[高中二年级Lesson 90 Reading] 高中二年级数学.doc

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1、最新高中二年级Lesson 90 Reading 高中二年级数学Lesson 90 Reading Lesson objectives:1Students will be able to skim and scan the passage to have a good understanding of the knowledge of telephones.2Students will be able to develop their abilities of comparing, concluding and imagining.Teaching aids: a computer, etc.

2、Teaching procedure:APre-reading1RevisionUse the information from Lesson 89 about telephoning to complete some short dialogues:1) -There is no Tom here. -_.2) -_ Tom? -Yes, please. 3) -Is this a convenient time? -_. 4) -_. Someone wants to use the phone. -Ok, all the best. Bye. (Im sorry. I think I d

3、ialed the wrong number/ would you like a word with; Hold on. Ill go and get him/ sure, go ahead/ Ill have to go now.) After doing this, you may ask Ss to make a similar dialogue to Lesson 89: You want to call a friend to borrow a book, but first you dialed the wrong number. Encourage Ss to practice

4、their spoken English.2PresentationUse the following two situations to let Ss have a discussion about what is the most convenient communicative way to prepare the students to read the passage of Lesson 90:1) You want to find out if a friend is free to come to the cinema with you. 2) You want to wish

5、a friend good luck for an important exam. You may wish to use a period of video tape in which a woman is using a telephone to arrange an appointment quickly. Then show some pictures of telephones of different periods to give Ss an impression that the old telephones are not so smart and convenient as

6、 todays so as to arouse Ss interest.BWhile-reading1The first time the students read the article on SB Page 62, they will skim it. Say please read the article quickly. Try to finish it in two or three minutes. Do not worry if youve do not understand each word. When youve finished, answer the two gene

7、ral questions at the top of Page 62. (By thick, heavy, metal wires; By satellite, by very thin glass pipes.)2Now the students read the passage again. This time, pide the text into two parts (P1-3: old telephones; P4-5: modern telephones) and deal with them separately. To the first part, you may ask

8、the following questions: Why were telephones not popular at the beginning? / Why were telephones expensive at the beginning? / Why did you have to wind the handle before making a call? / What did the telephone operator do? / What do you call a book containing all the customers telephone numbers (It

9、was difficult to hear people over long distances. / The wires which carried the telephone conversations were thick, heavy and expensive. / To produce electricity. / She connected the two numbers and made a note of the length of the telephone call and the charge. / A telephone directory.To the second

10、 part you may ask some other questions: What are satellites used for? / What is the problem with electrical signals? / Why are light signals better than electrical signals? / How is a persons voice sent to another one? (For sending telephone signals over long distances. / The problem with electrical

11、 signals is that they get weaker and weaker as they travel along metal wires. / They travel long distances without getting weaker and their signal is clearer. / A persons voice is changed into electrical signals. These electrical signals are turned into light signals which are sent down the thin “pi

12、pe”. At the other end, the light signals are received and changed back into electrical signals and finally sound. )3Now the Ss read the short passage about The Telephone in the Office on SB Page 63. To test their understanding, let them translate them into Chinese. (Conference calling电话会议Dialing缩位拨号

13、Redirection转移呼叫Call waiting 呼叫等待). 4Now let the Ss deal with the new words in this lesson. You may use pictures to help Ss understand and use the new words. ( Ex. V in AB) 1) Iron and steel are kinds of strong building materials. The storm started on the way, but I had no strength to gofor a raincoa

14、t. We are making efforts to strengthen the relationship.2) If something happens frequently, it happens often. He paid frequent visits to me while he was staying here. The baby was fed frequently.3) To save time and money , he hired bicycles for traveling when he was in the country.4) He looked up an

15、d saw a snake wound around a panch. The rivers wind their way to the sea. 5)Where does Zhongshan Road connect with Zhujiang Road? The two cities are connected by a railway line.The police thought the man connected with the murder.CPost-reading1Give Ss several minutes to prepare to retell the two par

16、ts of the text according to some given key words.(Ex. VI in AB) (old telephones) long distances difficult wires thick, heave, expensivemake a call wind a handle / electricityoperator connect / note of length / charge telephone directory 1878 / one piece / one side 18772, 600 1900300,000 000(modern t

17、elephones) great advances last quarter of the 20th Century radio waves satellite electrical signals weaker / strengthen 3-4 km light signals 150 km clearer glass pipes 1 mm / send light signals soundelectrical signalslight signalselectrical signalssound2Here Ss may find some situations to judge which modern ways of te12下一页 推荐访问:高中二年级lessonReading高二英语必修五教案高二英语英文教案 第 6 页 共 6 页