三年级数学上册第9单元《数学广角集合》教学设计新人教版.doc

上传人:赵齐羽 文档编号:1123586 上传时间:2019-05-05 格式:DOC 页数:2 大小:1.04MB
下载 相关 举报
三年级数学上册第9单元《数学广角集合》教学设计新人教版.doc_第1页
第1页 / 共2页
三年级数学上册第9单元《数学广角集合》教学设计新人教版.doc_第2页
第2页 / 共2页
亲,该文档总共2页,全部预览完了,如果喜欢就下载吧!
资源描述

1、1数学广角集合【教学目标】1.理解集合圈里各部分的意义。2.会读集合圈中的信息,会按条件填写集合圈。3.使学生会借助直观图,利用集合的思想方法解决简单的实际问题。【教学重难点】1.会读集合圈中的信息,会按条件填写集合圈。2.使学生会借助直观图,利用集合的思想方法解决简单的实际问题。【教具准备】PPT 课件【教学过程】1、“脑筋急转弯”游戏引入问题1、两个爸爸带着两个儿子去博物馆参观,他们只买了三张票就进去了,为什么?(强调爸爸身份的双重性身份“重复”了)2、从前数,我排第三,从后数,我排第四,请问共有多少人排队?(我“重复”了,画图更直观的示意出来)2、新授例题:下表是三(1)班参加跳绳、踢毽

2、比赛的学生名单跳绳 杨明 陈东 刘红 李芳 王爱华 马超 丁旭 赵军 徐强踢毽 刘红 于丽 周晓 杨明 朱小东 李芳 陶伟 卢强参加这两项比赛的共有多少人?引导学生观察名单,发现“重复”人名,再提出集合图表表示法。跳绳组 踢毽组跳绳组 踢毽组两项都参加的引导两种列算式求总数的方法:法一: 6 + 3 + 5 14(人)法二: 8 + 9 3 14(人)三、做一做 1、教材 P105 12、统计人数:(模仿例题进行统计并回答问题)(1)喜欢足班和篮球的分别有多少人?(2)统计表中一共有多少人?3、思考题(难度提升题,此题根据时间可选讲或留课后作业)三年级(1)班的部分同学参加“运动会”,其中参加跳绳比赛的有 22 人,参加跑步比赛的有 28 人,两项都参加的有 10 人,共有多少人参加比赛?2

展开阅读全文
相关资源
猜你喜欢
  • ETSI TR 102 430-2005 Speech Processing Transmission and Quality Aspects (STQ) Basic Issues concerning the Quality of Speech over Packet Technology (both Internet and Next Generatio.pdf ETSI TR 102 430-2005 Speech Processing Transmission and Quality Aspects (STQ) Basic Issues concerning the Quality of Speech over Packet Technology (both Internet and Next Generatio.pdf
  • ETSI TR 102 430-2005 Speech Processing Transmission and Quality Aspects (STQ) Basic Issues concerning the Quality of Speech over Packet Technology (both Internet and Next Generatio_1.pdf ETSI TR 102 430-2005 Speech Processing Transmission and Quality Aspects (STQ) Basic Issues concerning the Quality of Speech over Packet Technology (both Internet and Next Generatio_1.pdf
  • ETSI TR 102 433-2005 Electromagnetic compatibility and Radio spectrum Matters (ERM) Digital Private Mobile Radio (DPMR) using a channel spacing of 6 25 kHz and operating in the fre.pdf ETSI TR 102 433-2005 Electromagnetic compatibility and Radio spectrum Matters (ERM) Digital Private Mobile Radio (DPMR) using a channel spacing of 6 25 kHz and operating in the fre.pdf
  • ETSI TR 102 433-2005 Electromagnetic compatibility and Radio spectrum Matters (ERM) Digital Private Mobile Radio (DPMR) using a channel spacing of 6 25 kHz and operating in the frer g.pdf ETSI TR 102 433-2005 Electromagnetic compatibility and Radio spectrum Matters (ERM) Digital Private Mobile Radio (DPMR) using a channel spacing of 6 25 kHz and operating in the frer g.pdf
  • ETSI TR 102 433-2007 Electromagnetic compatibility and Radio spectrum Matters (ERM) Digital Private Mobile Radio (DPMR) using a channel spacing of 6 25 kHz and operating in specifi.pdf ETSI TR 102 433-2007 Electromagnetic compatibility and Radio spectrum Matters (ERM) Digital Private Mobile Radio (DPMR) using a channel spacing of 6 25 kHz and operating in specifi.pdf
  • ETSI TR 102 433-2007 Electromagnetic compatibility and Radio spectrum Matters (ERM) Digital Private Mobile Radio (DPMR) using a channel spacing of 6 25 kHz and operating in specifiion.pdf ETSI TR 102 433-2007 Electromagnetic compatibility and Radio spectrum Matters (ERM) Digital Private Mobile Radio (DPMR) using a channel spacing of 6 25 kHz and operating in specifiion.pdf
  • ETSI TR 102 434-2005 Electromagnetic compatibility and Radio spectrum Matters (ERM) Short Range Devices (SRD) Alternative Interference Mitigation Technologies to Listen Before Talk.pdf ETSI TR 102 434-2005 Electromagnetic compatibility and Radio spectrum Matters (ERM) Short Range Devices (SRD) Alternative Interference Mitigation Technologies to Listen Before Talk.pdf
  • ETSI TR 102 434-2005 Electromagnetic compatibility and Radio spectrum Matters (ERM) Short Range Devices (SRD) Alternative Interference Mitigation Technologies to Listen Before Talkla.pdf ETSI TR 102 434-2005 Electromagnetic compatibility and Radio spectrum Matters (ERM) Short Range Devices (SRD) Alternative Interference Mitigation Technologies to Listen Before Talkla.pdf
  • ETSI TR 102 436-2014 Electromagnetic compatibility and Radio spectrum Matters (ERM) Short Range Devices (SRD) intended for operation in the bands 865 MHz to 868 MHz and 915 MHz to .pdf ETSI TR 102 436-2014 Electromagnetic compatibility and Radio spectrum Matters (ERM) Short Range Devices (SRD) intended for operation in the bands 865 MHz to 868 MHz and 915 MHz to .pdf
  • 相关搜索

    当前位置:首页 > 考试资料 > 中学考试

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1