(完整word版)2019-2020年高三数学上册15.3《旋转体的概念》学案沪教版.pdf

《(完整word版)2019-2020年高三数学上册15.3《旋转体的概念》学案沪教版.pdf》由会员分享，可在线阅读，更多相关《(完整word版)2019-2020年高三数学上册15.3《旋转体的概念》学案沪教版.pdf（7页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、2019-2020 年高三数学上册 15.3 旋转体的概念学案沪教版一 旋转体定义：一条平面曲线（包括直线）绕它所在的平面内的一条定直线旋转所形成的曲面叫 旋转面。这线叫 旋转轴。无论旋转到什麽位置这条曲线叫旋转面的母线。封闭的旋转面围成的几何体叫旋转体。旋转面的轴叫 旋转体的轴。二 几种常见的旋转体定义：矩形绕一边旋转一周所围成的几何体叫圆柱。绕一直角边旋转一周所围成的几何体叫圆锥。直角梯形绕垂直于底边的腰旋转一周所围成的几何体叫圆台圆绕它的直径旋转一周所围成的几何体叫球。注意：（1）垂直于轴的线段绕轴旋转一周形成圆面。（2）与轴相交的直线绕轴旋转一周形成圆锥面。（3）与轴平行的直线绕轴旋转

2、一周形成圆柱面。（4）不平行也不相交的线段绕轴旋转一周形成圆台面。折线旋转形成上锥、下台2性质圆柱圆锥圆台球底 面平行且全等的圆圆 面相 似 的 两 个 圆面轴 线过底面圆心且垂直底面过顶点和底面圆心垂直于底面过 上 下 底 面 圆心且垂直底面过球心母 线平行且相等且垂直于底面相交于一点延 长 线 交 于 一点大圆(过球心)小圆(不过球心轴 截 面全等的矩形,两边是母线,另两边是两底直径全等的等腰三角形全等的等腰梯大圆平 行 于 底 面的截面全等的圆与底面相等相似的圆（比例关系）圆球 心 和 截 面 圆 圆心连线垂直截面侧面展开图矩形扇形扇环三、体中各元素间的关系上述个体中各元素间的关系是通过

3、三角形、矩形、梯形、圆、扇形等来体现O O O O1O1A1A1V A A A 精品资料-欢迎下载-欢迎下载 名师归纳-第 1 页，共 7 页 -的。这些关系是求体积、表面积及其它有关问题的有力依据。1正 n 棱柱（n3）侧面展开图 h=l=三个矩形：ABB1A1 ，AOO1A1 ，GOO1G1 两个直角三角形：RtO1A1G1 RtOAG，2正 n棱锥侧面展开图四个直角三角形：；（1）RtVOA （2）RtVOF （3）RtVAF （4）RtOAF 3正 n棱台三个直角梯形：(1)梯形 OO1A1B (2)梯形 OO1E1E (3)梯形 EE1B1B 两个相似三角形：RtOBE Rt O1B

4、1E1；=；=4圆柱D C1A1D1C B A a d r E h l B1EO OA D C B l h O1Or 侧面展开图2r 红色为轴截面r d G A B C h B1 G1 A1 O1 O l F A B r d E O C D V h l l 精品资料-欢迎下载-欢迎下载 名师归纳-第 2 页，共 7 页 -文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W

5、3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8

6、HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W

7、9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2

8、ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5

9、A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7

10、文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:C

11、S10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7矩形 OO1BA h=l 矩形 ABCD AD=BC=2r BD=S圆柱侧=S矩 ABCD=2 rlBD是从 B绕圆柱侧面一周到A的最短距离5圆锥：一个三角形及一个扇形RtOPA中扇形中 =C=2 r ；=；=2lsin 为从 A出发绕圆锥侧面一周再回到A的最短距离 S 圆锥侧=S扇=rl=cl 6圆台：一个梯形及一个扇环。（可恢复成锥）直角梯形中扇环中 =2=C；=2r=C；=S圆台侧=S扇环=（r+）l=（c+）l 为从绕圆台一周到A的

12、最近距离。证明：由比例性质=lrrlrrrrlr)(22207球：两个直角三角形PBAOrhl侧面展开图红色为轴截面O A r h l 侧面展开图B 红色为轴截面精品资料-欢迎下载-欢迎下载 名师归纳-第 3 页，共 7 页 -文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8

13、HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W

14、9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2

15、ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5

16、A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7

17、文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:C

18、S10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W

19、3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7RtABC中 =（R+d）（R-d）=2R（R+d）=2R（R-d）+=4 RtAO1O中=+四、表面积和体积公式1球冠定义：球面被平面所截得的一部分叫做球冠，球冠也可以看作一段圆弧绕经过它的一个端点直径旋转所成的曲面。S球冠=2 Rh（舍）2球缺定义：一个球被平面剪下的一部分叫做球缺。V球缺=h2（3R-h）（舍）h：球缺的高；R：球的半径。正棱台侧面积公式 S正棱台侧 =（c+）c=0 S正棱柱侧 =c S正棱锥侧 =c 圆台侧面积公式 S圆台侧 =（c+）l=（R+r）l c=（r=R）=0（r=0）S圆柱侧 =cl=2Rl S

