七年級(jí)英語(yǔ)上冊(cè)《Chapter4 The world of numbers》教案 牛津版

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1、七年級(jí)英語(yǔ)上冊(cè)《Chapter4 The world of numbers》教案 牛津版 The first period: words preparation Teaching aims: 1. Introduce the words of different kinds of numbers 2. To read out all kinds of numbers and symbols Teaching Difficulties: How to read out the different kinds of numbers correctly and tell them by

2、listening Teaching focuses: 1. Help students to master the new words. 2. Help the students to know something about the language of numbers Teaching aids: some paper with different groups of numbers, a tape recorder and multi-media. Teaching procedures: Step1 Lead-in and revision： Encourage st

3、udents to speak out at least three things that can be understood by all human beings with different language: music , painting, food ,numbers Activity1: ask all the students to stand up and count the numbers one by one. Each student has a chance to say “pass” and “backwards”. Activity2: the teache

4、r say :”Page X”, all the students find that page aas quickly as possible. Then the students work in groups of four. Step2: word study Task 1:Teach new vocabulary of numbers by showing students some groups of numbers and ask them to find out the rules Cardinal numbers and ordinal numbers Odd numb

5、ers and even numbers Numbers showing degrees Decimals Fractions Percentages Symbols Task 2: page 44 A Match the words with the signs and numbers Task 3: Teach students to read out Numbers showing degrees, Decimals, Fractions , Percentages Symbols Step3 : Listening Page 48 A Step 4:

6、Teach the way of saying “＋,－, ×,÷” Task 1: say the followings in English: 7＋8=15 5×7=35 29－17=12 80÷4=20 Task 2: choose any to pieces from the cards, ask the studen

7、ts to make the result 10 by using “＋,－, ×,÷”. (the cards J, Q, K are “0”) Homework Exercise book :vocabulary ABC The second period: Vocabulary Teaching aims: Master all the new words in this unit. Teaching difficulties: The spelling of new words. Teaching aids: The multimedia and the black

8、board Teaching procedures Step 1: write down “0” on the blackboard, talk about it and present: ancient numbers, consist of , Indian, develop, invent, invention... show pictures of an abacus and an electronic calculator and a puter Talk about them and present the new words: invent inve

9、ntion abacus calculator accurate ... Step 2: Ask the students to finish Part C1, PartC2 PartC3. Part D Part E plete each task individually first and then discuss in groups then in the class. Step3. Further study. Learn more ex

10、pressions about different usage of numbers. 1.房號(hào)： 1103 ---- Room 1103 2.班級(jí)、年級(jí)－－ Class 6, Grade 9/Form Three 3.時(shí)間： 6：50－－ six fifty; ten to seven 4.年、月、日： 1986/12/6--- December the sixth, nineteen eighty-six 5.溫度： 36°C－－thirty-six Celsius degree 6.序數(shù)： 12th －－ twelfth 14th ——fourteenth S

11、tep4: More activities Activity1; work in groups of four, one student say some numbers from 1 to 1oo quickly, the others write them down as quickly as possible. Activity2; work in groups of four, one student say some numbers from 1 to 1oo quickly, the others circle them on a piece of paper w

12、hich is full of different numbers as quickly as possible. Activity3; fill in the blanks with appropriate numbers. two，five，eight，eleven，fourteen，______ , twenty two，four，seven，eleven，sixteen，______ , twenty-nine three , four, seven, eleven, _______ four , nine, ______ twenty-five

13、 Homework: Exercise book :vocabulary D The third period: reading Teaching Aims: 1.Learn about numbers from the old world to the present world 2.Train the students’ reading ability. Teaching Important Point: 1.Improve the students’ reading ability. 2.Develop the students’ cre

14、ative, prehensive and consolidating abilities. Teaching Difficult Point: 1.How to improve the students’ reading ability. 2. The use of some useful expressions about numbers Teaching Methods: Individual, pair or group work to make every student work in class. Teaching Aids: The multimedia and

15、 the blackboard Teaching Procedures: Step 1 Presentation 1． Ask students how much they know about the world of numbers. 2． Show some pictures of different kinds of calculating machines to the students to arouse their interest. Step 2 Look and think Read the title, its subtitle, the headings a

16、nd the pictures. Then on the list below, tick the tings you think the article may tell you. Step 3 Reading 1. Give the students some questions about the text. 1. How many kinds of calculating machines are there in the text? 2. What are they? 3. Who first invented and developed the system 1 to

17、 9 system? 4. Was Zero invented first? 5. Step 4. Find out the fact in Part D & E 1.Li: Everyone knows it. May : Knows what? Li: The language of numbers. 2.Li: ______________. 3. Li: ______ ________ 4. Li:____________ 5. Li:____________ 6. Li:______________________. 7. Li:____

