
1、Read and Write部分的课件及录音。 2、Pronunciation部部分的录音。 3、单词卡片:sunny,warm,cold,snowy,cool,cold, cloudy, hot, rainy, windy。 【教学过程 】 (一)热身、复习 (Warm-up/Revision) 出示单词卡:warm,hot,cool,cold,rainy,snowy,windy,sunny,cloudy,学生集体朗读。 请学生打开书P52,看记录回答教师问题: 教师提问:What’s the weather like in Beijing? What’s the weather like in Shanghai? 请4位学生分别提问Harbin,Lhasa,Urumqi,Hongkong的天气,大家回答。 请学生朗读P51对话后的句子:It’s cool. 在本上认真书写句子It’s cool. 教师要巡视检查。 (二)呈现新课 (Presentation) A. Lead-in 请学生继续看记录,教师提问: Is it warm in Beijing? Is it snowy in Harbin? Is it cool in Shanghai? Is it windy in Lhasa? Is it cold in Urumqi? Is it hot in Hong Kong? 引导学生根据记录用Yes, it is. 或No, it isn’t. 回答。 请学生用Is it…?分别猜一猜London,Sydney,Singapore,Moscow的天气,教师前一天根据天气预报情况用Yes, it is. 或No, it isn’t. 回答学生的提问。 请学生朗读P51对话后的句子:Is it cold?并说出意思。 学生在本上规范书写句子Is it cold?教师提示学生注意标点是?。

(1)呈现猴子图片,初步接触知识.教师在发指令时,加入 Touch your tail.当学生觉得茫然时,老师趁机出示课件(一只猴子)Look,We have no tails,but the monkey has.Look at the monkey,How long is the tail?在课件上呈现数据38cm.学生回答:Its tail is38cm long.根据教材内容教师提问:How tall is the monkey?学生:It’s 40cm tall.老师自己引出only一词,注意这个词的发音.多媒体再出示两只猴子的图片,一只黄色,一只棕色,让学生加以比较.教师问:Which monkey do you like?The yellow one or the brown one?【设计思路】 学生在回答这些问题时,也同时在复习前两课时所学内容,起到知识循环的作用.(2)猜一猜游戏:它们有多高?让学生猜一猜这两只猴子的身高.注意提示学生用上I think….这一句型,表示自己的猜测.在这里也可安排一个竞赛,看谁能猜中正确数据,教师让一些学生猜后出示数据.【设计思路】 学生对有悬念的东西都特别感兴趣,在此不仅练习了两位数的读法,又满足了学生的好胜心理.

4.巩固和扩展(Consolidation and extension) (1) 做本单元活动手册配套练习。 (2) 翻卡片说单词。学生两人一组,把单词卡片反面朝上放在桌子上,然后同时翻开两张单词卡(如:going, holiday),就马上组织成一句话(如:Where are you going on the holiday?/ I’m going to Kunming this holiday.),说得快又正确者为胜。 (3) 教师播放C部分Story time的录音或VCD,帮助学生理解故事内容。学生再听一遍录音,跟读故事里的句子,教师指导学生发音。 (4) Bright eyes. 在黑板上张贴Let’s find out的8幅图片,Mike, Zhang Peng, Sarah, Kathy等4个人物图片分别放在8幅图片上,如:Mike ---take pictures---buy presents。学生仔细观察后,请学生闭上眼睛,教师就趁学生闭眼之际交换人物位置(如把Mike放到eat noodles),然后请学生张开眼睛回答:What did Mike do just now ? 引导学生回答: Mike took pictures and bought presents. 教学参考资料库 1.文化背景介绍: 机场标志: Airport 飞机场 Airport lounges 机场休息室Airports shuttle 机场班车 Arrivals 进港Assistance 问讯处Check in area (zone) 办理登机区Departure airport 离港时间Departure times on reverse 返航时间 Welcome aboard 欢迎登机

