《笔算乘法（一个因数中间有零的）》的教学研讨.doc

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1、笔算乘法（一个因数中间有零的）的教学研讨课 题：笔算乘法（一个因数中间有零的）教学内容：教材第8384页的内容及练习十九的第14题。教学目标：1、知道“0”和任何数学相乘都得“0”，进一步理解乘法的意义。2、培养学生的迁移、类推能力，提高学生的计算能力。3、体验迁移、类推的思想方法，激发兴趣，培养积极动脑的好习惯。教学重点：0和任何数相乘都得0教学难点：0的乘法与0的加法进行比较。执 教：陈雪花学习过程：一、故事引入：一天王母娘娘叫七仙女到蟠桃园去摘仙桃为自己祝寿。七仙女来到蟠桃园，见树上一个仙桃也没有了，孙悟空正坐在树上吃桃子。问：一共摘了多少个仙桃？二、教学例51、教师提问：想一想：怎么列

2、式计算？2、板书：0+0+0+0+0+0+0=007=0 70=03、进一步思考：01 02 03 4、你发现了什么？（结论：0和任何数相乘都得0.）5、想一想练习：03=（ ） 09=（ ） 00=（ ）“做一做”P83直接写在书上。进行0的乘法与0的加法比较。三、教学例6。1、老寿星看看没有寿桃吃了，他就去进行每天的锻炼散步了。看书84页小精灵问：你能算出老寿星每天步行多少来吗？怎么列式？2、你能先估算积大约是多少吗？3、请生尝试计算后汇报。算法一：5003=1500 算法二： 5 0 883=24 31500+24=1524 1 5 2 4师问：因数十位上的0应该怎么乘？五、巩固发展待添

3、加的隐藏文字内容21、P84“做一做”2、很快说出下面两个算式哪个得数大。（1）5+6+7+8+9+0=（2）567890=六、小结：这节课你学会了什么？有什么收获？板书设计： 笔算乘法（一个因数中间有零的）0+0+0+0+0+0+0=0 5 0 807=0 70=0 2 301 1 5 2 402030和任何数相乘都得029C91AFE4CED1B6C8795AD9C91AFE4CED1B6C8795AD91AFE4CED1B6C8795AD9C91FE4CED1B6C8795AD29C91AFEDD1B6C87D1B6C8795AD9C91AFE4CED1B6C8795AD91AFE4CE

4、D1B6C8795AD9C91FE4CED1B6C8795AD29C91AF95AD9C91AFE4CED1B6C8795AD91AFE4CED1B6C8795AD9D1B6C8795AD9C91AFE4CED1B6C8795A1AFE4CED1B6C8795AD91AFE4CED1B6C8795AD9C91FE4CED1B6C8795AD29C91AFC91FE4CED1D1B6C8795AD9C91AFE4CED1B6C8795AD91AFE4CED1B6CD1B6C8795AD9C91AFE4CED1B6C8795AD91AFE4CED1B6C8795AD9C91FE4CED1B6C87

5、95AD29C91AF8795AD9C91FE4CED1D1B6C8795AD9C91AFE4CED1B6C8795AD91AFE4CED1B6C87D1B6C8795AD9C91AFE4CED1B6C8795AD91AFE4CED1B6C8795AD9C91FE4CED1B6C8795AD29C91AF5D1B6C8795AD9C91AFE4CED1B6C8795AD91AFE4CED1B6C8795AD9C91FE4CED1B6C8795AD29C91AFAD9C91FE4CED1B6C8795AD29C91AFB6C8795AD29C91AFB6C8795AD29C91AFD1B6C87

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