里的3位成员,还有许多分数想和我们交朋友,你们愿意和它们见面吗?教师课件演示1/3、1/6、1/8等。

(教学小结:分数里只有1/2吗?于是我又利用课件演示长方形纸的1/4,告诉学生这也是一个分数。学生兴趣来了,噢,我认识两个分数了。于是我趁热打铁,说:“还有好多好多的分数想和我们交朋友,你们愿意和它们见面吗?学生兴趣空前高潮,为下一步教学的发展奠定非常好的基础。于是接下的1/3、1/6、1/8等,学生一点就会,课堂效果非常好。)

三、巩固练习,小结本节课内容。

这节课我们通过折一折,涂一涂的方法,认识了分数,明白了怎样读写分数和分数各部分的名称,对分数有了初步的认识。现在老师出一些练习题考考你们,你们愿意接受挑战吗?(练习区1、3、4、5、7)

(教学小结:一节课上到这,学生大体都会了,为了防止他们产生自满情绪,又让他们始终保持着强烈的求知欲望,于是我又设计一系列练习,让学生在完成这些练习的过程中获得更多的发展。)

四、智慧园:实践探讨,课后想一想。

妈妈买的一大块巧克力里有一样大的8小块,怎么吃呢?方方说:妈妈吃3块,我吃4块,奶奶吃1块。他们各吃了这块巧克力的多少呢?

(教学小结:学生的好胜心理强,尝到了成功的甜头,但是仍然不满足,于是我在最后的教学中,带学生到智慧园去闯一闯,给学生留有思考和探索的余地,让学生能在独立思考与合作交流中解决学习中的问题,为下一节课几分之几的教学做好了铺垫。)

五、课堂作业:完成练习二十二第1、2题。

六、板书设计。(略)

对于小学生来说,数学学习往往是他们自己生活经验中对数学现象的一种“解读”.在教学中,如果能密切联系学生的生活实际,利用他们喜闻乐见的素材唤起其原有的经验,那么学起来必然亲切、有趣、易懂了。我利用课件鼠妈妈分饼的故事创设了以下的情境,导入新课,引发学生的注意力,学生思维活跃、学习积极性很高。小学数学要培养学生的动手能力。课堂上,我放手让学生折出分数,学生的好胜心理强,学生动手积极性很高,纷纷折出了其它分数。

分数的知识是学生第一次接触,是在整数认识的基础上进行的,是数的概念的一次扩展。对学生来说,理解分数的意义有一定的困难。而加强直观教学可以更好地帮助学生掌握概念,理解概念。在本节课的教学中,我充分重视学生动手操作,通过折纸让学生对分数的含义有一个直观的认识,充分利用多媒体课件的演示来加强直观教学,让学生加深对分数概念含义的理解,降低了对分数概念理解上的难度。

在整个课堂预设时,想的比较完美,事实上也真正上达到了预设目的。不过也存在着不足之处,比如在折分数时没有放开手让学生去折,而是不时的去指导,我想只有一次次积累、一次次思考,才能上出真正平实而有效的数学课。

小学三年级数学说课稿 三年级数学说课稿说学情篇五

1,说课内容:上海教育出版社三年级下册56—59页.

2,教材的作用和地位:这是一节概念、测量与计算相结合研究空间与图形的教学内容,它是在学生已经初步认识图形的基础上,联系一些常见物体和图形进行教学的。教材没有直接给出周长的定义,而是通过生活中的实例,让学生通过观察、操作,在获得直接感知的基础上认识周长的含义。接着,以已有的直接经验为基础,让学生根据给定的图形去数一数,量一量、算一算,进一步理解周长,知道可以怎样测量并计算出周长。本课的教学将为下节课探索长方形、正方形的周长计算方法做准备.