回答:She’s sad. She failed the math test.并板书:fail the math test。准备一张很糟的数学试卷,是学生了解语意。进一步教学其他短语a Chinese test, a English test,并 让学生了解pass the Chinese test, pass the English test, pass the math test. (4)教师请学生扮演Sarah,师生对话如下: T: Hello! Sarah, how are you? You look sad today. Sarah: Yes, I failed the math test. 教师接着说:I’m sorry to hear that.让学生理解意思。并引申出句子:I’m glad to hear that.让学生分角色朗读对话。 (5)Let’s check.让学生看Sarah的表情,并读两篇对话,选出正确的答案。 (6)活动名称:心理医生 活动目的:操练句型“How are you? You look…”.学生间自由组合编排对话.通过对话对学生展开情感教学,让学生理解健康的体魄和愉悦的心情的心情是一个人成功的重要因素,使学生形成良好的心理健康状态。 活动过程:A: How are you? You look bored today. B: Yes. I failed my math test. A: I’m sorry to hear that. Believe yourself. Work hard. You can pass the text next time. (7)活动名称:难忘时刻 活动目的:围绕照片上的表情展开询问和讨论.操练句型 “How do you feel? How does she/he feel?

Ⅰ. Teaching Aims and Demands1. Knowledge Objects(1) Key Vocabularyoversleep(2) Target LanguageWhat happened?I overslept. And by the time I got up, my brother had already gotten in the shower.2. Ability Objects(1) Teach the students to use the new words.(2) Train the students to narrate past events with the Past Perfect Tense.(3) Train the students' listening and speaking skills with the target language.3. Moral ObjectIt’s a good habit to go to bed early in the evening and get up early in the morning. So you’ll never be in a hurry in the morning.Ⅱ. Teaching Key Points1. Key Vocabularyoversleep2. Target LanguageNarrate past events with the Past Perfect TenseⅢ. Teaching Difficult Points1. Train the students to narrate past events with the Past Perfect Tense.2. Train the students to understand the target language in spoken conversation.Ⅳ. Teaching Methods1. Thinking of examples from the students' real lives.2. Making sentences by looking at the pictures.Ⅴ. Teaching AidA tape recorderⅥ. Teaching ProceduresStep I Revision1. Revise the language points in Unit 8.Ask some questions like this: What volunteer work would you like to do?Help the students to answer, I’d like to…/I love to…/I hope to2. Practice the dialogue in Activity 3c on page 62 again. Get students to role play the similar dialogues with the following.

1. 教材分析本单元以how do things affect you?为话题, 从颜色、天气、音乐、广告、产品等方面谈论了外界事物如何影响人的心情。要求学生掌握表达某物或某事给人带来的感觉、看法或影响等。共设计了四个部分的内容:Section A 该部分有4个模块:第一模块围绕Which restaurant would you like to go to?这一话题展开思维(1a)、听力(1b)、口语(1c)训练;第二模块围绕How does music affect you? 进行听力(2a-2b)、口语训练(2c);第三模块继续围绕how do colors in the restaurant affect you这一话题展开训练,训练形式为阅读和问题体验(3a)和小组活动(3b);第四模块仍就How do things affect you这一话题以调查的形式展开讨论。Section B该部分有4个模块:第一模块围绕产品广告对人们的影响这一话题以“配对”(1a)与“列举”(1b)两种形式展开训练;第二模块继续围绕How do things affect you? 进行听力(2a-2b)、口语对话训练(2c);第三模块围绕“Advertising”这一话题展开阅读(3a-3b)和写作(3c)训练;第四模块围绕How posters affect you这一话题以口语训练形式展开小组活动。

