九年级Unit9教案3.doc
科目英语年级初三班级 时间 年 月 日课题Unit 9 When was it invented?备课组 课前的思考和准备教材分析本单元要是围绕着“Inventions”这个话题，通过熟悉我们周围经常使用发明物的历史来开阔眼界，丰富自己的阅历，使自己养成勤于思考，善于总结的好习惯；学习并掌握被动语态的有关知识：学习Mind-mapping 的阅读策略。 教 学 目 标 知识与技能 1、掌握一般过去的被动语态。2、学会谈论发明的历史，会使用以下基本句子：When was the car invented? It was inverted in 1885Who were they invented by? They were inverted byWhat are they used for? They are used for seeing in the dark.过程与方法采用Role playing和Discussion 的学习策略。充分利用多媒体等教学设备，设计与本课话题相关的情景，如不同种类的发明，人物，实物等等。围绕着本单元的教学目标，设计一些贴近学生实际的教学任务，让学生谈论身边的发明如电话、电脑、汽车、茶叶、篮球以及一些当代发明的看法；让学生根据所学知识，自己进行创新设计等等。情感态度与价值观1、通过本单元学习使学生懂得人类的科学发明创造了丰富的物质文明。2、培养学生的创造发明的能力和愿望。 重 难点 分析1. 一般过去时的被动语态结构和用法。2. 一些发明的使用以及对它们的描述。课时安排5课时第一课时：Section A:1a,1b,1c,2a,2b,2c第二课时：Section A:3a,3b,4第三课时：Section B:1a,1b,2a,2b,2c,3a第四课时：Section B:3b,4a,4b and Self check 第五课时：Reading教 学媒 体多媒体 教学内容和过程设计 环节 教学过程学生活动教学意义 Step 1Warm-up Step 2Presentation Step 3practice Step4 Sum up Step 5Homework. Section A 1. A contest: Guess who is he (she)? Teacher tells a story of a person and asks students to guess who he/she is.He was from America. He was one of the greatest inventors in the world.He was clever but he was in School for only 3 months.His mother taught him to read and write.He build his own chemical lab when he was a boy.His first invention was the automatic telegraph repeater(电报自动转发器) . He has many inventions in his life and some inventions have changed the world.2. Talking about: The four greatest inventions in China.Teacher show some pictures of the four greatest inventions in China and talk about them with students. 1. Learn some new words and expressions.2. Groupwork: Section A 1a. Ask students number the inventions according the order they were invented.3.Grammar:The passive voice. (1)The uses of the passive voice. (2)The structure of the passive voice. (3)How to change into the passive voice. 1.Listening practice 1b. Listen and match the inventions with the dates.2. Pairwork 1c. Talk about the inventions in 1b like this:A: When was the telephone invented?B: I think it was invented in 1876.2. Listening practice2a. Listen and number the inventions in the order. Languages points: “be used for”Eg: Telephone is used for talking with people.2b. Listen and match the inventions with their inventor and uses.2c: pairwork: Role play conversations using the information in 2b. 1. Look through the grammar focus.2. Go over the whole lessons. Finish the task: Ask some students to read about an invention using an encyclopaedia or other book from the library, or by looking up information on the Internet. Have the students write up a short report and draw a simple picture of the invention or bring in a photo of it. Guess and find the answer. Look and talk about the four greatest inventions in China. Group work. Listen and finish the task. Read and remember. Researchand write 通过竞赛活动活跃课堂气氛；并为下面的教学活动做铺垫。 激发学习兴趣，培养民族自豪感。 了解被动语态的用法。 训练听力，提高听力水平，掌握语言目标。 运用所学，巩固语言目标，开拓学生思维,养学生综合运用语言的能力。教后反思 环节 教学过程学生活动教学意义 Step 1Warm-up Step 2practice Step 3Consolidation and Extension Step 4 Exercises Step 5Sum up Step 6Homework Period 2 1. Greetings.2. revision:Show some pictures of inventions and talk about them.A: What is it in English?B: ItsA: When was it invented?B: It was inventedA: What is it used for?B: It is used for 1. Learn new words:useful, annoyingAsk students to give some examples to show what each word means. For example, A vacuum cleaner is helpful. A very loud truck is annoying.2. Pair work3a.Make a list of five helpful inventions and five annoying inventions. Then teacher can ask students to tell the reasons.T: Is the light bulb useful or annoying? S1:I think its useful.T: Why is it ?S1: Well, it gives people more time to work and play every day.3b. Discuss the opinions about some inventions with the partner like this: A: What do you think is the most helpful