1、Unit 4 Amazing ScienceTopic 2 When was it invented?SectionAThe 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 some new words:metal, toothbrush, ink, recorder2. Learn some useful sentences:Whats it made of/from? Its made of/from3. Learn the simple past passive
2、 voice:(1)When was it developed?Around 1998. (2)Where was it developed?It was developed in Korea.4. Learn how to express hopes and wishes:(1) I wish I could go into space some day.(2) I hope your dream will come true.5. Talk about new technology and inventions. . Teaching aids 教具火箭模型/牙刷/墨水/纸/录音机/小黑板
3、/MP3/各种发明的图片/魔盒. Five-finger Teaching Plan 五指教学方案Step 1 Review 第一步 复习(时间:6 分钟)师生对话，让学生尽量用被动语态叙述计算机的作用，引出生词 rocket 并导入新课。T: Boys and girls, weve learned about the importance of computers. Can you tell me something about them?S1: Computers are used by doctors to find diseases easily.S2: Robots are con
4、trolled by computers to do dangerous work.S3: In business, computers are used to place and cancel orders.S4: Spaceships are mainly controlled by computers.T: Well done! But do you know how the spaceships are sent up from the ground into the space?S4: They are sent up by rockets. (帮助学生回答。)(出示火箭模型，板书并
5、帮助学生理解 rocket。)rocketT: Look! This is a model rocket. Whats it made of? Whats it used for? Lets come to 1a and talk about it.Step 2 Presentation 第二步 呈现(时间:13 分钟)用具体实物设置情景，师生对话，学习生词和新句型。找出关键词句和目标语言，为交际积累材料。1. (师生对话，用实物引出生词，学习新句型。)T: (让学生摸一摸火箭模型) Whats it made of?S1: Its made of “金属”.T: Yes, its made
6、of metal.(板书句型及生词，并让学生掌握。)metalWhats it made of?Its made of metal.T: Do you know what a rocket is used for?Ss: Its used for sending spaceships into space.T: Yes, its used for sending spaceships or satellites into space.(板书句型并要求学生掌握，帮助学生理解 satellite。)satelliteWhat a rocket is used for?Its used for se
7、nding satellites/spaceships into space.(摸出牙刷。) T: How do you say this in English, S2?S2: Sorry, I dont know.T: OK, it is a toothbrush.(板书 toothbrush，领读并要求学生掌握。)toothbrush T: (作刷牙的动作。) Its used for brushing teeth. Whats it made of, S 2?S2: Its made of plastic.T: Very good! Youre right.(摸出墨水。) Whats t
8、his in English, S 3?S3: Sorry, I dont know.T: Its a bottle of ink.(板书，领读并要求学生掌握。)ink T: Do you know what it is used for?S3: Its used for writing.(从魔盒中摸出一张纸，做神秘状。)T: How do you say this in English, S4?S4: Its a piece of paper.T: Can you tell me its material? (让其摸一摸，看一看。)S4: Sorry, I cant.T: Let me te
9、ll you. It is made from wood. (说的时候语速要慢，重音放在 from。)(引导学生总结 be made of 与 be made from 的区别。板书并解释。)be made of + 材料：表示原材料容易被看出。be made from + 材料：表示原材料经过化学变化，不易被看出。2. (让学生不要打开课本，听 1a，回答下列问题，听后核对答案。)T: Dont open your books. Listen to the tape carefully and try to find out the answers to the questions.(出示小
10、黑板。)(1)Why is Jane unhappy?(2)Who made the model rocket?(3)What a rocket is used for?(核对答案。)3. (让学生打开课本，找出疑难句。教师出示小黑板。)Im not allowed to play computer games.Its made of metal.Its used for sendingintoI wish I could go into space some day.(解释此句使用了虚拟语气，在此只要求了解。)I hope your dream will come true.Step 3 C
11、onsolidation 第三步 巩固(时间:8 分钟)巩固 1a 及 be made of/from, be used for 的用法。完成 1b。1. (让学生打开课本，再听 1a 录音，学生跟读，感受纯正的语音语调。)T: Open the books, listen to the tape and read after it. Pay attention to the pronunciation and intonation.2. (让学生找出对话中的关键词，教师板书。然后让学生根据关键词两人对话复述 1a。)T: Boys and girls, lets find out the k
12、ey words together, OK?(板书)Janeunhappy / not allowed / be bad forKangkanga model rocket / be made of metalbe used for / satellites or spaceships / learn from/ wish/ hope/ come true3. (让学生认真阅读 1b 中的例子，然后让他们仿照例子用实物编对话，完成 1b。)T: In 1b, we can see two dialogs. Read them carefully and pay attention to the
13、 sentence patterns, “be made of”, “be made from” and “be used for”. Make similar conversations in pairs.Step 4 Practice 第四步 练习(时间:13 分钟)由一般现在时的被动语态，引出一般过去时的被动语态并加以操练。引出 2a 的内容，展开任务型活动，让学生掌握目标语言。完成 2b。1. (继续操练 be made of/from 及 be used for 的用法。)T: (老师手指录音机问。) Boys and girls, whats this in English?Ss:
14、 We dont know.T: Its a recorder.(板书生词并让学生掌握。)recorderT: Whats it used for?Ss: Its used for helping us to improve our English. (引导学生回答。)T: Yes, what is this? (从魔盒里拿出 MP3。)Ss: Its an MP3 player.T: Yes, it was developed in Korea. Its more useful than a recorder.(板书画线句子让学生观察，并与一般现在时的被动语态相比较，帮助学生总结出一般过去时
15、被动语态的构成并举例作适当讲解。)was/were+及物动词的过去分词It was developed in Korea.The bridge was built in 1990.The cup was used in old days.T: (手举 MP3。) When was it developed? And whats it used for? Lets listen to 2a.2. (放录音，听后核对答案。)T: S1, answer the questions, please!S1: The MP3 player was developed around 1998. Its us
16、ed for helping us to improve our English. Its more useful than a recorder.3. (让学生阅读 2a 对话，找出关键词，为下一步活动做准备。)T: Read 2a, and underline the key words.(板书关键词。)an MP3 player, be used forhelp us to improve our English, developaround 1998, Korea, more useful, recorder, buy4. (指导学生利用黑板上的关键词复述 2a 对话，巩固一般过去时被
17、动语态的句型。完成2a。)T: Who would like to retell 2a? S2, please!S2: Kangkang is listening to MP3. Its very nice. Its used for helping us to improve our English. It was developed in Korea around 1998. Its more useful than a recorder.T: Very good!5. (指导学生完成 2b。师生互动，提高学生口语表达能力。)Example:T: How do you say it in
18、English?Ss: Digital camera. (帮助学生回答。)(板书 digital，要求学生理解。)digitalT: When was it developed?Ss: It was developed in 1975. T: Where was it developed?Ss: It was developed in America. T: Whats it used for?Ss: Its used for taking photos. T: Do you understand? Practice the dialogs with your partner. Lets be
19、gin. Step 5 Project 第五步 综合探究活动(时间:5 分钟)利用各种发明的图片操练一般过去时的被动语态，让学生在探究中锻炼语言综合运用能力。1. (收集各种发明的图片，如传真机、汽车、火车等等，学生可以在谈论自己感兴趣的发明中不断地使用 was developed in / be made of / be used for 这些目标语言。)2. Homework:T: Please write down a short passage about your favorite invention in your exercise books.板书设计：When was it invented?Section Abe made of When was it developed?be made from It was developed be used for Where was it developed? It was developed in 学优。中-考.，网
