启东教育人教版九年义务教育小学数学教科书

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1、carried out practice line pioneer standard, and post spurs members concentrated service months, activities, education guide members always everywhere bearing in mind identity, based job post, active play role. To develop differentiated learning education guide party members in accordance with their

2、own situation, target the problems to, based on the work done. Pay attention to the room and room for grass-roots party organizations, grass-roots party organizations have more autonomy in education, making education more ground, full of vitality, good effect. Finally, highlight the normal long-term

3、. To highlight the characteristics of recurrent education, with long flowing, continuous line of perseverance the perseverance to promote educational efforts to realize the partys ideological and political construction of routine institutionalization. With the party branch as the base unit. Play the

4、 role of party branches should be, is the key to educational success. Each branch must take strict education and management responsibility of party members, education based on learning to make specific arrangements, fully mobilize the enthusiasm of party members involved in the education, ensure the

5、 Organization in place, measures in place, put in place. To the party organization as the basic form. In the standardized development of learning, make learning more effective efforts, and will adhere to the good party group, organized party, party members and the General Assembly, tell a good party

6、 lectures, can drive a good topic about, prevent showy without substance, Sham mules. To implement the education management system for basic support. Democratic mutual evaluation on party members in accordance with the regulations, the real performance criteria and order established, sound carefully

7、 dispose of unqualified party members, to further improve the dredge export team, pure self cleaning mechanism. Party leading cadres should adhere to and implement the central group learning system, to which branch of learning exchanges, participation in a dual organization with comrades. Focus on r

8、ecurrent education, you also need to continue to strengthen the building of grass-roots party organizations. Now, the city also has 88 village party organizations are weak and lax, first Secretary of the village, but conversion requires a process. Recently, the citys party organization focused inves

9、tigation, check out a total of lost members 4,507, Pocket members 1037, find there are 640 lost party members are not contacted 148 Pocket party members and implementation of organizational relationships. Educational management of party members into the Organization, there is a lot of work to do. We

10、ak and lax party continued reorganization as an important task, finish perfect organization, with a good team, Good system. Special highlights of grass-roots party organizations, to be dealt with first in place, further education, reorganization, transformation and educational interaction. In short,

11、 through solid and effective work initiatives人教版九年义务教育小学数学教科书数 学第 九 册 教 案 授课教师 二00六年八月二十九日一、小数的乘法和除法教学内容:教材P1P38。教学要求:1、使学生理解小数乘、除法的意义,掌握计算法则,能够比较熟练地进行小数乘、除法笔算和简单的口算。2、使学生会用“四舍五人法”截取积、商是小数的近似值。3、使学生理解整数乘法运算定律对于小数同样适用,并会运用这些定律进行一些小数的简便计算。教学重点:、使学生掌握乘、除法的计算法则。、能正确地进行小数乘、除法的笔算和简单的口算,提高学生的计算能力,培养学生良好的学习

12、习惯。 、能正确应用“四舍五入法”截取积、商是小数的近似值,并能解决有关的实际问题。、会应用所学的运算定律及其性质进行一些小数的简便计算。教学难点:1、在理解小数乘、除法的算理和算法的基础上,掌握确定小数乘法中积的小数点位置和小数除法中商的小数点位置的方法。2、会把除数是小数的除法转化成除数是整数的除法,并能正确的进行计算。课时安排(223课时)1、小数乘法9课时2、小数除法11课时3、整理和复习2课时4、检测反馈3课时1.小数乘法 小数乘整数 教学内容:P1的例1以及练习一的第14题。教学目标:1知识教学点:使学生理解小数乘整数的意义。掌握小数乘整数的计算方法。2能力训练点: 能比较正确地进

13、行计算小数乘整数。培养学生的迁移类推能力。3德育渗透点:引导学生探索知识间的联系,渗透转化思想。教学重点:小数乘以整数的意义。教学难点:确定小数乘以整数的积的小数点位置的方法。教学过程: 一、复习辅垫1.读题列式,并说一说各算式所表示的意义4个13是多少?18个20是多少?(概括:整数乘法表示求几个相同加数的和的简便运算。)2出示表格:填得数后,引导学生观察:(1) 先从左往右观察因数、积的变化规律;(2) 再从右往左观察因数、积的变化规律。提问:通过刚才的计算和比较,你发现了什么规律?(用一句话表示)引导学生得出结论。一个因数不变,另一个因数扩大(或缩小)10倍、100倍、1000倍积也扩大

14、(或缩小)10倍、100倍、1000倍3、引新:上学期我们学习了整数乘法的意义和积的变化规律,小数乘法是不是也有这样的规律呢?想通过自己的努力掌握这部分知识吗?今天我们就来研究有关小数乘法的知识,首先小数乘以整数。(板书课题:小数乘以整数)二、指导探索1出示例1、花布每米13.5元,买5米要用多少元?2组织讨论:(1)用加法怎样列式?用乘法怎样列式?(2)13.55表示的意义是什么?(3)你觉得哪个算式比较简便?(4)小数乘以整数的意义与整数乘法的意义有什么联系?3提问:小数乘以整数该怎样计算呢?(如果学生有困难,教师可提示:能不能把小数乘法转化成整数乘法呢?能不能用前面复习中得到的规律来解决

15、呢?)组织学生小组合作学习:互相交流做法,交流这样做的依据。 4指导学生看书,讲解解题思路。提示:为什么要把675缩小10倍呢?5请学生看书学习今天的内容第1页,觉得重要的地方画下来。三、质疑小结1.今天我们都学会了哪些知识?请同学概括一下。(培养学生概括能力和语言表达能力)2.提问:计算13.55时先算1355,为什么算出的结果325还要缩小10倍呢?3.你对今天学习的内容还有什么问题?(教师和学生共同答疑)四、反馈调节1完成P.4第1题注意学生叙述意义时的不同说法 2完成P.1“做一做”。集体订正。3完成第4页第2题。集体订正。提问:观察上面的习题积的小数位数与被乘数的小数位数有什么关系?4P.4第4题:由学生独立完成后集体订正。5根据14923=3427填结果。14.923() 1.4923() 1490.23() 1492.3() ()()=3.4276、总结出计算方法:小数乘整数,先执照整数乘法法则算出积,再看乘数有几位小数,就从积的右边起数出几位点上小数点。

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