高中数学指数函数及其性质说课稿

高中数学指数函数及其性质说课稿 | 华文宇 | 2017-09-30 10:16:51 共有2个回复
  1. 1高一数学指数函数及其性质说课稿
  2. 2高一数学指数函数及其性质说课稿

高一数学指数函数及其性质说课稿2017-09-30 10:16:15 | #1楼回目录

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Day}{\xmlattrvalue 30}}{\xmlattr\xmlattrns0{\xmlattrname IsLunarDate}{\xmlattrvalue False}}{\xmlattr\xmlattrns0{\xmlattrname IsROCDate}{\xmlattrvalue False}}}\hich\af38\dbch\af13\loch\f38 2.1.2{\*\xmlclose}\u8220\'a1\'b0}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 指数函数及其性质}{\rtlch\fcs1 \af1\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \u8221\'a1\'b1}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 是在学生系统地学习了第一章中的函数概念}{\rtlch\fcs1 \af1\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 ,}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 掌握了前一节指数与指数幂的运算性质的基础上展开研究的。}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \b\f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 (二)指数函数的教学按照《教参》要求分两个课时完成}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 。

}{\rtlch\fcs1 \af1\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \hich\af38\dbch\af13\loch\f38}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 通过第一课时学习指数函数的定义,图像及性质,从而进一步深化学生对函\loch\af38\hich\af38\dbch\f13 数概念的理解与认识,使学生得到较系统的函数知识和研究函数的方法,并且为学习对数函数作好准备。}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 __\par }\pard \ltrpar\qj \li0\ri0\sl360\slmult1\nowidctlpar\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0\pararsid5129030 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 通过对教材的分析,我确定了本节课的教学目标和教学重、难点。}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \b\f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 (三)确定教学目标:}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \b\f38\fs24\cf1\insrsid7810583\charrsid5129030 __\par }\pard \ltrpar\ql \li0\ri0\sl360\slmult1\widctlpar\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0\pararsid5129030 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \hich\af38\dbch\af13\loch\f38 1 }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 使学生理解指数函数的定义,掌握指数函数的图象和性质,初步学会运用指数函数解决问题}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 __\par \hich\af38\dbch\af13\loch\f38 2 }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 引入、剖析、定义指数函数的过程,启动观察、分析、归纳、总结、抽象概括等思维活动,培养学生的思维能力,体会数学概念的学习方法;通过运用多媒体的教学手段,引领学生主动探索指数函数性质,体会学习数学规律的方法,体验成功的乐趣}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 __\par \hich\af38\dbch\af13\loch\f38 3 }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 通过本节课的学习,使学\loch\af38\hich\af38\dbch\f13 生获得研究函数的规律和方法;提高学生的学习能力;养成积极主动,勇于探索,不断创新的学习习惯和品质;树立学科学,爱科学,用科学的精神}{\rtlch\fcs1 \af1\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \hich\af38\dbch\af13\loch\f38 . __\par }\pard \ltrpar\qj \li0\ri0\sl360\slmult1\nowidctlpar\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0\pararsid5129030 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 我确定此目标基于以下几点:}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \u9312\'a2\'d9}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 教学大纲要求;}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \u9313\'a2\'da}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 教材编写意图;}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \u9314\'a2\'db}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 高一学生生理和心理上的接受能力;}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \u9315\'a2\'dc}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 爱国主义教育。}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \b\f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 (四)确定重难点:}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \b\f38\fs24\cf1\insrsid7810583\charrsid5129030 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 重点:指数函数的概念和性质}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 难点:用数形结合的方法从具体到一般地探索、概括指数函数的性质。

