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1、名师精编优秀教案哈尔滨市虹桥学校初一学年数学学科教案备课时间:20XX年月日设计者:刘庆云教者:授课时间20XX年月日课时数 1 课题一个数乘分数教学目标1、创设自主探索的学习情境,使学生在合作交流、尝试练习、归纳领悟等过程中,理解一个数乘分数的意义,掌握分数乘以分数的计算法则,学会分数乘分数的简便计算。2、培养学生的类推、归纳能力。3、通过一个数乘以分数应用的广泛性事例,对学生进行学习目的性教育,激发学生学习动机和兴趣。教学重点理解一个数乘分数的意义,掌握分数乘分数的计算方法。教学难点推导算理,总结法则如何突破重点难点通过组织学生进行迁移、类推、归纳、交流等数学活动教法合作探究展示内容复习展
2、示(展示1)1、计算下列各题并说出计算方法。1015851732、上面各题都是分数乘以整数,说一说分数乘以整数的意义。新课展示(展示2)1、例 1、班级活动小组粉刷墙壁,每小时粉刷一面墙51,41小时粉刷这面墙的几分之几?(5141)(1)引导学生动手操作,把一张纸张看作一面墙,第一步先涂出1 小时粉刷的面积,即这面墙的51,第二步再涂出41小时粉刷这面墙的面积,即51的41,由此得出5141这个乘法算式表示“51的41是多少?”(2)根据直观的操作结果,得出5141201,根据刚才操作的过程和结果推导出计算展示安排教者修订名师精编优秀教案方法:5141=4511201。(展示 3)(3)提出
3、问题:43小时粉刷多少呢?让学生用前面的方法涂色、推导、计算,自主解决问题。(展示 4)例 2、一根钢管长4 米,它的32是多少米?(展示 5)2、小结一个数乘分数的意义和计算方法。(1)意义:一个数乘分数,表示求这个数的几分之几是多少。(2)计算法则:分数乘分数,用分子乘分子,分母乘分母。(展示 6)三、练习:(1)计算 15157 685(2)列式计算。4 个65相加的和是多少?15 个103相加的和是多少?81的 10 倍是多少?127的 21 倍是多少?12 的32是多少?20 的53是多少?文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:C
4、L1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC
5、4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9
6、B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码
7、:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6
8、HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 Z
9、Z9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档
10、编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3名师精编优秀教案课堂反馈一、细心填写:1、6 表示的意义是()16表示的意义是()。表示的意义是()。2、一根绳子长米,3 根这样的绳子共长()米;这根绳子的长()米。3、米的是()米分=()秒平方米=()平方分米4、3 表示(),3表示()二、准确计算:1735125351118524185152281339142815453232 个米有多少米?8 千
11、克的是多少千克?吨的是多少吨?三、解决问题:1、一架飞机每小时飞行720 千米,小时飞行多少千米?文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:
12、CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 H
13、C4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ
14、9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编
15、码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6
16、 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8
17、ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3名师精编优秀教案2、一台割草机,每小时割草公顷,9 小时割草多少公顷?小时割草多少公顷?3、一个正方形的边长米,它的周长和面积分别是多少?4、一个平行四边形的底25
18、厘米,高是底的。它的面积是多少?5、一张纸的面积是平方米,它的有多少平方米?6、一辆汽车每小时行120 千米,从甲地到乙地行了小时,甲乙两地相距多少千米?从乙地到丙地行了40 分钟,乙丙两地相距多少千米?作业文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9
19、B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码
20、:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6
21、HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 Z
22、Z9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档
23、编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3文档编码:CL1E7G9L4N6 HC4G1X1P7V8 ZZ9B5N7E10B3
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