Step Ⅰ RevisionCheck homework. Ask a few students to read the article in 3a.Then ask a few students to read their guides.Step Ⅱ Part 1Look at the words in the box. Ask a student to read them. Make sure the students understand the meaning of the words. You are to fill in the blanks with the words. In some cases, students may need to use another form of the word, for example adjusting for tense or subject/ verb agreement.Ask students to fill in the blanks on their own.Check the answers. Step ⅢPart 2Go through the instructions with the class.Look at the example with the students.Ask students what the answer would be.Ask a student to read the question and answer it.Excuse me, could you tell me where the bank is, please?The bank is across the street from the shopping malt.Get students to complete the work in pairs.Check the answers. Ask a few students to read their questions.Step Ⅳ Just for Fun!Ask all the students to read the conversation. Ask: What is funny about this cartoon? Help students to explain. A Martian is a person from the planet Mars.There is no such thing as Martian food on Earth, and the clerk looks silly because he is trying to think of where there is a Martian restaurant.Invite some pairs of students to present this conversation to the rest of the class.Step Ⅴ Summary and HomeworkIn this class, we’ve done much writing practice using the key vocabulary words and the target language presented in this unit. After class, please finish the questions in 2 in your exercise books. Then finish the exercises on pages 47~48 of the workbook as well.The Seventh Period Ⅰ Teaching Aims and Demands1. Knowledge Objects(1) Key Vocabularyimage, adventure, jealousy, hero, crime, journey, brave, no longer, show interest in, take it easy, become interested in, plain looks(2)Text:Grown-ups like cartoons, too.2. Ability Objects(1) Fast-reading to get a general idea of the text.(2) Careful-reading to get the detailed information in the text.

Talk about offering help (P60)I’ll help clean up the city parks.A: I’d like to work ...B: You could help ...Talk about ways to tell people about the Clean-Up Day (P61)We need to ...We can’t ...I’ll ...Talk about the work the volunteers do (P62)These three students all volunteer their time to help other people.Somebody loves to ... / helps ... / plans to ... / wants to ...A: What do you like doing?B: I like ... A: What kind of volunteer work do you think I could do?B: You could ...1. 重点词汇advertisement, fix, repair, pleasure, blind, deaf, shut, carry, specially, fetch2. 认读词汇hunger, homeless, cheer, clean-up, sign, establish, major, commitment, elementary, veterinarian, coach, similar, call-in, strategy, disabled, organization, unable, support, appreciate, donation, part of speech, pronoun, adverb, preposition, conjunction, donate, Jimmy, Sally3. 词组clean up, cheer up, give out, put off, set up, think up, take after, fix up, give away, put up, hand out, work out, at once

本单元主要围绕着有关濒临灭绝的动物这一话题,学习了应该怎样保护我们的环境,以及就某一问题展开辩论。目标提示语言目标能够运用所学知识,就某一问题展开辩论。认知目标1、复习一些语法:现在进行时、一般现在时、用used to 表示一般过去时、现在完成时、一般过去时的被动语态。2、学会表达同意和不同意。3、学会以下基本句型:We’re trying to save the manatees.Manatees eat about 100 pounds of food a day.There used to be a lot of manatees.In 1972,it was discovered that they were endangered.Some of the swamps have become polluted.情感目标了解一些濒临灭绝的动物的生活习性和濒临灭绝的原因,教育学生应该如何保护环境。教学提示充分利用多媒体等教学设备,创设与本课话题相关的情境,如各种不同种类的动物、动物园以及有关环境的画画等等。围绕着本单元的教学目标,设计一些贴近学生实际的教学任务,如让学生谈论自己最喜欢的动物,如何拯救濒危动物,如何保护环境等等。让学生根据所学知识,就动物园是否对动物有利以及其他的话题进行辩论。

教学目标:1. 掌握本单元一些重点词汇的写法和用法。2. 学会自如谈论餐桌礼仪。Step 1 RevisionAsk some students to retell the customs at the table in France in the passage in 3a.Step 2 Self checkPart 1. Fill in each bland with the correct word given. Students do the exercises by themselves at first. Then check the answers. Ask the students to comprehend the sentences and help them point out uses of some words, like “arrive (at / in) sw., spend time / money on sth , spend time / money (in) doing sth.”Part 2. Read about Fan Ling’s experience in a western restaurant. Understand the passage. Point out some key points in the passage.1. be / get used to doing sth. 习惯做某事2. begin with = start with 以….开头3. crowd v. 挤满,塞满 the crowd 人群 crowded adj. 拥挤的Then students discuss about how she would solve her problem. Ask some to share their stories with others.Part 3. Complete the crossword by looking at the sentences on the left. Then check the answers.