}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 __\par }\pard \ltrpar\ql \li0\ri0\sl360\slmult1\widctlpar\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0\pararsid5129030 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 我确定此重难点的原因有:指数函数是一个新概念学生比较陌生,学生对数学新内容的学习有相当的兴趣和积极性,但探究问题的能力以及合作交流等方面的发展不够均衡。}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 __\par }\pard \ltrpar\qj \li0\ri0\sl360\slmult1\nowidctlpar\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0\pararsid5129030 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \b\f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 三}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \b\f38\fs24\cf1\insrsid7810583\charrsid5129030 \hich\af38\dbch\af13\loch\f38}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \b\f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 教学方法}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \b\f38\fs24\cf1\insrsid7810583\charrsid5129030 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 (一)教材处理:由实例引入定义,再根据定义并利用描点法画出函数图象,通过图象得到函数的性质.学生在学习函数时,往往感到比较困难、抽象,不易理解和掌握.要让学生掌握学习函数的一般规律,再继续学习新的函数,学生就能顺理成章,而不会产生无所适从的感觉.}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 (二)教法选择:启发发现法、讨论法。本方法充分体现了教师为主导、学生为主体、训练为主线的}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \u8220\'a1\'b0}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 三为主}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \u8221\'a1\'b1}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 教学原则,充分调动学生的积极性,在教知识的同时,培养学生各方面的能力,并有利于既定目标的渗透。}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 (三)教具使用:投影仪或电脑。

在引导学生观察分析了三种典\loch\af38\hich\af38\dbch\f13 型函数的图象性质之后,将得到的结论直接投影出来,课上的引例、例题、练习题、作业题也都可投影出来.但要注意一定要体现过程教学.比如画函数图象,不要一下就把图象投影出来,这样不利于学生掌握图象的画法,既使用了投影仪或电脑,也要将建立坐标系(要强调三要素)、描点、用光滑曲线将这些点连接起来的整个过程展现出来.}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \b\f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 四}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \b\f38\fs24\cf1\insrsid7810583\charrsid5129030 \hich\af38\dbch\af13\loch\f38}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \b\f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 指导学法}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \b\f38\fs24\cf1\insrsid7810583\charrsid5129030 __\par }\pard \ltrpar\qj \fi480\li0\ri0\sl360\slmult1\nowidctlpar\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0\pararsid5129030 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 通过本节课的学习,培养学生学会以下一几点:善于思考,善于观察,善于动手,善于记忆的学习习惯;理论联系实际,学以致用;数形结合的数学思想方法。}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 __\par }\pard \ltrpar\qj \li0\ri0\sl360\slmult1\nowidctlpar\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0\pararsid5129030 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \b\f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 五}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \b\f38\fs24\cf1\insrsid7810583\charrsid5129030 \hich\af38\dbch\af13\loch\f38}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \b\f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 教学过程}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \b\f38\fs24\cf1\insrsid7810583\charrsid5129030 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 (一)总体设\loch\af38\hich\af38\dbch\f13 计:引入}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 \emdash }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 讲授新课}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 \emdash }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 课堂练习}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 \emdash }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 课时小结}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 \emdash }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 课后作业}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 (二)具体安排:}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 __\par }\pard \ltrpar\ql \li0\ri0\sl360\slmult1\widctlpar\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0\pararsid5129030 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \hich\af38\dbch\af13\loch\f38 1 }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 