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Unit 4 Amazing Science Topic 3Section C（教學設計）
Ⅰ. Material analysis
本課主活動是1a和2。1a介紹了電腦在各行各業中的作用，也提醒了學生要合理地利用電腦和網絡。在這個信息爆炸的時代，學生很容易迷失方向，辨別信息的真假尤其重要。1b既可以通過提綱式結構來鞏固1a的內容，也可以讓學生學習在寫作中運用這種方法來草擬提綱。2這個寫作任務，可以讓學生充分發揮想象，如果沒有了電腦，生活會變成什么樣子。這從另一個角度讓學生感受電腦對我們生活的重大影響。為了能讓學生有足夠的時間來完成這個任務，建議留作家庭作業。
Ⅱ.Teaching aims
1. Knowledge aims：
掌握本課的重點詞匯和短語，繼續學習定語從句。
2. Skill aims:
能夠通過1a的pre-reading 任務來預測1a的內容。
能夠借助1b的提綱復述1a的內容，并把這種提綱式的結構運用到寫作中。
能夠快速找到段落的中心句、辨別論證句。
3. Emotional aims: (optional)
電腦和網絡是個雙刃劍，在利用它來服務于生活、學習的同時，不能沉溺于游戲游戲，并且要自覺遠離不良信息的誘惑。
Ⅲ. The key points and difficult points
1. Key points:
Words and phrases: doubt, tiny, inside, brain, cancel, connect, no doubt, normally, for instance, besides, properly, be useful in,with the help of, for example, keep sth/sb. doing, place orders, thanks to, come into being, instead of doing sth.
Sentences: There is no doubt that computers are very useful in technology and business.
For example, tiny computers which are inside patients’ bodies can keep their hearts beating normally.
In factories, robots are controlled by computers that are like human brains.
Grammar: Attributive clause
2. Difficult points：
In space, computers have been used to control the speed and direction of a spaceship.
Besides, not everything we read on the Internet is true or good for us.
Computers help us at work and at home, but they must be used properly.
Ⅳ. Learning strategies
通過標志詞，如：for instance, for example, besides來找到屬于舉例子的句子。
能夠根據經驗快速識別文段的中心句。
能夠根據pre-reading的任務來預測文章的內容。
Ⅴ. Teaching aid
小黑板/圖片/ppt等。
Ⅵ. Teaching procedures
Stage(time period) Interactionpatterns Teacher activity Student activity Remarks
1 Revision(3mins) Pair work Encourage the Ss to exchange their HMK with their partners, and check the answers by themselves.T: Hi, class! Nice to see you again. In the last period, I asked you to make up five sentences. Have you done them T: Fine. Then exchange your sentences with your partners and check the answers by yourselves. If you finish, put up your hand.T: Now, I’ll choose some pairs to show your sentences. xxx and xxx, please.T: Another pair Exchange HMK with their partners and check the answers by themselves.Ss: Yes.S1: The Great Wall which/that was built in ancient China is regarded as the symbol of Chinese nation.S2: The girls who/that are dancing in the gym are from Class Six.S3: …S4: … 對于學生出現的錯誤，老師要馬上指出來，以降低后面的學生犯同樣錯誤的機率。
2 Pre-reading(7mins) Individual workClass activity Step1: Let the Ss tick the fields we use computer in.T: As we know, computers are now widely used. Now, turn to page 101. You can see many fields in 1. Please tick the fields we use computers in.T: xxx, which fields have you ticked T: How about you, xxx T: But do you know what the seventh word means T: It means“leisure”. Do you know“leisure” T: Quite right. Now, class, follow me, “entertainment”.Step 2: Encourage the Ss to give an example of the use of the computers in one of the fields mentioned in 1.T: There is no doubt that computers are very useful. So I’d like you to give an example of the use of the computers in one of the fields mentioned in 1. Can you, xxx T: Good idea! Next one T: Yes. I like shopping on the Internet. The goods are cheap, so I often place orders in Taobao. And sometimes, if I don’t want the goods, I can cancel the orders. T: Computers have become very important in many areas of work and leisure. You can find more information in 1a. Tick the fields we use computer in.S1: AllS2: Me, too.S2: Sorry, I don’t know.S3:休閑、娛樂。Ss: entertainmentGive an example of the use of the computers in one of the fields mentioned in 1. S1: I think computers are useful in education. We can use them to search for helpful information. S2: In business, we can do some shopping on the Internet.S3: …S4: … 老師要利用點評的機會講解新詞：doubt, cancel。
3 While-reading(10mins) Individual work Let the Ss read 1a, underline the topic sentence of each paragraph and do 1b. Check the answers.T: Now, let’s read 1a. You will learn about computers. You have two tasks while reading. One is to underline the topic sentence of each paragraph; the other is to complete the diagram in 1b. Pay attention to the expressions as “for example, for instance, besides”. They are usually used to give examples. When you finish the two tasks, please raise your hand.T: Now, let’s check the topic sentences first. xxx, what’s the topic sentence of paragraph 1 T: Yes, you got it. Paragraph 2, who T: Very good job. Now, let’s check the answers to the diagram. One student for one point. xxx, can you try the first point T: Up to now, I think you have learned a lot about the use of computers, haven’t you Read 1a, underline the topic sentence of each paragraph and do 1b. Check the answers and finish 1b.S1: Since computers were …and leisure.S2: Since the Internet…too.S3: Computers have improved…, too.S4: control the speed and direction of a spaceship.S5: find diseases easilyS6: …Ss: Yes. 不要擔心沒有解決新詞就讓學生完成任務。其實1b就是文章的大意。就是要培養學生獲取信息的能力。另外要學生注意表示舉例子的詞語：for example, for instance, besides 等。
