2022年10000以内数的读写及大小比较教案 .pdf

学习必备欢迎下载10000 以内数的读写及大小比较教案教材版本人教版学段小学二年级学科数学章节下册第五单元课题名10000 以内数的读写及大小比较课时第四课时执教教师单位南城县第一小学教师姓名罗鑫云教学目标1、学会读写万以内的数（中间、末尾有 0），能总结出读写万以内数的方法。2、掌握万以内数的大小比较的方法，能够用正确的符号表示万以内数的大小。3、培养学生的逻辑思维的能力，增强学习数学的自信心，逐步发展学生的数感。教学重点学会读写万以内的数（末尾、中间有），比较数的大小教学难点读写万以内的数（末尾、中间有）教具课件、计数器等时间安排课后学习必备欢迎下载小结备注教 案 内 容（根据上面要求在下面编写教案内容）10000 以内数的读写及大小比较一、复习旧知，激活基础1.出示计数器，填空。在数位顺序表里面，从右边起，第一位是（），第二位是（），第三位是（），第四位是（），第五位是（）。2.读数，并说说数的组成。368 409 500 3.写数。四百五十写作：_ 三百零六写作：_ 二、揭示课题师：同学们已经学习了“1000 以内数学的读写及大小比较，今天我们一起来学习 10000 以内数的读写及大小比较。（板书课题）三、探究新知1.借助计数器，读数，写数。（1）师拨 4305 师：这个数你能读吗？同桌之间读一读。文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10学习必备欢迎下载师指名三位学生读数，再全班一起读。师：这个数怎么写呢？生：千位上有 4 颗珠子就在千位上写4，百位上有 3 颗珠子就在百位上写 3，十位上没有珠子就在十位上写0，个位上有 5 颗珠子就在个位上写 5.师根据学生的汇报板书：写作：4305 再让学生读一读，师板书：读作：四千三百零五（2）师拨 3003 师：这个数是几位数，最高位是什么位？谁能说出这个数的组成？怎样写？怎样读？（3）小结万以内数的读写法。2.反馈练习课本第 76 页做一做第 1 题。3探究例 7 万以内数的大小比较（1）比一比。99 100 360 630 570 540 想一想：千以内数的大小比较的方法。（2）比大小游戏师：我们学习了 1000 以内数的大小比较，现在我们来学习 10000以内数的大小比较，我们来做个游戏好吗？全班分成红、蓝两队，生听游戏规则进行游戏。游戏一：红、蓝两队各选一名代表上台抽出一个数，然后放在方格里，看哪队组成的数大，哪队就赢，反之就输。红队：98 蓝队：023 游戏二：红、蓝两队每人抽4 次，分别把数字放到个位、十位、百位、千位上。比一比，谁得到的数大。游戏三：红、蓝两队把抽到的数字分别放到千位、百位、十位、个位上，比一比，谁得到的数大。四、巩固练习（闯关游戏）第一关：逛商场，读商品价格，比大小。第二关：在里填上”或”“。文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10学习必备欢迎下载1430 9803864 3529 5568 44792560 2569 第三关：用 2、5、0、0 组数。两个 0 都不读：_ 只读一个 0:_ 按从大到小的顺序排一排：（）（）（）（）（）（）五、课堂小结这节课学得开心吗？你有什么收获？文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 ZZ4X2D8U1F10文档编码:CJ9N7J3I7Q6 HR2X6L1D7V2 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