invention?B: I think the most helpful invention is the light bulb.A: Why is that?B: Well, it gives people more time to work and play every day. Group work4Imagine that you are alone on a tiny island. Choose five inventions you would like to have on the island with you. Tell the group what you chose and why.Maybe you can use the following drills.Id like to have a because I couldIts used forI think the most helpful invention is But thats not going help you leave the island. I think it would be better to leave Fill in the blanks with the words given:1.The work _(finish)tomorrow morning.2.The books must_(give)back on time.3.I think the telephone _ (invent) in 1876.4.Tea may _(invent) by accident.5.The ruler _(use )since I began my school life.6.The bikes are used for_(ride)on. Go over the whole lessons. 1、句型转换。（1）She was seen to come out of the library by him.(变为主动语态)He out of the library.（2）When are trees often planted?(变为主动主态)When people often ?（3）The League founded in Guang zhou in 1992.(就画线部分提问) the League ?（4）Did the students wear the school clothes a lot?(变为被动语态)the sclool clothes a lot?（5）Kate took good care of the baby yesterday evening.(变为被动语态)The baby well by Kate yesterday evening.（6）His aunt bought him a bicycle.(变为被动语态)A bicycle him by his aunt.2、汉译英。（1）计算机是何时发明的？ （2）谁发明了计算机？ （3）计算机是用来做什么？ （4）你认为什么是最有用的发明？ （5）它能够给人们更多时间工作和玩。 Watch and talk. Watch and learn Speaking practice Pair workDiscuss with the partner. Research and speak. Finish the exercise. Finish the work after school. 展示图画，刺激学生视觉感官，激发学生学习积极性,复习所学语言知识 训练听说；同时进一步让学生表达自己对创造和发明事物的认识和看法。 让学生运用所学，复习旧知识，巩固新语言目标，开拓学生的思维，培养学生在解决实际问题的能力。 巩固语言知识，培养运用能力。 检查学生掌握知识的程度，提高应用能力。 巩固所学知识点，提高语言运用能力。 教后反思 环节 教学过程学生活动教学意义 Step 1Warm up Step 2Presentation Step 3practice Step 4Practice Step 5Sum up Step 6Homework Period 3 1. Greetings.2. Free talk:Ask the students to practices talking to each other about some inventions.A: What do you think is the most helpful invention?B:I think the most helpful invention isA: Why do you think so?B: Well, it gives me 1. Show some pictures of food and drink. Ask students what they are.Then ask the students to describe how food tastes. Learn some new words: sweet, crispy, salty, sour, delicious, hot, awful, nice2. Finish the task: 1a and 1b 1. Listening brainstorm: (1)Let students describe how potato chips taste and describe how helpful the potato chips.(2)Ask: When and where were potato chips invented?Who were potato chips invented by?How were potato chips invented?(Let students guess according to the following key word.)Key words: by accident, customer, restaurant, by mistake.2. Listening practice2a. Listen and circle “T” or “F”.2b. Complete the sentences. Languages points: in the end by mistake by accident according to3. Pair workFinish the task of 2cA: Do you know that potato chips were invented by mistake?B: I dont know.A: They were invented by a chef called George Crum.B: When was that? A: It was invented back in 1853.B: Was it an accident?A: A customer sent back his plate of fried potatoes because they were cut too thick. George cut the potatoes really, really thin. And he cooked them for a long time until they were crispy. He sprinkled lots of salt on them so they were really salty. B: Did the customer loved them?A: Yes, they asked for more. Everyone was ordering thinly-sliced, crispy, salty potato chips.B: We like them, too. A: So do I. Reading practice1. Listen to the passage first.2. Give students a few minutes to read the passage and try to find the answers to the questions.3. Explain some language points. Go over the whole lessons. 用动词的适当形式填空。