18、________ 8. Li:____________ Step 5 Consolidation and homework: 1.Read the whole article after the tape. 2.Copy the new words in the article 4 times for each. And memorize them by heart. Step 6 homework Exercise Book : Reading The fourth period: language Teaching Aims: 1. Learn about

19、giving orders or instructions. 2. Train the students’ language ability to use cardinal and ordinal numbers Teaching Important Points: 1. Improve the students’ language ability 2. Enable the students to master the words and grammar 3. Develop the students’ creative, prehensive and consolidating

20、abilities. Teaching difficult Points: 1. How to improve the students’ language ability. 2. How to use imperative sentences Teaching Methods: 1. Individual, pair or group work to make every student master the knowledge. Teaching Aids: The multimedia and the blackboard. Teaching Procedures:

21、 Step 1: Further study of the passage. Task 1: Work in pairs to find out the phrases from the passage. 1.在古代 in ancient times 2 以不同方式 in different ways 3由…組成 consist of 4從…到… from …to 5數(shù)字系統(tǒng) system of numbers 6計(jì)算機(jī)器 calculating machines 7在算盤上 on the abacus

22、 8電子計(jì)算器 electronic calculators 9進(jìn)行計(jì)算 do calculation 10短時(shí)間內(nèi)/迅速 in a flash 11 能夠 be able to do 12 在你一生的時(shí)間里 in your whole life 13下面的故事 the following story 14解決問(wèn)題 solve the problems 15 夠強(qiáng)大 powerful enough Step 2: Explain some key sentences from the passage 1. In ancient

23、 times, people wrote numbers in different ways. 2. However they nearly all counted in tens. 3. The system of numbers today consist of the number from 1 to 9and 0. 4. Abacus are so fast and accurate that people still use it today. 5. A puter can so a calculation in a flash. 6. She has an amazing

24、 brain and can calculate like lightening. Step 3 Practice reading 1.Ask the students to read the key sentences above after the teacher. 2.Ask the students to read the whole passage after the tape and then together. Step 4 Language 祈使句 : 是表示請(qǐng)求、命令、建議等句子，通常稱為“無(wú)主句”。說(shuō)話的對(duì)象是第二人稱you, you常被省略。

25、 結(jié)構(gòu)如下： 肯定：(Please) V. + O… 否定：(Please) Don’t ＋V. + O… ?以let 引導(dǎo)的祈使句。 ?E.g. Let’s go fishing. ? Let us go out for a walk. 注意祈使句的反意疑問(wèn)句：一般以will you, won’t you結(jié)尾。但是以let 引導(dǎo)的祈使句的結(jié)尾要注意. Let’s…shall we/shan’t we? Let us…,will you/won’t you? e.g. Don’t interrupt me, will you?

26、 Let’s describe the museum, shall we? Let us go outside, will you? Step 5 Learn some expressions about calculation. Add …and… /…plus… Subtract…from…/…minus… Multiply…by…/ …multiplied by… Divide…by…/ divided…by… Step 6: cardinal and ordinal numbers Part C Step 7: speaking up

27、 Homework: Exercise book: sentence patterns & grammar The fifth period: Do some exercises: I. Choose the best answers. 1. —Call me when you get home. —OK, ____. A. I must B. I can C. I will D. I may 2. Jim, _____ me a hand. A. gives B. is givin

28、g C. give D. will give 3. Let me ____ on duty today. A. am B. / C. be D. do 4. Let's ____ our time. A. not waste B. no wasting C. not to waste D. no waste 5. —____ higher, and you will see the house. —OK. A. If you st

29、and B. To stand C. When you stand D. Stand 6. _____ forget to write to me when you _____ get there next Tuesday. A. Don't; will B. Please; will C. Please; / D. Don't; / 7. Please ___ do it. A. he B. he let C. let

30、him D. him 8. ____ e in, please. A. Will B. Do C. Won't D. Did 9. _____ careful! A. Be do B. Do be C. Not D. Not do 10. _____ let anyone open the door. A. Don't B. Will C. Not D. No 11. Let John finish t

31、he work all by himself,_______? A. shall we B. will you C. do you D. do we 12. Let’s go home, shall we? _________. A. That’s right. B. That’s all C. That’s all right D. All right II. say out the some numbers as required: even number odd number

32、percentages numbers showing degrees decimal numbers IIIClassify the following numbers 0.54 50% 213 420 40° 3/5 79 40 25° 3/7 17 1,000 76% 75% 852 7.7 21.13 160 ° 7/9 57.22 27 6.5 xx 32.5 ° 1.Even numbers______________________________ 2.Odd numbers_______________________________ 3.Fractions__________________________________ 4.Percentages_________________________________ 5.Numbers showing degrees_____________________ 6.Decimal numbers____________________________