20、圆锥侧 =ch=Rl 台体的体积公式 V台=h（s+）s=0 V柱=sh V锥=sh 圆台的体积公式 V圆台=h（r2+2+r）r=0 V圆柱=r2h V圆锥=r2h 球冠表面积：S球冠=2 Rh h=2R S球=4 R2 球缺体积：V球缺=h2（3R-h）h=2R V球=R3=d3 五、球面距离在球面上两点之间的最短距离就是经过这两点的大圆在这两点间的一段劣弧的长度，这个弧长叫两点间球面距离。O P Q O A B K 40经度纬度精品资料-欢迎下载-欢迎下载 名师归纳-第 4 页，共 7 页 -文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:C

21、S10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W

22、3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8

23、HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W

24、9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2

25、ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5

26、A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7

27、文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C72019-2020 年高三数学上册 15.3 旋转体的概念教案沪教版一、教学内容分析本节课是在学习完棱柱、棱锥两种特殊的多面体之后，学习的第二类简单的几何体，圆柱与圆锥学生已经有所接触，但只是生活意义上的理解，课本这里是给出数学定义.圆柱与圆锥内容的承上之处是它们

28、与棱柱、棱锥都是由四边形或三角形构成的，区别在于构成的方式不同，这里学生认知上的一个重要发展是曲面的概念及其形成的数学理解.而这一发展又正好是对球的概念及所有旋转体的概念的形成起到了启下作用，是学生后序发展的最近发展区.二、教学目标设计1、理解圆柱、圆锥及其有关概念的形成过程；2、理解圆柱、圆锥的侧面的母线的概念及母线之间的关系，母线所具有的性质；3、通过对圆柱、圆锥的研究培养空间想象力及知识的自我生成和发展能力.三、教学重点及难点重点是圆柱、圆锥概念的生成；难点是母线及其相关性质的理解和简单应用.四、教学用具准备教具、学具：圆柱，圆锥实物模型、多媒体设备（宋体四号）五、教学流程设计六、教学过

29、程设计复习多面体，给出模型引入课题母线及其性质的理解圆柱概念的生成及辨析例题分析拓展到圆锥旋转体概念的概括巩固练习总结作业布置精品资料-欢迎下载-欢迎下载 名师归纳-第 5 页，共 7 页 -文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5

30、A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7

31、文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:C

32、S10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W

33、3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8

34、HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W

35、9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2

36、ZT10S5A5S1C7一、情景引入 1 观察总结概括多面体及其重要特征，然后给出圆柱、圆锥、球和其他旋转体引入旋转体的概念.2思考圆柱可看成由何种平面图形绕它所在平面内的一条直线旋转形成的？3讨论通过从不同角度观察圆柱并联想到特殊图形讨论可以是何种图形，如何旋转可得到圆柱二、学习新课 1概念辨析圆柱的概念:圆柱的轴，圆柱的底面，侧面，侧面的母线及圆柱的高.底面和侧面分别是由矩形的哪条边旋转得到的？底面由与轴垂直的边旋转得到，所以圆柱的底面是圆面且垂直于轴.侧面是由与轴平行的边旋转得到，所以侧面是曲面，且该边旋转到任何位置所得到的线段都是侧面的母线，因此母线有无穷多条,互相平且相等.2例题分析

37、例 1 用垂直于轴的平面截圆柱，所得截面是何种图形？例 2 用平行于轴的平面截圆柱，所得截面是何种图形？例 3 把圆柱的侧面沿一条母线展开，所得图形是哪种图形？可以实物引导学生具体操作，探究并解决问题.3问题拓展根据对圆柱的学习，你能否研究一下圆锥，得出与圆柱相应的概念、性质，并回答与圆柱的三个例题相对应的问题？下面可以让学生独立或分组根据实物对圆锥进行研究，教师巡视观察学生的进展情况，并随时给予指导.最后由学生总结研究结果.在学习过圆柱和圆锥的基础上引导学生给出旋转体的概念.三、巩固练习1、举出生活中的圆柱和圆锥的实例.2、用垂直于圆柱底面的平面截圆柱，何时截面面积最大？最大面积是多少？3、

38、若直角三角形绕其斜边所在直线旋转一周所得几何体是何形状？四、课堂小结精品资料-欢迎下载-欢迎下载 名师归纳-第 6 页，共 7 页 -文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4

39、W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2

40、 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S

41、5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C

42、7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:

43、CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9

44、W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C71、圆柱，圆锥，旋转体的概念，和侧

45、面母线，侧面展开图形状.2、圆柱与圆锥垂直于轴的截面和平行于轴的截面的特点.五、作业布置练习册，拓展作业：1、求过圆锥顶点的截面三角形顶角的最大值和面积的最大值.2、与圆柱和圆锥的轴斜交的平面截圆柱和圆锥所得截面是何种图形？七、教学设计说明圆柱、圆锥学生已经有所接触，所以并不陌生，但是学生的经验或知识仅是感性经验，并没有上升到数学的角度，所以对圆柱和圆锥的本质特点往往把握不准.因此本节课在设计时把重点放在从数学的角度观察圆柱和圆锥，揭示其数学特征，并用数学语言表示描述其特征上，让学生体验把感性知识数学化的过程.在练习和作业中的截面问题要求较高，可根据学生的情况控制难度.另外从知识的呈现次序上，

46、与课本先总后分不同，采用了先分后总的次序，比较符合认识规律.精品资料-欢迎下载-欢迎下载 名师归纳-第 7 页，共 7 页 -文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1

47、M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT1

48、0S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S

49、1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编

50、码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10P9W3F5K8 HF4M4W9S1M2 ZT10S5A5S1C7文档编码:CS10