3. 新课呈现(Presentation) Let’s make (1)教师说:Miss White is making a book about her students. So she can remember them well.Who are the students? 请学生独立或分小组朗读四段短文,解释学生不理解的句子,然后说:There are four pictures below. Would you like to help Miss/White glue the pictures? 教师知道学生完成图文搭配的练习。 (2)教师发给每名学生一张铅画纸,说:Now please draw a picture of your best classmate. Then describe him or her.学生画一副最要好的同学的肖像,并在傍边配上对该同学的英语介绍。 学生上讲台介绍自己最要好的同学,请其他学生猜是谁,看谁说的生动又贴切,教师给予评价时注意强调第三人称单数形式的使用。 Story time 教师向学生展示Story time部分的教学挂图,指着最后一副图中的Zoom 和 Zip说 Look at the picture. Zoom and Zip are sad. They are saying goodbye to each other. Now let’s see What happened. 学生同桌之间合作阅读或是,然后教师提出问题Where is Zip going? Is this good news for zoom ? What grade is Zip going to be in? 教师放录音,学生录音跟读故事,然后再分角色朗读.

探究二:100以内数的大小比较。1、 (媒体出示课本第39页例8鸡蛋图。)师:看这鸡蛋图,谁知道哪边的鸡蛋多一些?你是怎么比较的?(学生可能回答:(1)根据鸡蛋图比较。(2)根据数的顺序比较。(3)根据数的组成比较。)(根据学生回答,点击○媒体出示答案。)2、 师:刚才我们看着鸡蛋图比较了两个数的大小,那如果没有图,我们会不会直接比较两个数的大小呢?我们请计数器来帮忙,谁来拨?(媒体出示计数器)师:谁能来说说每个数位上数的意义,再进行比较,说说比较的方法。(学生已经有了比较20以内数的大小的基础,教师引导学生在此基础上说出:28是由2个十和8个一组成,26是2个十和6个一组成,所以28>26;或者根据数数时28在26后面,所以28>26。)(点击表示28的计算器图,媒体出示28是由2个十和8个一组成;点击表示26的计算器图,媒体出示:26是由2个十和6个一组成;点击“26是由2个十和6个一组成”,媒体出示:28>26。)(师板书:28>26)

(2)由题意可得-10x2+180x+400=1120,整理得x2-18x+72=0,解得x1=6,x2=12(舍去).所以,该产品的质量档次为第6档.方法总结:解决此类问题的关键是要吃透题意,确定变量,建立函数模型.变式训练:见《学练优》本课时练习“课后巩固提升”第8题三、板书设计二次函数1.二次函数的概念2.从实际问题中抽象出二次函数解析式二次函数是一种常见的函数,应用非常广泛,它是客观地反映现实世界中变量之间的数量关系和变化规律的一种非常重要的数学模型.许多实际问题往往可以归结为二次函数加以研究.本节课是学习二次函数的第一节课,通过实例引入二次函数的概念,并学习求一些简单的实际问题中二次函数的解析式.在教学中要重视二次函数概念的形成和建构,在概念的学习过程中,让学生体验从问题出发到列二次函数解析式的过程,体验用函数思想去描述、研究变量之间变化规律的意义.