A: When the Dinosaur World (build)?B: It (build)in 1988.You will see many kinds of dinosaurs in it , Shall we go to see them?A: Yes, Id love to . But where is the entrance?B: Here, this side door is (use)as an entrance. Theres something wrong with the front door. Its (lock).A: Wow, these must be dinosaur eggs. Where they (discover)?B: They (discover)in Sichuan Province.A: When these must be dinosaur eggs. Where they (discover)?B: They (discover)in Sichuan Province.A: When these eggs (lay)?B: I dont know. That must be millions of years ago. Talk to each other. Watch and learn. Think and answer questions. Listen and finish the task. Pair workRole play the conversati-on. Listen and read, find the answers. Finish the homework. 通过口语练习，激发学生学习积极性，让学生在轻松好奇的氛围中复习上节课的目标语言，又引出新课。 以旧知识新引入新单词。培养学生自主学习的能力。 通过问题让学生对对话有整体了解，为听力练习做好准备；又培养学生的注意力，想像力，观察力。 培养听力能力，熟悉语言目标。 培养说的能力，掌握目标语言。 通过听力练习和阅读练习让学生明白这些发明对生活的帮助和对生活质量的提高与认识。 巩固所学知识，培养运用能力，掌握反馈信息。 教后反思 环节 教学过程学生活动教学意义 Step 1Warm up Step 2Writing practice Step 3Practice Step 4Selfcheck Step 5Consolidation and Extension Step 6Sum up Step 7Homework Period 4 1. Greetings.2. Free talk Show some pictures of inventions and ask students discuss pictures and something about what he/she would like best in class. 1. Read the instructions to the class and make students look at the sample first sentence of 3b.2. Explain that students can combine more than one point into one sentence.3. Ask students to finish in oral English. Teacher can give an example.The flying disk was invented by college students. They used a metal pie plate from a bakery in Bridgeport, Connecticut. Students ate the bakerys pies and then threw the pie plates. Today, there are flying disk clubs, magazines and a festival.4. Ask students to finish them in their exercise books after class. Pair work: A successful businessperson.Imagine you are a businessperson. Ask your friend questions about his or her invention. Try to sell your friends invention to the class. For example:A: This is special pen was invented by Zheng Jie. It has three colors and it is used for 1. Fill in the blanks with the correct word given then make own sentences with these words.2. Show some pictures of inventions. Ask students to have conversations in pairs. For example: A: What is it ?B: Its an abacus. Umbrella/a binoculars, camera, bicycle.A: What is it used for?B: Its used forA: Oh, thats cool! Who was it invented by?B: It was invented byA: What would you like best?B: Id likebest.3. Finish the writing task after class. Crazy InventionsAsk students to build their own crazy inventions using paper, cardboard and other materials they may have at home. Have them bring their inventions to class and say something in class next class. Go over the whole lessons. Finish the writing task of Section B 3b and Selfcheck 2. Watch and have a talk with each other. Complete the writing task in oral English. Pair work, role play in front of class. Fill in the blanks. Have conversations in pairs. Finish the writing task. Build the inventions and write something about the inventions. Go over and try to remember the language points. 通过图片和句型，激发学生练习口语的积极性，让学生在轻松好奇的氛围中认识人类的科技进步。 运用所学目标语言为学生提供写作练习的机会，提高学生运用语言的能力。 培养学生的合作交流意识以及创新能力，提高运用目标语言的能力。 进一步了解被动语态的用法；提高学生的口头表达能力。 培养学生综合运用语言的能力。 通过综合性的活动，培养学生的创新能力来达到情感，态度，价值观的课堂体现。 教学反思 环节 教学过程学生活动教学意义 Step 1Warm up Step 2Practice Step 3Presentation Step 4Reading practice Step 5Sum up Step 6Homework Step 5 1. Greetings.2. Free talk Talk about some sports in China, especially some popular sports, such as Ping-pong ball, basketball, swimming and so on. For example: A: Do you like sports? B: yes, I do. A: Which sports do you like best? B: I likebest.A: Why? B: Because? Section 1 Before you read.Pairwork: Show some pictures of sports in China. Rank the sports in the order of popularity. 1. Give students a few minutes to read the passage Do you know when basketball was invented? And ask students to finish the task of Section 3 3a. 2. Learning strategy: Mind-mapping.3. Try to answer the following questions with the help of the mi
