Whatalargepopulation!.doc

Section BThe main activities are 1a and 2a . 本课重点活动是1a和2a。.Teaching aims and demands教学目标1.Master some new words and useful expressions：increase ,chart ,luckily 2.Go on learning the present perfect：(1)What a large population !(2) Its inereasing by 80 million every year .(3)So it is .3.Learn how to read the numbers.Teaching aids教具录音机/多媒体课件/幻灯片/小黑板.Teaching periods :12.Five -finger Teaching Plan五指教学方案Step 1 Review 第一步 复习 （时间:14分钟）1.检查上节课教师布置的探究性作业，组织学生互评，教师选出若干份点评。）T: S1, you did well. S2, excellent2. (英语老师转换角色，当一次地理老师。)T: Today Im not your English teacher. Im your geography teacher. I believe we will be happy in the English-geography class.In this lesson we will learn something about the population of China. We know China has the largest population in the world(多媒体展示中国部分城市人口过多现象以及人口普查图表。). In 2005, Chinas population was 1.3 billion.(板书)1.3 billion: one point three billion(教师再板书两组小数，教会学生怎样去读。)5.68: five point six eight14.05: fourteen point o five（小数点后的“零”可读作“o”,也可读作“zero”。）T: Lets read the numbers below. Try to read them quickly and correctly.(教师迅速在黑板上写出几组数字，用后擦去。)0.08 billion 9.17 miles ￥258.00 452.73meters 10.78 million(学生会积极去读出这些数字，可让小组进行，然后个别提问。)S3: zero (naught) point zero (naught) eight billionS4: nine point one seven milesS5: two hundred and fifty-eight yuanS6: four hundred and fifty-two point seven three metersS7: ten point seven eight millionT: OK. You did very well. Do you know what the population was in 1985?(有的同学可能知道，有的同学可能不知道，但大家可能会纷纷做出猜测。)S8: One point one billion.S9: One point two.billion.T: Stop here. Your answers are nearly right. The population of China in 1985 was 1.06 billion.(教师用小黑板或幻灯片呈现下面的表格。) (板书)One-fifth: 1/51/2: a (one) half1/4: a (one) fourth或a (one) quarter3/4: three-fourths (或three quarters)7/8: seven eighths(用小黑板或幻灯片展示上面图片，让学生充分感知分数表达法，教师领读。)（接下来可采取竞赛形式检查学生的掌握情况。）（方案一）:小组竞赛（使用幻灯片/多媒体/小黑板展示几组数字，在规定时间内看哪组学生读的数量多，正确率高。得分较高的为胜。）1/2 3/4 2/5 6/7 1/6 5/9 11/121/4 5/6 2/15 1/20 11/76 9/11 3/ 8(本组分数只供参考，为了公平，教师可多准备几组数字呈现给大家。)（方案二）：个人竞赛（要求学生回答问题要简洁，明快。找两个同学当裁判，学生们以开火车形式进行比较，在规定时间内看哪个同学读的既快又准。读的最多、最准确者为胜。）（教师加以总结。）T: Well done. G1 is the best (或)S19 is the best.Step 2 Presentation 第二步 呈现 （时间:4分钟）（让学生听听力，填表。）T: We have known a lot about the population and the lifespan. Now please listen to the tape in 1a and complete the chart below.YearThe population of China19852005(用幻灯片/多媒体/小黑板将表格展示给学生。)（如果学生一次不能完成，可听第二遍。）Step 3 Consolidation 第三步 巩固 （时间:10分钟）T: Please read 1a carefully and then perform it.(给学生几分钟时间准备，教师在黑板上写出关键词句。)（建议使用方案:采取评比方式，评出最佳老师及最佳学生。每次选出一个同学表演地理老师的角色，其他同学作为他/她的学生。几组表演之后，让大家推举出最佳老师及最佳同学。）T: Great. I think you all did well. Who do you think is the best teacher and who do you think is the best student?Ss: S1 is T1 is.T: OK. Everyone thinks is the best teacher. is the best student.Congratulations to them.Step 4 Practice 第四步 练习 （时间: 12分钟）1.T: Look at the pictures of 2 and describe it.(让学生通过自己的猜测，用所学过的语言知识把图片描述一下。教师可以先提问程度稍差的同学，目的是复习较大数字的读法并把新旧知识结合起来。)S1: Picture 6 The jacket costs ￥326.00.S2: Picture 2 Its 6 575 miles away from Beijing to Toronto.S3: Picture 1 The mountain is 8 844.43 meters high.S4: Picture 5 The population of China is 1.3 billion.S5: Picture 4 I think the population of Anhui Province is 59.9 million.S6: Picture 3 The animal lived 210 million years ago.T：Yeah, very good. You are great. Now lets listen to the tape of 2 and number the pictures you hear. T: OK, lets check your answers.（教师核对答案。）2.T: Lets play a number game. I will show you some numbers. Read them quickly and correctly in groups. The group that can read the most quickly and the most numbers is the winner.(教师在幻灯片上呈现几组数字，学生以小组为单位进行抢答，两位同学做记分员，读的最多最快、最准确的为胜者。)1/3 8.75 8.459 281 9.99 billion5/8 7/9 68.9 million 789.734 1.06 billion888 1/4 1 05 7 74.91 billion 18.95(类似这样的数字至少要准备三组。)（教师在黑板上画出计分表。）G1G2G3G4(让学生统计得分，自主地构建形成性评价机制。)T: OK. G1 gets G2 gets G3 gets G4 gets so is the winner. Congratulations.3.T: Now I think you can read the numbers quickly. Lets look at the population graph of 2005, then practice dialogs with your partners according to the example.（教师用幻灯片或多媒体课件呈现教材3的图表。）For example:S7: Whats the population of the world/China/India?S8: The world/China/India has a population of/ The population of the world/China/Indiais.(同学们充分练习后，让几组同学做示范。)G1: G2: G3: Step 5 Project 第五步 综合探究活动 （时间:5分钟）1.T: The population problem is the biggest one in China.Now lets discuss the question:What are the problems of Chinas population?(学生小组讨论。)T: Who can talk about it? (学生可能要说的很多，但有些语言他们表达不清楚，教师加以引导，尽量用简洁的语言表达清楚。)S1: The population is still rising.S2: The people in the countryside cant obey the one-child policy.S3: There are more and more old people in some big cities.T: Very good. But what do you think of the future of Chinas population? Please discuss it.(鼓励学生不用举手，自觉站起来表达自己的观点。)S4: The population of China will be 1.5 billion in 2050.S5: Maybe China will have a population of 1.2 billion in 2050.(学生可能做出种种猜测。)2.Homework: All of you did this lesson actively. We have known about the population of China. Please go on discussing it in groups after class. Then write a report about the population of the future and the present. And then predict what problems it may bring out.（三）练习题单项选择题:(1) a large population!A.HowB.WhatC.How manyD.How much(2)China has the largest with 1.3 billion.A.peopleB.populationC.peoplesD.populations(3)They all their money,so they have to walk home.A.spendB.had spent C.have spentD.