作为一名教职工,总归要编写教案,教案是教学蓝图,可以有效提高教学效率。写教案的时候需要注意什么呢?有哪些格式需要注意呢?下面是小编为大家带来的优秀教案范文,希望大家可以喜欢。
二年级平均分教学设计 平均分的教案设计篇一
人教版课标教材第四册p12—14例1、2
1、在具体情境和实践活动中,理解“平均分”的意义。
2、通过动手操作让学生经历“平均分”的过程。
3、逐步引导学生用数学语言表达平均分过程与结果,培养学生的抽象概括能力。
对平均分意义的理解。
学生:每人15根小棒、长方形纸一张
教师:课件、小棒等
教学环节教学过程教学设计意图
1、情境:班级开联欢会要买东西,小明和小芳买了6包食品,怎么拿?哪种分法是与众不同的?
2、如果小刚也去,每人拿的一样多,怎么拿?
3、买了8个苹果,分给4个人,每人一样多,怎么分?
学生尝试分
交流
小结:每份同样多,就是平均分。
4、判断练习调动学生的生活经验,知道平均分是众多分法中的一种,进行平均分的尝试,对平均分意义的理解从不完整逐步清晰为“只要是每一份同样多的,就是平均分”。
让学生逐步用数学语言表达平均分的意思,是一种“生活数学”向“学校数学”的进步。
把15个桃子平均分成5份
学生操作
反馈学生分的方法
有可能是1个1个分的;有可能是3个3个分的;也有可能是先2个2个分,再1个1个分的的情况让学生经历平均分的过程,了解平均分的策略,促进学生对平均分意义的进一步理解。
1、举例。
2、想一想,画一画,说一说:把12个橘子平均分,可以怎么分?
3、练习
4、折一折:把一张长方形纸平均分,可以怎么分?从一些数量平均分拓展到把一个物体、甚至一个图形平均分,使学生对“平均分”概念认识更加完整。
二年级平均分教学设计 平均分的教案设计篇二
1、课程标准相关要求:
能运用数及数的运算解决生活中的简单问题。
2、教材分析:
本节教材以生活中常见的.“每份同样多”的实例合活动情境,让学生建立“平均分”概念,并结合具体的实例尝试平均分。
3、学情分析:
“平均分”的概念学生不是很了解,但学生对“每份同样多”有一定的了解,所以学习起来不是很困难,教学中,教师要多引导学生进行分一分,加深对平均分的理解。
1、建立“平均分”的概念,知道平均分就是每一份分得结果同样多。
2、通过分一分活动,培养动手操作能力和概括能力。评价设计
1、出示准备春游食品的情境图。以小精灵聪聪的身份说二(1)班明天要去参观科技园。小朋友正忙着准备春游食品呢!我们来看一看,他们都准备了哪些食品。
2、让学生观察画面,并请学生说一说了解到的情况。
1、教学例1,引入“平均分”。
我们来帮助二(1)班小朋友准备春游食品好吗?我们先来分糖。
(1)学生用6个小○表示,尝试分一分。
(2)说说你是怎样分的?
(3)汇总分的结果后告诉学生:每份分得同样多,叫平均分。
(4)让学生再次分一分,这次要求把6个糖平均分。
2、巩固“平均分”。
(1)出示教科书第8页“做一做”第1题。
学生看清题意。特别请学生说一说“平均分是什么意思?”
(2)出示教科书第8页“做一做”第2题。
一共有()片枫叶,每()片一份,平均分成了()份。
让学生用12张正方形卡片代替枫叶,摆一摆。摆好后,按要求填空。
3、教学例2,尝试平均分物品。
(1)按教科书第9页例2提出:把18个橘子平均分成6份。
(2)请各组用实物图卡片(或○卡片)分一分。
(3)交流。请学生说一说,怎样分的,分的结果。
(4)教师归纳平均分的方法:把15个橘子平均分成5份,可以每次每份分一个或几个。最后,要使每份分得同样多。
4、独立进行平均分。
(1)出示教科书第9页“做一做”。让学生用小棒代替酸奶,独立完成把10盒酸奶平均分成2份的任务。
(2)交流。请学生说一说,怎样分的。
1、练习二的第1题。
(1)回忆:什么中平均分?
(2)判断:哪是平均分,并说出自己的想法。
2、练习二的第2题。
动手在线上画圆,然后填空。
3、练习二的第3题。
(1)让学生根据题意准备学具卡片。请学生说一说,准备了几个“风车”。
(2)让学生独立完成把风车平均分成3份的任务。
(3)交流。请学生说一说分的过程和结果。
1、请学生回忆:这节课学习了什么知识?
