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1、10 的加减法教学设计教学目标1通过动手操作、小组合作学习,在实践活动中体验学习数学的乐趣,激发积极探索新知和学好数学的愿望。2正确计算 10 的加减法算式,加深认识相应的加减法算式之间的联系。3逐步培养数学思考的能力、解决简单实际问题的能力及合作交往能力等。教学流程一、复习铺垫。1各小组长组织本组同学同时进行“10 的组成”的接力赛。2师:()小组全体小朋友共同努力,赢得了本场比赛的第1“球”。二、自主探究。1通过“看看想想”,探讨 10 的加减法中一组算式的计算方法。师生交流:看,球场的一角,小朋友也在踢足球呢!仔细看一看,这些小朋友可以分成哪两部分?(学生可能会答:分成左边 3 个小朋友
2、和右边 7 个小朋友;可以分成穿黄衣服的6 个小朋友和穿蓝衣服的4个小朋友;还可以 把这些小朋友分成戴帽子和不戴帽子的)师生交流:小朋友观察得真仔细。在足球比赛中,一般是按服装颜色的不同分成两队。这样,你能说出哪些算式?(生:6410646=104)师:你们想自己算出得数吗?请把课本翻到第48 页,试着填一填。(生尝试做,师巡视。)师生交流:请任意选一题,把你的算法告诉大家。(生可能会有以下回答:(1)从图上数一数,共有10 个小朋友,所以6410;(2)因为 10 可以分成 6 和 4,所以 64=10;(3)因为 6410,所以46 也就等于 10。(4)因为 6410,所以 1064;(
3、5)因为1064,所以 104=6)师:小朋友的办法真多!可以利用10 的组成来算,也可以利用加减法算式之间的联系来算。这些算式就是今天要学习的10 的加减法的3 组题。10 的加减法还有很多题目,你们想自己学习吗?(板书:10的加减法)【教师一句不经意的问话,引出了学生对图意的不同理解,教师机智地把学生从不同角度观察的结果及时引到正题(球赛的常规知识),尔后教师又放手让学生说得到算式结果的多种途径,于是又“爆”出一些精彩的思考方法,可谓收放自如。】2通过“玩玩想想”,探索 10 的加减法全部算式的计算方法。(1)独立操作,写算式。教师让学生抛 10 个花片,根据正面和反面情况写出多组算式。(
4、2)学习小组交流算式、算法。(3)全班交流,展示成果。文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2
5、M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E
6、2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7
7、E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W
8、7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10
9、W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S1
10、0W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4教师让学生把写有算
11、式的纸片贴在黑板上,并根据学生汇报用电脑辅助演示抛的状况,从而逐步得到10 的加减法的全部算式。教师激励谈话:小朋友真行!你们通过抛花片,学会了所有10 的加减法题。想表扬一下自己吗?老师奖励每组一个最佳学习“球”。(4)学生上黑板归类并有序整理写有题组的纸片,即时记忆。【教师通过学生独立抛花片写算式,然后在交流汇报中得到全部算式。学生在自主探索的“做数学”活动中获得成功的喜悦。】三、巩固深化,拓展思维。110 加几。哪两张卡片上的数相加等于10?(1)师生同做。例如:师出“8”,生出“2”,接着师说“82=10”,生说“2810”。(2)同桌互做。210 减几。师:小兔子见小朋友这么聪明,要
12、来考考大家。小兔子手中的10 减去其他伞面上的任何数,请算出得数。3看谁说得多。=【“对口令”、“白兔出题考学生”以及开放题等丰富多样的练习形式,让学生在兴趣盎然中练习知识、发展思维,一点也不觉得苦和累。】四、全课小结,提高认识。(略)五、作业。1第 56页第 3 题。2学有余力的学生做提高题。文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P
13、3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10
14、P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS1
15、0P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS
16、10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 H
17、S10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1
18、HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1
19、 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4电脑出示图:一座小木屋前有2 个男孩,1 个女孩。问:如果一共有10 个小朋友,那么小木屋里可能有几个女孩?课后总结本节课在体现新课程理念中主要有以下几个特点:1注重创设问题情境,力求使课堂体现生活化、活动化、自主化、情感化和趣味化。2注重算法的多样化与思维的灵活性,教学中能尊重学生的自主选择,让学生在探索、体文档编码:CW3S10W7E2M1 HS10P3P7B2J8 Z
20、J9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8
21、ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8
22、 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J
23、8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2
24、J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B
25、2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4文档编码:CW3S10W7E2M1 HS10P3P7B2J8 ZJ9H8V10G2J4
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