4.x的值是否可以任意取?如果不能任意取,请求出它的范围,[x的值不能任意取,其范围是0≤x≤2]5.若设该商品每天的利润为y元,求y与x的函数关系式。[y=(10-8-x) (100+100x)(0≤x≤2)]将函数关系式y=x(20-2x)(0 <x <10=化为:y=-2x2+20x (0<x<10)…(1)将函数关系式y=(10-8-x)(100+100x)(0≤x≤2)化为:y=-100x2+100x+20D (0≤x≤2)…(2)三、观察;概括1.教师引导学生观察函数关系式(1)和(2),提出问题让学生思考回答;(1)函数关系式(1)和(2)的自变量各有几个? (各有1个)(2)多项式-2x2+20和-100x2+100x+200分别是几次多项式?(分别是二次多项式)(3)函数关系式(1)和(2)有什么共同特点? (都是用自变量的二次多项式来表示的)(4)本章导图中的问题以及P1页的问题2有什么共同特点?让学生讨论、归结为:自变量x为何值时,函数y取得最大值。2.二次函数定义:形如y=ax2+bx+c (a、b、、c是常数,a≠0)的函数叫做x的二次函数, a叫做二次函数的系数,b叫做一次项的系数,c叫作常数项.

解析:根据锐角三角函数的概念,知sin70°<1,cos70°<1,tan70°>1.又cos70°=sin20°,锐角的正弦值随着角的增大而增大,∴sin70°>sin20°=cos70°.故选D.方法总结:当角度在0°cosA>0.当角度在45°<∠A<90°间变化时,tanA>1.变式训练:见《学练优》本课时练习“课堂达标训练”第10题【类型四】 与三角函数有关的探究性问题在Rt△ABC中,∠C=90°,D为BC边(除端点外)上的一点,设∠ADC=α,∠B=β.(1)猜想sinα与sinβ的大小关系;(2)试证明你的结论.解析:(1)因为在△ABD中,∠ADC为△ABD的外角,可知∠ADC>∠B,可猜想sinα>sinβ;(2)利用三角函数的定义可求出sinα,sinβ的关系式即可得出结论.解:(1)猜想:sinα>sinβ;(2)∵∠C=90°,∴sinα=ACAD ,sinβ=ACAB .∵AD<AB,∴ACAD>ACAB,即sinα>sinβ.方法总结:利用三角函数的定义把两角的正弦值表示成线段的比,然后进行比较是解题的关键.

[教学目标]1、 理解并掌握正弦、余弦的含义,会在直角三角形中求出某个锐角的正弦和余弦值。2、能用函数的观点理解正弦、余弦和正切。[教学重点与难点] 在直角三角形中求出某个锐角的正弦和余弦值。[教学过程] 一、情景创设1、问题1:如图,小明沿着某斜坡向上行走了13m后,他的相对位置升高了5m,如果他沿着该斜坡行走了20m,那么他的相对位置升高了多少?行走了a m呢?2、问题2:在上述问题中,他在水平方向又分别前进了多远?二、探索活动1、思考:从上面的两个问题可以看出:当直角三角形的一个锐角的大小已确定时,它的对边与斜边的比值________;它的邻边与斜边的比值________。(根据是__________________。)2、正弦的定义 如图,在Rt△ABC中,∠C=90°,我们把锐角∠A的对边a与斜边c的比叫做∠A的______,记作________,即:sinA=________=________.3、余弦的定义 如图,在Rt△ABC中,∠C=90°,我们把锐角∠A的邻边b与斜边c的比叫做∠A的______,记作=_________,即:cosA=______=_____。(你能写出∠B的正弦、余弦的表达式吗?)试试看.___________.

一、本章知识要点: 1、锐角三角函数的概念; 2、解直角三角形。二、本章教材分析: (一).使学生正确理解和掌握三角函数的定义,才能正确理解和掌握直角三角形中边与角的相互关系,进而才能利用直角三角形的边与角的相互关系去解直角三角形,因此三角形函数定义既是本章的重点又是理解本章知识的关键,而且也是本章知识的难点。如何解决这一关键问题,教材采取了以下的教学步骤:1. 从实际中提出问题,如修建扬水站的实例,这一实例可归结为已知RtΔ的一个锐角和斜边求已知角的对边的问题。显然用勾股定理和直角三角形两个锐角互余中的边与边或角与角的关系无法解出了,因此需要进一步来研究直角三角形中边与角的相互关系。2. 教材又采取了从特殊到一般的研究方法利用学生的旧知识,以含30°、45°的直角三角形为例:揭示了直角三角形中一个锐角确定为30°时,那么这角的对边与斜边之比就确定比值为1:2。

