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1、【课题】62 等差数列(一)【教学目标】知识目标:(1)理解等差数列的定义;(2)理解等差数列通项公式能力目标:通过学习等差数列的通项公式,培养学生处理数据的能力【教学重点】等差数列的通项公式【教学难点】等差数列通项公式的推导【教学设计】本节的主要内容是等差数列的定义、等差数列的通项公式.重点是等差数列的定义、等差数列的通项公式;难点是通项公式的推导等差数列的定义中,应特别强调“等差”的特点:daann 1(常数).例 1 是基础题目,有助于学生进一步理解等差数列的定义.教材中等差数列的通项公式的推导过程实际上是一个无限次迭代的过程,所用的归纳方法是不完全归纳法.因此,公式的正确性还应该用数学
2、归纳法加以证明.例 2 是求等差数列的通项公式及其中任一项的巩固性题目,注意求公差的方法.等差数列的通项公式中含有四个量:,1nanda只要知道其中任意三个量,就可以求出另外的一个量【教学备品】教学课件【课时安排】2 课时(90 分钟)【教学过程】教学过程教师行为学生行为教学意图时间*揭示课题62 等差数列*创设情境兴趣导入【观察】介绍播放课件了解观看课件从 实例 出0 教学过程教师行为学生行为教学意图时间将正整数中5 的倍数从小到大列出,组成数列:5,10,15,20,(1)将正奇数从小到大列出,组成数列:1,3,5,7,9,(2)观察数列中相邻两项之间的关系,发现:从第 2 项开始,数列(
3、1)中的每一项与它前一项的差都是 5;数列(2)中的每一项与它前一项的差都是2这两个数列的一个共同特点就是从第2 项开始,数列中的每一项与它前一项的差都等于相同的常数质疑引导分析思考自我分析发 使学 生自 然的 走向 知识点引导式启发学生得出结果5*动脑思考探索新知如果一个数列从第2 项开始,每一项与它前一项的差都等于同一个常数,那么,这个数列叫做等差数列 这个常数叫做等差数列的 公差,一般用字母d 表示由 定 义 知,若 数 列na为 等 差 数 列,d为 公 差,则1nnaad,即总结归纳仔细分析讲解关键词语思考理解记忆带领学生分析10*巩固知识典型例题例已知等差数列的首项为12,公差为-
4、5,试写出这个数列的第2 项到第 5 项解由于5,121da,因此751212daa;25723daa;35234daa.85345daa说明强调引领讲解说明观察思考主动求解通 过例 题进 一步 领会 等差 数列 通项 公式45 1nnaad(6.1)文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:C
5、I9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4
6、S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 H
7、N1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6
8、Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 Z
9、T5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I
10、10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2
11、文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2教学过程教师行为学生行为教学意图时间*运用知识强化练习1.已知na为等差数列,58a,公差2d,试写出这个数列的第8 项8a 2.写出等差数列11,8,5,2,的第 10 项.提问巡视指导动手求解及时了解学生知识掌握得情况25*创设情境兴趣导入你能很快地写出例1 中数列的第101 项吗?显然,依照公式(6.1)写出数列的第101 项,是比较麻烦的,如果求出数列的通项公式,就可以方便地直接求出数列的第 101 项质疑引导分析思考参与分析从实际事例使学生自然的走向知识点30*动脑思考探索新知设等差数列na的公差为d
12、,则,11aa 依此类推,通过观察可以得到等差数列的通项公式11.naand(6.2)知道了等差数列na中的1a 和 d,利用公式(6.2),可以直接计算出数列的任意一项.在例的等差数列na中,112a,5d,所以数列的通项公式为总结归纳仔细分析讲解关键词语思考归纳理解记忆带领学生总结问题得到等 差数 列通 项公式引 导启 发35,21123daddadaa,12daa,321134daddadaa文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G
13、5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R
14、4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H
15、5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y
16、10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z
17、3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编
18、码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U
19、7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2教学过程教师行为学生行为教学意图时间12(1)(5)175nann,数列的第101 项为101175 101488a【想一想】等差数列的通项公式中,共有四个量:na、1a、n和d,只要知道了其中的任意三个量,就可以求出另外的一个量.针对不同情况,应该分别采用什么样的计算方法?学 生思 考求解*巩固知识典型例题例 2 求等差数列,17,11,5,1 的第 50 项.