引入}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \hich\af38\dbch\af13\loch\f38 (3}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 分钟}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \hich\af38\dbch\af13\loch\f38 )__\par 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\loch\af38\hich\af38\dbch\f13 =}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\cf1\insrsid7810583\charrsid5129030 \~\hich\af38\dbch\af13\loch\f38\cell }\pard\plain \ltrpar\ql \li0\ri0\widctlpar\intbl\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin0 \rtlch\fcs1 \af0\afs24\alang1025 \ltrch\fcs0 \fs21\lang1033\langfe2052\kerning2\loch\af0\hich\af0\dbch\af13\cgrid\langnp1033\langfenp2052 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\fs24\cf1\insrsid7810583\charrsid5129030 \trowd \irow0\irowband0\ltrrow\ts11\trleft-45\trftsWidth1\trpaddfl3\trpaddft3\trpaddfb3\trpaddfr3\tblind-42\tblindtype3 \clvertalt\clbrdrt\brdrdb\brdrw2\brdrcf16 \clbrdrl\brdrdb\brdrw2\brdrcf16 \clbrdrb\brdrdb\brdrw2\brdrcf16 \clbrdrr\brdrtbl \cltxlrtb\clftsWidth3\clwWidth480\clshdrawnil \cellx435\clvertalt\clbrdrt\brdrdb\brdrw2\brdrcf16 \clbrdrl\brdrdb\brdrw2\brdrcf16 \clbrdrb\brdrdb\brdrw2\brdrcf16 \clbrdrr\brdrtbl \cltxlrtb\clftsWidth3\clwWidth3315\clshdrawnil \cellx3750\clvertalt\clbrdrt\brdrdb\brdrw2\brdrcf16 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\fs24\lang1033\langfe2052\loch\af13\hich\af13\dbch\af13\cgrid\langnp1033\langfenp2052 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 图}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\cf1\insrsid7810583\charrsid5129030 \hich\af38\dbch\af13\loch\f38}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 象}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\cf1\insrsid7810583\charrsid5129030 \cell }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\cf1\insrsid7810583\charrsid5129030 {\*\shppict{\pict{\*\picprop\shplid1028{\sp{\sn shapeType}{\sv 75}}{\sp{\sn fFlipH}{\sv 0}}{\sp{\sn fFlipV}{\sv 0}}{\sp{\sn dxTextLeft}{\sv 0}}{\sp{\sn dyTextTop}{\sv 0}}{\sp{\sn dxTextRight}{\sv 0}}{\sp{\sn dyTextBottom}{\sv 0}}{\sp{\sn fillBackColor}{\sv 0}}{\sp{\sn fFilled}{\sv 1}}{\sp{\sn fLine}{\sv 0}}{\sp{\sn fLayoutInCell}{\sv 1}}}\picscalex100\picscaley99\piccropl0\piccropr0\piccropt0\piccropb0\picw4166\pich4182\picwgoal2362\pichgoal2371\pngblip\bliptag1483977111{\*\blipuid 5873b19700000000b369524286000010}\bin516 塒NG________IHDR___瀇__焈____s____pHYs___蟔__賍_捘____gAMA__睅|鸔揰___cmPPJCmp0712____Om伐___嶪DATH琼粤m?__`o衉贓*yマ_ _?d撔[晸_╛忆郈 菾P_嬲陛_踢詩s 翣O锪_,"_泬 n猞縬Q肠煾x癬M児梌?赊(垒b錫q?鶓t郉 粡菂twG_Z??逩Q掙b蒻=瓘尀薩_6_P忶_?磘},嚒_唈_蔭(?飴?灝?,{vQ!瑹_玕\2_鈔褷tqK_鱩 Q_您}窜碰-篑kG?拑f碮溅拂_鮳瘩"_侓_耛o\玈_??_至﹛ _(簶_確`Ya轊峆Y欐i?Y輠?^x缳_b朹頮*刜耞?_a巔倫_4_癅?宊__X 蘝芲__,_f_c則1_?_紻A?茬溛攴_睑0,}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 且}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\cf1\insrsid7810583\charrsid5129030 \hich\af38\dbch\af13\loch\f38 a\u8800\'a1\'d91)}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 叫做指数函数。现在请大家回想以下指数函数的性质。

对上述性质,要求同学们必须熟练掌握应用,但不要求死记硬背.函数图象是研究函数的直观工具,利用图象便于记忆函数的性质和变化规律,掌握研究初等函数的基本方法和步骤有:(}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\cf1\insrsid7810583\charrsid5129030 \hich\af38\dbch\af13\loch\f38 1}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 )先给出函数的定义}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\cf1\insrsid7810583\charrsid5129030 \hich\af38\dbch\af13\loch\f38}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 (}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\cf1\insrsid7810583\charrsid5129030 \hich\af38\dbch\af13\loch\f38 2}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 )作出函数的图象}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\cf1\insrsid7810583\charrsid5129030 \hich\af38\dbch\af13\loch\f38}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \f38\cf1\insrsid7810583\charrsid5129030 \loch\af38\hich\af38\dbch\f13 (}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 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高一数学指数函数及其性质说课稿2017-09-30 10:16:31 | #2楼回目录

