单项式与单项式相乘说课稿.pdf

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1、“单项式与单项式相乘”说课稿朱家沟学校田强今天非常荣幸和大家坐在一起，共同探讨新课程理念下的初中数学教学。我今天所说的课题是：一、单项式与单项式相乘二、教材分析1、教材的结构与内容简析单项式与单项式相乘，综合用到了有理数的乘法、乘法交换律和结合律，幂的运算性质。是学生在利用以上运算的知识的结合和具体运用，而以后学习单项式乘以多项式，多项式乘以多项式，都要使用到单项式乘以单项式的乘法，同时也是后面学习单项式除以单项式的基础。因此，单项式乘以单项式在本章中起着承上启下的作用，占据着重要的地位。2、思想方法分析本节在教学中力求向学生传授类比、转化和“特殊一般特殊”的数学思想，主动探索解决问题途径的意

2、识和方法。三、学生情况分析1、学生已掌握的知识：有理数的乘法、交换律、乘法结合律及幂的运算法则；2、初中学生的认知水平知识：初中学生能较好的模仿他们直接感知的东西，又具有一定的独立性，在认知能力的发展上，处于从具体形象思维向抽象逻辑思维过渡的阶段，具体形象思维仍起着重要作用。四、教学目标1、知识与技能目标让学生通过适当的尝试，获得直接的经验，体验单项式与单项式乘法运算规律，总结运算法则。使学生通过探索，理解单项式乘法中系数与指数的不同计算方法，正确运用单项式乘法法则进行计算。2、德育目标：通过教学中师生互动，启发学生合作的优越性，运用旧知识探究新知识，激发学生的学习兴趣和求知欲。五、教学重点、

3、难点、关键重点：对单项式运算法则的理解和应用难点：尝试与探索单项式与单项式的乘法运算规律关键：正确认识单项式与单项式的系数，相同字母和不同字母在乘积中处理方法。六、教学过程（一）情境引入回顾有理数与整式的有关要概念，同底数幂相乘、幂的乘方和积的乘方等公示。提出问题：如何计算4a2x5?(-3a3bx2)？由此你能总结单项式乘法的法则吗？由问题的引入，把学生带入一个思考探索，力求解决此问题的一文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I

4、8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1

5、E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:C

6、K2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW

7、3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9

8、S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码

9、:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4

10、HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9个境界中去，对要解决的问题产生强烈的突破意识，让学生去猜想、探索。问题练习：1，做一做235234bxaxa（目的是回顾乘法运算律与幂的运算，为本节课所要学习的新知识做一个铺垫）2、试一试（探索）3x4 6x 2x2y3（-3xy3z）（让学生去摸索去研究，去总结，通过与做一做进行类比从而转化而得到新知识）总结单项式乘单项式的法则（二）例题演练例 1：解题思路：一，先通过分析，与试一试进行比较；二，抽学生口述本题的解题过程，目的在于让学生进行回顾并熟让单项式乘以单项

11、式的法则；三，抽学生完成解题过程，学生自查，目的在于让学生他们自己查问题，找出漏洞。（三）能力训练文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:

12、CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 H

13、W3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP

14、9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编

15、码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4

16、 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7

17、ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9（四）总结过程：1、学生回顾本节课所学的内容；2、抽学生回顾法则中需要特别注意哪些；3、老师总结本节课的内容；4、重视课本，并对题型进行拓展如补充练习，这样有利于打开

18、学生的思路和视线，达到举一反三的效果。（五）作业布置根据本节课大纲要求，特布置以下作业：文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8

19、F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D

20、1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E1

21、0X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2

22、H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I

23、8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9文档编码:CK2H8F7W2W4 HW3I8D1N8O7 ZP9S1E10X9D9