2、教师总结:这节课我们知道了什么叫平均分,还学会把一些东西平均分成几份。要把一些东西平均分成几份,可以每次每份放一个,也可以每次每份放两个……最后,每份分得同样多。
平均分
每份分得同样多
二年级平均分教学设计 平均分的教案设计篇三
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二年级平均分教学设计 平均分的教案设计篇四
:
1、让学生在丰富的实践活动中建立起“平均分”的概念。
2、通过操作、交流,自主探索解决问题的办法,体验解决问题策略多样化。
3、初步感受“平均分”在生活中的作用,培养学生解决问题的能力和应用意识。
:
人教版第四册数学课本第15页的例3及练习三的4—6题
:
课件、学具盒。
教学过程说明
1、师谈话:同学们,你们喜欢春游吗?喜欢去哪里春游?(学生畅所欲言)
2、出示课件:春游租船问题的情境图(不显示解决问题的办法)(配音:噢!春游啦!)
师:瞧!图中的小朋友也去春游啦!请小朋友仔细观察画面,你获得什么信息?(师可提示:我们看看图中的小朋友们去哪儿春游?碰到什么问题?)
3、学生观察画面,交流信息
课伊始,用学生喜欢的春游活动引入,引导学生畅所欲言,交流各自所喜欢去春游的地方,为学生创设良好的学习情境,激发了学生学习的愿望。
引导学生学会收集信息,培养学生良好的学习习惯,体现课改新理念。
1、学习例3(课件显示:春游的场面)
重点突出(租船处有24人租船,每条船限乘4人)。
2、分组探讨解决“租几条船?”
师:你能应用你收集到的信息帮他们解决租船问题吗?你有什么办法?
四人小组讨论,后交流本组解决问题的方法和结果。(让学生畅所欲言,充分交流)
师:你还有什么办法?
追问:“你是怎么想的?除法我们还没学?”
在这里充分体现教师主导、学生主体作用,学生始终积极、主动参与学习过程,在自主探索、合作交流的过程中解决租船问题。具体感知“每4个人一组租一条船,24人分成这样的6组,就要租6条船。”让学生在交流中,欣赏同学解决问题的办法,体验成功。进一步理解平均分的方法,感知“平均分”在生活中的应用,使学生感受到生活中的数学,数学在生活中的作用。
你真是太棒了,你学会了预习,并应用,老师真佩服你。
3、师小结:这个问题实际上是求24里面有几个4?24里面有6个4,就需要6条船。
师:小朋友,你们喜欢小动物吗?他们有事儿要请我们帮忙,你们愿意吗?
1、第15页的做一做
(呈现一幅小动物准备就餐的生动有趣的情境图。)师:图中的小动物在做什么?
师:小熊在思考什么问题?
师:“你帮小熊分分看。”
请小朋友帮小熊分筷子,学生用小棒代替筷子,动手分一分。引导学生思考:“有几个小动物就餐”“一双筷子是几根”,并说说怎么分的。
2、练习三的第4—6题
第4题(课件出示分萝卜的情境图。)
及时抓住学生学习的闪光点,赏识学生,让学生获得高峰体验。
设计帮小动物分食品的故事情境,吸引学生的学习兴趣,自然渗透爱护动物的教育。
练习时,先让学生观察画面,
师:仔细观察画面,你可获得什么信息和问题?
学生独立完成,后交流分的过程和结果。
第5题
师:你们知道小猴子爱吃什么?(香蕉)
师:请小朋友帮忙分香蕉,要做到公平。
把18个香蕉平均分给6只小猴,每只小猴分()个。
把18个香蕉平均分给9只小猴,每只小猴分()个。
学生借助学具动手分一分,并边说分的过程、方法。
开放题
1、学生独立操作
用15个方木块(1)摆5个一样的长方体,每个长方体用()个木块。
(2)每个长方体用3个木块,可以摆()个长方体。
思考:这两题有什么相同和不同的地方?
引导学生学会自己收集解决问题所需要的信息、独立解决问题,加深对平均分的认识,又培养学生应用知识的能力。
提供具有思考性的问题情境,如:这两道题有什么不同?引导学生观察、比较,以突出平均分的实质是“每份同样多”,加深对“平均分方法的了解。
2、师:你能在生活中找出用平均分的例子,在小组里交流分享。
师:谁能说一说今天这节课你有哪些收获?
师:今天我们用我们上节课学到的平均分的方法解决了一些生活中的问题。生活中还有许多地方会用到数学知识,只要我们善于观察、勤于思考,我相信,我们都能很好的解决。
利用开放题,提供给学生广阔、自由的学习空间,鼓励学生放开思维,大胆思维,大胆探究,不断鼓励学生尽量说出与别人不同的例子,训练学生的求异思维,发散思维。
根据低年级学生的年龄特点,在本课的教学中,我把春游情境、分筷子、分萝卜、分香蕉的问题编成小朋友喜欢的故事,唤起学生的学习欲望,让学生积极主动地参与学习,课堂气氛活跃,整堂课学生都能始终保持浓厚的学习热情。
新课标要求教师要帮助学生在自主探索和合作交流的过程中理解数学、掌握数学。遵循学生主体,教师主导教学理念,本课的开始我引导学生自己发现租船问题,先让学生小组探讨如何租船的方法,然后分享交流,在合作交流的基础上获得多种解决问题的办法,体现策略多样化。
二年级平均分教学设计 平均分的教案设计篇五
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