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\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 数学必修}{\rtlch\fcs1 \af1\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 1}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 》第}{\rtlch\fcs1 \af1\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 {\*\xmlopen\xmlns2{\factoidname PersonName}{\xmlattr\xmlattrns0{\xmlattrname Year}{\xmlattrvalue 1899}}{\xmlattr\xmlattrns0{\xmlattrname Month}{\xmlattrvalue 12}}{\xmlattr\xmlattrns0{\xmlattrname Day}{\xmlattrvalue 30}}{\xmlattr\xmlattrns0{\xmlattrname IsLunarDate}{\xmlattrvalue False}}{\xmlattr\xmlattrns0{\xmlattrname IsROCDate}{\xmlattrvalue False}}}\hich\af38\dbch\af38\loch\f38 2.1.2{\*\xmlclose}\u8220\'a1\'b0}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 指数函数及其性质}{\rtlch\fcs1 \af1\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \u8221\'a1\'b1}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 是在学生系统地学习了第一章中的函数概念}{\rtlch\fcs1 \af1\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 ,}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 掌握了前一节指数与指数幂的运算性质的基础上展开研究的。}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 (二)指数函数的教学按照《教参》要求分两个课时完成。

}{\rtlch\fcs1 \af1\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 通过第一课时学习指数函数的定义,图像及性质,从而进一步深化学生对函\loch\af38\hich\af38\dbch\f38 数概念的理解与认识,使学生得到较系统的函数知识和研究函数的方法,并且为学习对数函数作好准备。}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par }\pard \ltrpar\qj \li0\ri0\nowidctlpar\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0\pararsid7810583 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 通过对教材的分析,我确定了本节课的教学目标和教学重、难点。}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 (三)确定教学目标:}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par }\pard \ltrpar\ql \li0\ri0\widctlpar\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0\pararsid7810583 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 1 }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 使学生理解指数函数的定义,掌握指数函数的图象和性质,初步学会运用指数函数解决问题}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par \hich\af38\dbch\af38\loch\f38 2 }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 引入、剖析、定义指数函数的过程,启动观察、分析、归纳、总结、抽象概括等思维活动,培养学生的思维能力,体会数学概念的学习方法;通过运用多媒体的教学手段,引领学生主动探索指数函数性质,体会学习数学规律的方法,体验成功的乐趣}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par \hich\af38\dbch\af38\loch\f38 3 }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 通过本节课的学习,使学\loch\af38\hich\af38\dbch\f38 生获得研究函数的规律和方法;提高学生的学习能力;养成积极主动,勇于探索,不断创新的学习习惯和品质;树立学科学,爱科学,用科学的精神}{\rtlch\fcs1 \af1\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 . __\par }\pard \ltrpar\qj \li0\ri0\nowidctlpar\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0\pararsid7810583 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 我确定此目标基于以下几点:}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \u9312\'a2\'d9}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 教学大纲要求;}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \u9313\'a2\'da}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 教材编写意图;}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \u9314\'a2\'db}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 高一学生生理和心理上的接受能力;}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \u9315\'a2\'dc}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 爱国主义教育。}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 (四)确定重难点:}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 重点:指数函数的概念和性质}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 难点:用数形结合的方法从具体到一般地探索、概括指数函数的性质。