20、解由于,615,1121aada所以通项公式为,766)1(1)1(1nndnaan即.76nan故.293750650a例 3 在等差数列na中,48100a公差,31d求首项.1a解由于公差,31d故设等差数列的通项公式为11(1)3naan由于10048a,故1148(1001)3a,解得说明强调引领讲解说明引领分析强调含义说明观察思考主动求解观察思考求解领会思考通 过例 题进 一步 领会注意观察学生是否理解知识点反复强调45 文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z
21、3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编
22、码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U
23、7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G
24、5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R
25、4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H
26、5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y
27、10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2教学过程教师行为学生行为教学意图时间115.a【小提示】本题目初看是知道2 个条件,实际上是3 个条件:100n,48,na13d例 4 小明、小明的爸爸和小明的爷爷三个人在年龄恰好构成一个等差数列,他们三人的年龄之和为120 岁,爷爷的年龄比小明年龄的4 倍还多 5 岁,求他们祖孙三人的年龄.分析知道三个数构成等差数列,并且知
28、道这三个数的和,可以将这三个数设为da,a,ad,这样可以方便地求出a,从而解决问题.解设小明、爸爸和爷爷的年龄分别为da,a,da,其中d为公差则dadadaada54,120解得25,40 da从而.65,15dada答 小明、爸爸和爷爷的年龄分别为15 岁、40 岁和 65 岁.【注意】将构成等差数列的三个数设为da,a,ad,是经常使用的方法.求解50*运用知识强化练习练习 6.2.2 启发引导思考了解可以交给文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:
29、CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C
30、4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5
31、HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I
32、6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5
33、ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10
34、I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I
35、2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2教学过程教师行为学生行为教学意图时间1.求等差数列25,1,85,的通项公式与第15 项2.在等差数列na中,50a,1010a,求1a 与公差 d.3.在等差数列na中,53a,915a,判断 48 是否为数列中的项,如果是,请指出是第几项.提问巡视指导动手求解学生自我发现归纳60*理论升华整体建构思考并回答下面的问题:等差数列的通项公式是什
36、么?结论:等差数列的通项公式11.naand质疑归 纳强调小组讨论回答理解强化及 时了 解学 生知 识掌 握情况以 小组 讨论 师生 共同 归纳 的形 式强 调重 点突 破难点70*归纳小结强化思想本次课学了哪些内容?重点和难点各是什么?引导回忆*自我反思目标检测本次课采用了怎样的学习方法?你是如何进行学习的?你的学习效果如何?写出等差数列15,35,1,75,的通项公式,并求出数列的第11 项提问巡视指导反思动手求解检验学生学习效果培 养学 生总 结反 思文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H
37、5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y
38、10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z
39、3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编
40、码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U
41、7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G
42、5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R
43、4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2教学过程教师行为学生行为教学意图时间学 习过 程的 能力80*继续探索活动探究(1)读书部分:教材(2)书面作业:教材习题62(必做);学习指导63(选做)(3)实践调查:寻找生活中等差数列的实例说明记录分 层次 要求90【教师教学后记】项目反思点学生知识、技能的掌握情况学生是否真正理解有关知识;是否能利
44、用知识、技能解决问题;在知识、技能的掌握上存在哪些问题;学生的情感态度学生是否参与有关活动;在数学活动中,是否认真、积极、自信;遇到困难时,是否愿意通过自己的努力加以克服;学生思维情况学生是否积极思考;思维是否有条理、灵活;是否能提出新的想法;是否自觉地进行反思;学生合作交流的情况学生是否善于与人合作;在交流中,是否积极表达;是否善于倾听别人的意见;学生实践的情况学生是否愿意开展实践;能否根据问题合理地进行实践;在实践中能否积极思考;文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z
45、3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编
46、码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U
47、7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G
48、5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R
49、4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H
50、5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y10I10Z3I2文档编码:CI9U7C4S1G5 HN1R4I6Z2H5 ZT5Y