1、九年级上仁爱版英 Unit1 Topic 2 The 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. Learn the new words and useful expressions:difficulty, be short of, so far, percent, offer.2. Talk about the problems the overpopulation brings about:(1)Its difficult for lots of people to fi
2、nd jobs(2), we are short of energy and water.(3)Most cities are more crowded than before, and the traffic is much heavier. 3. Get students to know how serious the worlds population problem is. . Teaching aids 教具录音机/多媒体/小黑板/图片. Five-finger Teaching Plan 五指教学方案Step 1 Review 第一步 复习(时间 :10分钟)1. (用添加数字的方
3、法复习高位数字，使学生由浅入深地掌握知识。操作：教师首先在黑板上写出一个两位数，然后逐次在后面加上一个数字，被提问的学生由基础较差的向基础较好的依次递进。)T: Ill write numbers like this “88-888-8888, -8,888,888,888”. Say these numbers as quickly as you can, clear?Ss:Yes.T: 88.S1: Eighty-eight.T: 888.S2: Eighty hundred and eighty-eight.T: 8,888.S3: Eight thousand, eight hundr
4、ed and eighty-eight.T: 8,888,888,888S3: Eight billion, eight hundred and eighty-eight million, eight hundred and eighty-eight thousand, eight hundred and eighty-eight.2. (多媒体展示世界各国人口图表，复习 Section B 中重要句型。)T: You have mastered how to say these numbers. Now look at the chart and review what weve learn
5、ed in Section B. Whats the population of the world?Ss:It is said that the world has a population of 6.5 billion.T: Which country has the largest population?Ss:China has the largest population with 1.3 billion.T: Is the worlds population increasing now?Ss:Yes, the worlds population is increasing by 8
6、0 million every year.T: It really is one of the greatest problems today. I think we should do something to solve this problem.Ss:Yes.Step 2 Presentation 第二步 呈现(时间:12 分钟)1. (教师展示人才市场的图片或多媒体播放春节前各大银行排队取钱的画面，并给出一些材料，引出 1a。)T: Just now, we have known the world has a large population. Now, look at the pi
7、cture and listen to my materials about population.1. Every minute about 261 babies are born in the world.2. The worlds population is growing faster and faster.3. China has the largest population in the world.4. Chinas population has reached one fifth of the worlds population.What do you think of the
8、 picture and the materials, boys and girls?Ss: Thats terrible!T: Yes. The growing population will cause many difficulties. It will influence the development of the worlds economy. So far, some families cant offer their children a good education.(板书单词 difficulty, offer，词组 so far，要求学生掌握。)difficult(adj
9、.)difficulty(n)difficulties(n.pl)offeroffer sb. sth.=offer sth. to sb.so farT: Do you want to know other problems caused by the large population?Ss:Sure. We are short of energy and water.(教师帮助学生回答)(板书。要求学生掌握词组 be short of。)be short ofT: Yes, now Chinas population is one fifth of the worlds populatio
10、n. It means it is 20 percent of the worlds population, so China has taken some measures to solve the problem. Do you know what they are?(板书 one fifth，详解并要求学生掌握分数表示法，掌握单词 percent，理解词组 take measures to。)Ss: One is known as the one-child policy. It has worked well in controlling Chinas population.T: Th
11、anks to the policy, China is developing quickly and peoples living conditions are improving rapidly.(让学生认识到 be known as, thanks to 的用法。)(让学生读 1a，然后回答 1a 中的两个问题。)Step 3 Consolidation 第三步 巩固(时间:10 分钟)1. T: Boys and girls, please read 1a again and then retell it, according to the key words on the black
12、board. (学生阅读 1a 的同时, 教师把关键词列在小黑板上。)6. 6 million 3 billion half one fifthcause difficulties take measures to work well in living conditions seriousa long way(让两位同学看着小黑板上的关键词复述 1a。当学生表达错误时 , 教师给予纠正。当学生表达不出时, 教师或其他同学给以帮助, 以提高学生口语复述能力。)2. T: Lets look at 1b (work alone). Describe the disadvantages of Ch
13、inas large population according to 1a and write them down. You have two minutes. (给学生两分钟完成, 然后让几位学生写到黑板上。 )T: Now I will ask several students to write their answers on the blackboard.S1:Smaller places to live in. S2:Difficult to find jobs for lots of people. S3:Short of energy and water. S4:Most cit
14、ies are more crowded.S5:The traffic is heavier.S6: There will be much more pollution.S7: T: Your answers are wonderful.Step 4 Practice 第四步 练习(时间:8 分钟)1. T: Now, look at the picture. The earth is full of people. The population problem is serious. Please listen to the tape and complete the article in
15、2a. (教师拿出一张”地球上站满人”的图片或将图片展示在多媒体上。让学生仔细观察 , 然后播放录音 2a。)T: Now, look at the text by yourselves. Lets listen to the tape again and check the answers. (让学生核对完后, 一起齐读这篇短文。 )T: You have understood the text. Lets do the exercise in 2b. Then we will check the answers. (给学生一分钟, 理解 2b 中的四个句子 , 让一位学生回答。)2. (如
16、果有时间, 让学生完成一个复述性的填空。 )T: Please look at the small blackboard. Finish them according to 1a. (教师出示准备好的小黑板, 让学生把答案写在课堂作业纸上。)In 2007, the worlds population was about . More than _ _people live in Asia now. China has the largest population in the world, and about _ _of the people in the world live in Chi
17、na. A large population many difficulties. China has done something to the population. the policy, China is developing quickly and peoples living conditions are improving rapidly. T: Lets check your answers together.(在短文中呈现正确答案, 并让同学们一起朗读。附答案为：6.6 billion, three billion, one fifth, causes, control, T
18、hanks to。 )Step 5 Project 第五步 综合探究活动(时间:5 分钟)1. T: You have known so much about the population. Now, turn to Page 14 and write a letter to your pen pal about the population problem in China. The questions in 3 may help you, then I will ask some students to show their opinions. (学生们互相交流想法。)(让学生写一封信给他
19、/她的笔友, 谈谈他/她对中国人口问题的看法, 可以借鉴 3 中五个问题的说法。写的好的，可以读一小段给同学听。教师说明写信时必须注意的事项。)2. Homework:Make a survey and complete the chart, then write a survey report. You can search the information on the Internet. 板书设计：What a large population!Section Cbe short of one fifthso far difficultyoffer sb. sth.=offer sth. to sb. difficult(adj.)-difficulty(n)-difficulties(n.pl.)City Population Roads Living conditionsBeijingTokyoTorontoNew YorkYour city