}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par }\pard \ltrpar\ql \li0\ri0\widctlpar\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0\pararsid7810583 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 我确定此重难点的原因有:指数函数是一个新概念学生比较陌生,学生对数学新内容的学习有相当的兴趣和积极性,但探究问题的能力以及合作交流等方面的发展不够均衡。}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par }\pard \ltrpar\qj \li0\ri0\nowidctlpar\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0\pararsid7810583 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 三}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 教学方法}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 (一)教材处理:由实例引入定义,再根据定义并利用描点法画出函数图象,通过图象得到函数的性质.学生在学习函数时,往往感到比较困难、抽象,不易理解和掌握.要让学生掌握学习函数的一般规律,再继续学习新的函数,学生就能顺理成章,而不会产生无所适从的感觉.}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 (二)教法选择:启发发现法、讨论法。本方法充分体现了教师为主导、学生为主体、训练为主线的}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \u8220\'a1\'b0}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 三为主}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \u8221\'a1\'b1}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 教学原则,充分调动学生的积极性,在教知识的同时,培养学生各方面的能力,并有利于既定目标的渗透。}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 (三)教具使用:投影仪或电脑。

在引导学生观察分析了三种典\loch\af38\hich\af38\dbch\f38 型函数的图象性质之后,将得到的结论直接投影出来,课上的引例、例题、练习题、作业题也都可投影出来.但要注意一定要体现过程教学.比如画函数图象,不要一下就把图象投影出来,这样不利于学生掌握图象的画法,既使用了投影仪或电脑,也要将建立坐标系(要强调三要素)、描点、用光滑曲线将这些点连接起来的整个过程展现出来.}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 四}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 指导学法}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par }\pard \ltrpar\qj \fi480\li0\ri0\nowidctlpar\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0\pararsid7810583 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 通过本节课的学习,培养学生学会以下一几点:善于思考,善于观察,善于动手,善于记忆的学习习惯;理论联系实际,学以致用;数形结合的数学思想方法。}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par }\pard \ltrpar\qj \li0\ri0\nowidctlpar\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0\pararsid7810583 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 五}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 教学过程}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 (一)总体设\loch\af38\hich\af38\dbch\f38 计:引入}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 \emdash }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 讲授新课}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 \emdash }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 课堂练习}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 \emdash }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 课时小结}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 \emdash }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 课后作业}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 (二)具体安排:}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par }\pard \ltrpar\ql \li0\ri0\widctlpar\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0\pararsid7810583 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 1 }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 引入}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 (3}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 分钟}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 )__\par {\shp{\*\shpinst\shpleft1435\shptop931\shpright5304\shpbottom1300\shpfhdr0\shpbxcolumn\shpbxignore\shpbypara\shpbyignore\shpwr1\shpwrk0\shpfblwtxt0\shpz0\shplid1566{\sp{\sn shapeType}{\sv 75}}{\sp{\sn fFlipH}{\sv 0}}{\sp{\sn fFlipV}{\sv 0}}{\sp{\sn dxTextLeft}{\sv 3175}}{\sp{\sn dyTextTop}{\sv 3175}}{\sp{\sn dxTextRight}{\sv 3175}}{\sp{\sn dyTextBottom}{\sv 3175}}{\sp{\sn pib}{\sv {\pict\picscalex100\picscaley103\piccropl0\piccropr0\piccropt0\piccropb0\picw6809\pich635\picwgoal3860\pichgoal360\wmetafile8\bliptag1205424554\blipupi54{\*\blipuid 47d951aa0000000000260001ba220020}\bin988 ______頮____________________________________ _____._____________________@_ 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\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 叫做指数函数。