4 Post-reading(20mins) Individual workClass activityGroup work Step 1: Let the Ss read 1a again to find the new words and attributive clauses.T: Now, let’s read 1a again. You should circle the new words and underline the attributive clauses this time. When you finish, put up your hand.T: There are five attributive clauses in this passage. See how many you have found. Who wants to have a try T: Marvelous! You have found four of them. Where is the last one T: It’s here! Turn to page 102. Look at the sentence “Besides, not everything we read on the Internet is true or good for us”. In fact, there is a “that” after “everything”. In this clause, the relative pronoun “that” acts as the object of the verb “read”. In this case, the relative pronoun is usually omitted.Step 2: Let the Ss learn the new words by word formation or synonyms: in+side=inside, normal(adj.)+ly=normally(adv.), work+place=work-place, proper(adj.)+ly=properly (adv.), tiny=very small, connect=join… together, for instance=for example, besides=what’s more=moreover =in addition.T: Now, try to guess the meaning of the new words and then turn to the vocabulary list to learn the pronunciation.Step 3: Let the Ss read 1a again and discuss in groups to find the difficult and key points.T: We have read the passage twice. Maybe some of you still have some problems. Now, read 1a again and discuss in groups to find the difficult and key points as well. When you finish, put up your hand.T: First, let’s solve the difficult points. Which group first T: “There is no doubt that…”is a useful pattern. It means “It’s certain that…”. Who can put it into Chinese T: Brilliant! That’s it.T: Any other questions T: They are not exactly the same. Look at the example “What other sports do you like besides football ” and “I like all sports except football”. The first example means “He likes football, too”, but the second example means “He doesn’t like football at all.” Have you got it T: You are right. T: There are many useful expressions in this passage. Group 1, please speak out what you have found. Read 1a again to find the new words and attributive clauses.S1: For example, tiny computers which are inside patients’ bodies can keep their hearts beating normally. S2: In factories, robots are controlled by computers that are like human brains.S3: ..S4: …Ss: Sorry, we don’t know.Learn the new words by word formation or synonyms.Read 1a again and discuss in groups to find the difficult and key points.S1: How to understand “There is no doubt that…in business S2: 毫無疑問……S3: besides 是“除了”，except 也是“除了”，它們兩個一樣嗎？S4: 我的理解是“besides”是包括在內，“except”是不包括在內。S5: in many areas of .., with the help of…, for example, for instance, …S6: keep sth/sb. doing sth, place orders, come into being,…S7: thanks to, instead of doing sth., at work,… 對于文章末尾出現的新形式的定語從句，老師可以提一下。并指出關系代詞“that”被省略了，因為它在從句中作賓語。當學生找出新詞后，老師要按照構詞法、近義詞或反義詞來歸類讓學生學習。對于本課內的詞組辨析，不一定都要在本次課內解決，也可以放一點在講解作業時處理。如：for example和for instance, besides 和except。
5 Summarizing and assigning homework (5mins) Class activity Step1: Let the Ss retell the main content of 1a according to the diagram in 1b.T: Up to now, we have learned much about computers. Now, let’s retell the main content of 1a according to the diagram in 1b. Get ready. Go!Step 2: HMKLet the Ss read the instructions in 2 and write a short passage with the given title.T: Now, computers are becoming more and more important in our life. Can you imagine what the world would be like if there are no computers one day Read the instructions in 2 and write a short passage with the title “One Day Without Computers” after class. Repeat the content of 1a according to the diagram in 1b.T&Ss: In space，computers are used to control the speed and direction of a spaceship. In hospitals, computers help doctors to find diseases easily. In factories, the robots which are controlled by computers can do some dangerous work …. 在復述課文時，老師要引導和帶動學生。不要求和課文一模一樣。
Ⅶ. Blackboard design
China is the third nation that sent a person into space.Section C
Words and phrases：doubt tinybrain cancelin+side=insidenormal+ly=normallyentertain+ment=entertainmentwork+place=workplaceproper+ly=properlyfor instance=for example Grammar：attributive clause :關系代詞做主語（不能省略）關系代詞做賓語（常省略）
Sentences：There is no doubt that computers are very useful in technology and business.For example, tiny computers which are inside patients’ bodies can keep their hearts beating normally.In factories, robots are controlled by computers that are like human brains.Besides, not everything we read on the Internet is true or good for us.
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