(3)若要满足结论,则∠BFO=∠GFC,根据切线长定理得∠BFO=∠EFO,从而得到这三个角应是60°,然后结合已知的正方形的边长,也是圆的直径,利用30°的直角三角形的知识进行计算.解:(1)FB=FE,PE=PA;(2)四边形CDPF的周长为FC+CD+DP+PE+EF=FC+CD+DP+PA+BF=BF+FC+CD+DP+PA=BC+CD+DA=23×3=63;(3)假设存在点P,使BF·FG=CF·OF.∴BFOF=CFFG.∵cos∠OFB=BFOF,cos∠GFC=CFFG,∴∠OFB=∠GFC.∵∠OFB=∠OFE,∴∠OFE=∠OFB=∠GFC=60°,∴在Rt△OFB中,BF=OBtan∠OFB=OBtan60°=1.在Rt△GFC中,∵CG=CF·tan∠GFC=CF·tan60°=(23-1)×3=6-3,∴DG=CG-CD=6-33,∴DP=DG·tan∠PGD=DG·tan30°=23-3,∴AP=AD-DP=23-(23-3)=3.方法总结:由于存在性问题的结论有两种可能,所以具有开放的特征,在假设存在性以后进行的推理或计算.一般思路是:假设存在——推理论证——得出结论.若能导出合理的结果,就做出“存在”的判断,若导出矛盾,就做出“不存在”的判断.

解析:首先求得圆的半径长,然后求得P、Q、R到Q′的距离,即可作出判断.解:⊙O′的半径是r= 12+12=2,PO′=2>2,则点P在⊙O′的外部;QO′=1<2,则点Q在⊙O′的内部;RO′=(2-1)2+(2-1)2=2=圆的半径,故点R在圆上.方法总结:注意运用平面内两点之间的距离公式,设平面内任意两点的坐标分别为A(x1,y1),B(x2,y2),则AB=(x1-x2)2+(y1-y2)2.【类型四】 点与圆的位置关系的实际应用如图,城市A的正北方向50千米的B处,有一无线电信号发射塔.已知,该发射塔发射的无线电信号的有效半径为100千米,AC是一条直达C城的公路,从A城发往C城的客车车速为60千米/时.(1)当客车从A城出发开往C城时,某人立即打开无线电收音机,客车行驶了0.5小时的时候,接收信号最强.此时,客车到发射塔的距离是多少千米(离发射塔越近,信号越强)?(2)客车从A城到C城共行驶2小时,请你判断到C城后还能接收到信号吗?请说明理由.

我们知道圆是一个旋转对称图形,无论绕圆心旋转多少度,它都能与自身重合,对称中心即为其圆心.将图中的扇形AOB(阴影部分)绕点O逆时针旋转某个角度,画出旋转之后的图形,比较前后两个图形,你能发现什么?二、合作探究探究点:圆心角、弧、弦之间的关系【类型一】 利用圆心角、弧、弦之间的关系证明线段相等如图,M为⊙O上一点,MA︵=MB︵,MD⊥OA于D,ME⊥OB于E,求证:MD=ME.解析:连接MO,根据等弧对等圆心角,则∠MOD=∠MOE,再由角平分线的性质,得出MD=ME.证明:连接MO,∵ MA︵=MB︵,∴∠MOD=∠MOE,又∵MD⊥OA于D,ME⊥OB于E,∴MD=ME.方法总结:圆心角、弧、弦之间相等关系的定理可以用来证明线段相等.本题考查了等弧对等圆心角,以及角平分线的性质.
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