}{\rtlch\fcs1 \af1\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 __\par }\pard \ltrpar\qj \li0\ri0\nowidctlpar\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0\pararsid7810583 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 (1)}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 判断下列函数是否是指数函数:}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par }\pard \ltrpar\qj \li420\ri0\nowidctlpar\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin420\itap0\pararsid7810583 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 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\li0\ri0\nowidctlpar\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0\pararsid7810583 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 (2)}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 已知指数函数}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 f(x)= a}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \super\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 x}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 (a>0,}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 且}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 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\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \trowd \irow0\irowband0\ltrrow\ts11\trleft-45\trftsWidth1\trpaddfl3\trpaddft3\trpaddfb3\trpaddfr3\tblind-42\tblindtype3 \clvertalt\clbrdrt\brdrdb\brdrw2\brdrcf16 \clbrdrl\brdrdb\brdrw2\brdrcf16 \clbrdrb\brdrdb\brdrw2\brdrcf16 \clbrdrr\brdrtbl \cltxlrtb\clftsWidth3\clwWidth480\clshdrawnil \cellx435\clvertalt\clbrdrt\brdrdb\brdrw2\brdrcf16 \clbrdrl\brdrdb\brdrw2\brdrcf16 \clbrdrb\brdrdb\brdrw2\brdrcf16 \clbrdrr\brdrtbl \cltxlrtb\clftsWidth3\clwWidth3315\clshdrawnil \cellx3750\clvertalt\clbrdrt\brdrdb\brdrw2\brdrcf16 \clbrdrl\brdrdb\brdrw2\brdrcf16 \clbrdrb\brdrdb\brdrw2\brdrcf16 \clbrdrr\brdrdb\brdrw2\brdrcf16 \cltxlrtb\clftsWidth3\clwWidth4200\clshdrawnil \cellx7950\row \ltrrow}\trowd \irow1\irowband1\ltrrow\ts11\trleft-45\trftsWidth1\trpaddfl3\trpaddft3\trpaddfb3\trpaddfr3\tblind-42\tblindtype3 \clvertalc\clbrdrt\brdrtbl \clbrdrl\brdrdb\brdrw2\brdrcf16 \clbrdrb\brdrdb\brdrw2\brdrcf16 \clbrdrr\brdrtbl \cltxlrtb\clftsWidth3\clwWidth480\clshdrawnil \cellx435\clvertalt\clbrdrt\brdrtbl \clbrdrl\brdrdb\brdrw2\brdrcf16 \clbrdrb\brdrdb\brdrw2\brdrcf16 \clbrdrr\brdrtbl \cltxlrtb\clftsWidth3\clwWidth3315\clshdrawnil \cellx3750\clvertalt\clbrdrt\brdrtbl \clbrdrl\brdrdb\brdrw2\brdrcf16 \clbrdrb\brdrdb\brdrw2\brdrcf16 \clbrdrr\brdrdb\brdrw2\brdrcf16 \cltxlrtb\clftsWidth3\clwWidth4200\clshdrawnil \cellx7950\pard\plain \ltrpar\s20\qc \li0\ri0\sbauto1\saauto1\widctlpar\intbl\wrapdefault\aspalpha\aspnum\faauto\nosnaplinegrid\adjustright\rin0\lin0\pararsid10048892 \rtlch\fcs1 \af0\afs24\alang1025 \ltrch\fcs0 \fs24\lang1033\langfe2052\loch\af13\hich\af13\dbch\af13\cgrid\langnp1033\langfenp2052 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \fs21\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 图}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \fs21\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \fs21\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 象}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \fs21\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \cell }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \fs21\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 {\*\shppict{\pict{\*\picprop\shplid1028{\sp{\sn shapeType}{\sv 75}}{\sp{\sn fFlipH}{\sv 0}}{\sp{\sn fFlipV}{\sv 0}}{\sp{\sn dxTextLeft}{\sv 0}}{\sp{\sn dyTextTop}{\sv 0}}{\sp{\sn dxTextRight}{\sv 0}}{\sp{\sn dyTextBottom}{\sv 0}}{\sp{\sn fillBackColor}{\sv 0}}{\sp{\sn fFilled}{\sv 1}}{\sp{\sn fLine}{\sv 0}}{\sp{\sn fLayoutInCell}{\sv 1}}}\picscalex100\picscaley99\piccropl0\piccropr0\piccropt0\piccropb0\picw4166\pich4182\picwgoal2362\pichgoal2371\pngblip\bliptag1483977111{\*\blipuid 5873b19700000000b369524286000010}\bin516 塒NG________IHDR___瀇__焈____s____pHYs___蟔__賍_捘____gAMA__睅|鸔揰___cmPPJCmp0712____Om伐___嶪DATH琼粤m?__`o衉贓*yマ_ _?d撔[晸_╛忆郈 菾P_嬲陛_踢詩s 翣O锪_,"_泬 n猞縬Q肠煾x癬M児梌?赊(垒b錫q?鶓t郉 粡菂twG_Z??逩Q掙b蒻=瓘尀薩_6_P忶_?磘},嚒_唈_蔭(?飴?灝?,{vQ!瑹_玕\2_鈔褷tqK_鱩 Q_您}窜碰-篑kG?拑f碮溅拂_鮳瘩"_侓_耛o\玈_??_至﹛ _(簶_確`Ya轊峆Y欐i?Y輠?^x缳_b朹頮*刜耞?_a巔倫_4_癅?宊__X 蘝芲__,_f_c則1_?_紻A?茬溛攴_睑0,}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \fs21\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 且}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \fs21\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 a\u8800\'a1\'d91)}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \fs21\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 叫做指数函数。现在请大家回想以下指数函数的性质。