3、教学目标:

(1)知识技能:通过观察和操作等活动,认识周长的含义,能测量、计算一些平面图形的周长。

(2)数学思考:经历观察测量等数学活动过程,让学生在获得直观经验的同时发展空间观念,渗透“化曲为直”的数学思想。

(3)解决问题:在学习活动中,能用不同的方法解决问题。

(4)情感态度:感受数学与生活的密切联系,体验与同学合作克服困难后获得的成功,树立驾驭数学知识的自信。

4、教学重难点:

重点:认识周长的含义,会测量和计算周长。

难点:对周长含义的理解。

《数学课程标准》指出:数学学习内容应当“有利于学生主动地进行观察、实验、猜测、验证、推理与交流等数学活动”、“动手实践、自主探索、合作交流是学生学习数学的重要方式”、“学生是数学学习的主人,教师是数学学习的组织者、引导者与合作者”,那么,如何体现新课程所提倡的学习方式、教学方式呢?

我本节课设计的.思路是:

1,创设情境:为学生创设生活情境、问题情境、动手操作和合作交流的情境,激发学生的学习兴趣,更易于学生掌握数学与客观规律的联系。

2,合作学习:根据学习内容将学生分为2人一组,在合作中认知,有助于学生积极思考、探究、解决问题,获得成功体验。

3,注重实践:让学生通过观察和测量,认识周长的含义,能计算平面图形的周长并运用知识解决实际问题,经历知识的形成和运用过程。

课件,学生准备线、一元硬币、学习纸、直尺等用具.

教学过程:

1,激发热情,感知周长.

出示蚂蚁赛跑的动画,请学生说一说哪只蚂蚁跑的快为什么?

原来,红蚂蚁从起点出发又回到了起点,围着树叶的边线爬了一周,而黑蚂蚁没有爬满一周,引出一周的概念.那像这样的例子生活中有没有呢. 接着,请他们描一描平面图形的边线.这一环节由实物的边线入手,让学生通过找一找,摸一摸、说一说,描一描等活动,充分感知物体和图形的边线,为认识周长做好准备。

2认识周长.

刚才我们描的一周的长度叫什么呢?揭示课题,周长。你是怎么理解周长这两个字的呢?一周的长度。就是说三角形一周的长度就叫三角形的周长.圆形一周的长度就叫圆形的周长.最后归纳总结出:绕平面图形一周的长度就叫周长。在认识周长后再回到刚才所描的图形,让学生去观察、交流,使学生反复体验和理解周长的含义,调动学生的各种感官和学习兴趣,使学生体会到周长概念源于生活实际,也为求周长作了铺垫。

1,出示透明方格纸,学会数一数书本58页竹园和菜园的周长,加深感知:周长是所有边的长度的总和,和面积相区别.

2,出示三角形,长方形,正方形,正五边形的图形.由三角形的周长是三条边长度的和,引导学生求三角形的周长要知道它的三条边的长度,需要量三次,回忆周长的概念。那么长方形的周长呢,它是四条边长度的和,需要量四次吗?激发矛盾,回顾长方形特点对边相等,所以只需要量两次.再放手让学生去思考正方形,正五边形的周长该怎么计算.

3,当学生已经知道通过数一数,量一量,算一算的方法来计算周长,此时,抛出问题:硬币的周长该怎么求?刚才的办法行吗?渗透变曲为直的”转化”思想,并举一些生活中的例子,例如买裤子时量腰围的活动,通过对生活中的实际数学问题的关注,让学生真切感受到数学与生活的密切联系,同时也激发学生利用生活经验去主动探索解决问题的方法。

这节课里,大家不仅知道了什么是物体或图形的周长,还在学习活动中探索出了很多重要的数学知识。真不简单!希望你们在以后的学习中能够把自己善于发现、善于探索的能力更充分地发挥出来!小结生动具体,不仅关注了本节课的知识重点,更关注了学生的情感体验,有效激励了学生学好数学的信心,体现了课程标准的新理念。

小学三年级数学说课稿 三年级数学说课稿说学情篇六

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