(完整word版)8的乘法口诀教案.pdf

1 8 的乘法口诀教学内容：九年义务教育课程标准实验教科书数学二年级上册75 页例题 2。教学目标：1、借助已有的知识和经验编制8 的乘法口诀，理解每句口诀的含义，初步记住 8 的乘法口诀，能运用 8 的乘法口诀进行有关乘法计算，并解决一些简单的问题。2、通过经历编制乘法口诀的过程，培养学生的推理、概括知识和自主学习的能力，并获得成功的体验。教学重难点：知道每一句口诀所表示的含义。教学过程：一、复习。1、算一算，说一说你是运用的哪句口诀（出示课件）77 76 75 74 73 72 47 27 2、出示课题，齐读课题。师：小朋友们可真聪明！我们今天一起来学习8 的乘法口诀。二、创设情境，引入新课1.学习 8 的乘法口诀师：今天我给大家带来了一只小动物小狗，请大家仔细地观察它是怎样跳的呀？咱们一起观察一下。师：请你观察小狗第一次从0 跳到几？精品资料-欢迎下载-欢迎下载 名师归纳-第 1 页，共 5 页 -2 生：小猴第一次从0 跳到 8 小狗第一次从 0 跳到几？第二次跳到 16，因为 8+8=16，（有几个 8？）2 个 8 师：第三次呢？生：第三次跳到 24 如果小狗按这规律继续跳下去，你会填出来吗?(填书)（填完齐读 1 个 8 是 8,2 个 8 是 16,3个 8 是 24.）2、试编。师：根据小狗连跳的情况，你能编几句口诀吗？先想想并把你的口诀写在书本上。3、汇报。（指名汇报，教师板书）全班交流编写的乘法口诀。（教师板书八句8 的乘法口诀）两道乘法算式。（板书）师：你编了几句口诀？请你说一说。教师根据学生的回答板书：4、检验。师：小朋友们口诀编得非常好！让我们大声地把自己编的乘法口诀读一遍吧！（学生读）5、寻找口诀规律。1、请你仔细观察8 的乘法口诀你发现什么呢?(四人小组讨论)精品资料-欢迎下载-欢迎下载 名师归纳-第 2 页，共 5 页 -文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F93 2、汇报：发现一些规律了吗？（1、每句口诀的前一个字依次是“一、二、三、四、五、六、七、八”；2、每句口诀的第二个字都是“八”；得数依次多了 8。3、8 的乘法口诀有 8 句。4 相邻的口诀相差 8）6、交流、记忆。（1）、自由背口决。师：刚才，通过大家的共同努力，我们编写了口诀，并理解了每句口诀所表示的意思，相信咱们一定能很快记住这八句口诀了！好，现在，请大家读一读、记一记8 的乘法口诀。看谁最先记住。（学生读口诀记忆）师：谁来试一试？抽学生背。（2）、齐背口诀。（男、女背）（3）、师生、生生对口令：现在，我们来做一个对口令的游戏。老师说口诀的前半句，你们说后半句。男女生对口令：男生问，女生答；女生问，男生答。（不按顺序）生生对口令。谁愿当小老师和同学们对口令？（4）、教师说算式，学生背口诀。过渡：同学们可真棒！不但自己编出了8 的乘法口诀，还能用这么快的速度把口诀记住，老师真佩服你们！老师非常想奖励大家，不过今天带来的不是红花，而是一首儿歌。看谁来到了我们的课堂上？是螃蟹，它最主要的特点是什么？（8 条腿）精品资料-欢迎下载-欢迎下载 名师归纳-第 3 页，共 5 页 -文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F94 电脑出示：1 只螃蟹（8）条腿。2 只螃蟹（）条腿。3 只螃蟹（）条腿。4 只螃蟹（）条腿。5 只螃蟹（）条腿。6 只螃蟹（）条腿。7 只螃蟹（）条腿。8 只螃蟹（）条腿。全班拍手念儿歌。四、巩固练习。师：我们学习 8 的乘法口诀有什么作用呢？（进行计算，解决生活中的问题。）1、计算。（口算卡片出示：课本75 页第 2 题）83=48=86=78=58=82=38=88=2、把口诀补充完整。（课件出示）三八（）七八（）（）八四十（）八三十二八八（）（）八十六3、列式计算（课件出示）4、解决问题（课件出示）5、开火车（课件出示计算题）精品资料-欢迎下载-欢迎下载 名师归纳-第 4 页，共 5 页 -文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F95 四、用儿歌课堂总结。1、这节课你学到了什么？是怎样学到的？学得高兴吗？2、齐读口诀儿歌。精品资料-欢迎下载-欢迎下载 名师归纳-第 5 页，共 5 页 -文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 ZG9K4E1A1F9文档编码:CX7V2W2U2I5 HV7C10F6C6F9 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