对上述性质,要求同学们必须熟练掌握应用,但不要求死记硬背.函数图象是研究函数的直观工具,利用图象便于记忆函数的性质和变化规律,掌握研究初等函数的基本方法和步骤有:(}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \fs21\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 1}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \fs21\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 )先给出函数的定义}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \fs21\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \fs21\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 (}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \fs21\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 2}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \fs21\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 )作出函数的图象}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \fs21\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \fs21\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 (}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \fs21\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 3}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \fs21\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 )从定义域、值域、单调性、奇偶性等方面来研究函数的性质。}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \fs21\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par }\pard\plain \ltrpar\qj \li0\ri0\nowidctlpar\wrapdefault\aspalpha\aspnum\faauto\adjustright\rin0\lin0\itap0\pararsid7810583 \rtlch\fcs1 \af0\afs24\alang1025 \ltrch\fcs0 \fs21\lang1033\langfe2052\kerning2\loch\af0\hich\af0\dbch\af13\cgrid\langnp1033\langfenp2052 {\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 (三)板书设计:}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par \hich\af38\dbch\af38\loch\f38}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 指数函数及其性质}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par \hich\af38\dbch\af38\loch\f38 1 }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 指数函数的定\loch\af38\hich\af38\dbch\f38 义:形如}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 y=a}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \super\loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 x}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 (a>0,}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 且}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 a\u8800\'a1\'d91)}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 的函数叫做指数函数}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par \hich\af38\dbch\af38\loch\f38 2 }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 指数函数的图象和性质}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par \hich\af38\dbch\af38\loch\f38 3 }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 例}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \hich\af38\dbch\af38\loch\f38 1__\par \hich\af38\dbch\af38\loch\f38 4 }{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 \loch\af38\hich\af38\dbch\f38 练习}{\rtlch\fcs1 \af0\afs21 \ltrch\fcs0 \loch\af38\hich\af38\dbch\af38\insrsid7810583\charrsid2164849 __\par __\par }{\*\latentstyles\lsdstimax267\lsdlockeddef0\lsdsemihiddendef0\lsdunhideuseddef0\lsdqformatdef0\lsdprioritydef0{\lsdlockedexcept \lsdqformat1 \lsdlocked0 Normal;\lsdqformat1 \lsdlocked0 heading 1;\lsdsemihidden1 \lsdunhideused1 \lsdqformat1 \lsdlocked0 heading 2;\lsdsemihidden1 \lsdunhideused1 \lsdqformat1 \lsdlocked0 heading 3;\lsdsemihidden1 \lsdunhideused1 \lsdqformat1 \lsdlocked0 heading 4;\lsdsemihidden1 \lsdunhideused1 \lsdqformat1 \lsdlocked0 heading 5;\lsdsemihidden1 \lsdunhideused1 \lsdqformat1 \lsdlocked0 heading 6;\lsdsemihidden1 \lsdunhideused1 \lsdqformat1 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