Unit3Book2 Computers 主讲人 青州二中 窦桂丽
一、 教案背景 1，面向学生： 高中生 2，学科：英语 2，课时：1 3，学生课前准备：利用百度搜索有关计算机发展史的文字或图片资料。http://baike.http://www.wodefanwen.com//view/22636.htm 教学课题 Unit3Book2 Computers 【学习目标】 1、让学生了解计算机发展史及其计算机科技 2、了解计算机在日常生活的应用 3、学会如何找主题句 二、 教材分析 计算机在我们的日常生活中被广泛应用,因此了解计算机的发展史是非常有必要的.并且通过了解计算机及其科技让学生思考我们应该怎样正确利用网络.同时也通过读文章完善自己的阅读技巧. 【教学重点与难点】 重点：1、计算机发展史及其科技 2、怎样找出段落的中心句 难点：怎样阅读科普说明文。 教学方法 1.小组合作探究，不能解决的问题用红笔勾画，作出记录，便于上课老师答疑解惑。 五、【教学过程】 Step I Leading-in 用百度搜索电影Robot http://v.pps.tv/play_31KENN.html从中截取一个片段导入 让学生观看影片后提问题 What are the robots doing? 通过学生的回答总结: From the film we can see robots can help us do a lot of things do you know the former form of robots? Computers .but do you want to know How computers devoloped into robots? Then asked the students to turn to page18 Look at who am I to find the answer 导入 Step II Fast Reading 学生快速浏览文章并回答问题 Read the passage quickly and silently and then answer the following questions 1. What is the main idea of the text? 2.What is the topic sentence of each paragraph? Paragraph 1:________________________________________ Paragraph 2:________________________________________ Paragraph 3:________________________________________ 点拨技巧：topic sentence 的位置？ 先让学生通过上述找中心句方法自己说出,老师再做适当修正.百度搜索答案http://zhidao.http://www.wodefanwen.com//question/377523812.html 3.Can you put these inventions in an order according to the time when they appeared? ( )calculating machine ( )PC ( )analytical machine ( )laptop ( )robot ( )universal machine Step IV Reading for details 学生再读文章,通过回答下面问题更深入的理解文章 Read the whole passage again carefully and finish the following tasks. 1: Finish the timetable below. TIME 1642 EVENTS It began as a , which is used to difficult sums ? Computers were built as an analytical machine by Charles Babbage. At that time, it was considered a ______ _______ and the start of _______ _______. 1936 Computers worked as a universal machine to _____ difficult problem. From then on, computers grew rapidly both in ____ and ______. 1940s How big is a computer? ? 1970s The first family of computers was connected to each other. Where are computers used? And what about the applications? Now Computers become a _____ friend and helper of ____ _____. 2.Which sentence in the text is closest in meaning to the following one? The older I have grown, the smaller I have become. 3.Translate the following sentence into Chinese Over time, my memory has developed so much that, like an elephant, I never forget anything I have been told 4.What use could we make of computers in our daily life? 通过做上边三个问答题既理解了文章又练习了阅读表达的做题方式,将阅读理解与 阅读表达结合起来. Step V Further Thinking ( Group Discussion) 通过回答以上学生对文章已有较好的理解. 然后学生回答 What computers can help us do in our dailylife? 学生回答完毕后,用一系列图片展示computers 可以帮我们干的事情. 然后进一步问问题 Can you imagine what computers can help us do in the future. 学生分组讨论,讨论后老师可以展示部分答案 http://wenda.tianya.cn/wenda/thread?tid=5d753e85be4a6829&hl=zh http://fun.ccidnet.com/news/tech/2000/01/05/54_516.htm It will help us do some dangerous work which we are unwilling to do It will be helpful if we use computers in medicine(医学) It can help the disabled people It will help us do some housework It will help us to travel in space and ocean Step VI Consolidation 通过此练习学生巩固本节课所学知识 1. Retelling. Complete the passage using the words or phrases from the passage I _____ as a calculating machine in 1642 in France. In 1822 I was ____as an analytical machine. Then in 1936 I was _____ to ____ as a universal machine. As the years have___ ___, I have been made ______ . There were times when my size ______ changed. And my memory became _____ large _____ even I couldn’t believe it. In the 1960s they gave me a family_________ by a network. I was able to _________________with others _______ the World Wide Web. Since the 1970s many new applications ______________ for me. 2. Supposing that(假如)you were Mr/Mrs computer who knows much about computers and one student wants to interview you to know something about computers. Now make a dialogue between you and the student You can use this pattern Student: Hello! May I ask you some questions? Mr/Mrs computer: Ok! Student:When and where did computers begin? Mr/Mrs computer: …… Student: ……? Mr/Mrs computer：…… Student: What happened to computers in the 1960s? stepVII 课后拓展 1.课后让学生反思中学生应该怎样正确利用网络? http://www.cnki.com.cn/Article/CJFDTotal-ZXSU200901003.html 2.布置一篇与computers 相关的文章阅读 Homework Read the following passage and finish the questions Internet is very useful for us. The Internet is a great facility for collecting information. It can help us to do research. We can also learn a lot of things through surfing the internet. For example, we can even learn on our own through the internet by watching some video tapes. We can easily get news from the internet, too. Internet actually make life more convenient for us as it provides lots of information for us. Lastly, we can also play games by using the internet. Playing some games can help us to relax a bit from the busy studies. The Internet makes it easy to build social connections. we can have a lot of friends all over the world and reach much knowledge by Internet. Millions of people communicate today through E-mail. But the disadvantages of Internet also have a lot. The network has so much different information that sometimes it may make people make a wrong decision. Some people are so addicted to internet that they seldom go out to meet people in the real world which may weaken their ability to deal with relationships in the real world and the weak-willed persons maybe indulge network-game and amusement in Internet thereby disrepair own career. The loveliness of Internet is wonderful and colorful, but strengthen to manage it. We make good use of it only while we have an appropriate approach to Internet . 1. What is the main idea of this passage? 2. Write a short passage about how to use Internet in an appropiate way