高二英语下Unit13集体备课教案Designer

1、高二英语下 Unit 13集体备课教案 Designer:曹军科Teaching Plan for Unit 13The water planetTeaching goals:1. Talk about water and the ocean2. Practice making suggestions and expressing opinions3. Review Modal Verbs4. Write an explanation paragraphTeaching Plan: (Six Periods)1st period: Teaching new words and Warming-

2、up 2nd-3rd period: Reading4th period: Integrating Skills5th period: Grammar6th period: ExercisesPeriod 1 Teaching new words &Warming up Teaching Aims and Demands:1. To get the Ss to understand the main properties of water by connecting them with some common phenomena and learning to explain the phen

3、omena.2. To enable them to be aware of the importance of water, making good use of water in a proper way and protecting water resources.Teaching Difficult Point:Talk about how to use water and protect it.Teaching Aids:Some water, some oil and a glass; blackboard and multimediaTeaching Procedures:Ste

4、p1.Lead-inAsk the Ss some questions as follows T: Water is around us and inside us. We cant go without water. Qs:Why is water so important to living things? Can you point out some of its properties or characteristics? Suggested vocabulary: Its colorless, tasteless, odorless and universal dissolvent.

5、It feels wet;It exists in three forms: liquid, solid, gas, and is cycled through the water cycle;It can absorb a large amount of heat;It sticks together into beads or drops;Its part of every living organism on the planet; etc. Ask students the names of Oceans and Continents:The Pacific Ocean, the At

6、lantic Ocean, the India Ocean, the Arctic Ocean; Asia, Africa, Europe, the North America, the South America, Antarctica, OceaniaStep2.Warming upUse the water, the oil and the glass to do three experiments. Learn more about waters properties by doing some simple experiments and learn to describe an e

7、xperiment. What property of water does each of the four experiments illustrate? What causes this phenomenon?Whats this phenomenon related to? Experiment 1 shows how air pressure causes a piece of thick paper to cling to an upturned glass of water. Experiment 2 illustrates how substances with differe

8、nt density behave when placed in the same container. Experiment 3 is an example of how water dissolves substances and objects. Experiment 4 illustrates some of the differences between salt water and fresh water.Step3.Speaking1. Pre-speaking 1) Do you agree with the saying “Without water, life would

9、not exist.”? 2) So not only you and I agree with this opinion, but also the United Nations hold the same view. And thats why we have World Water Day. Q: Is there anyone who knows when it is? Mar. 22 3) Brief background information about World Water Day: World Day for Water is established by the Unit

10、ed Nations General Assemblys resolution 47/193 of 22 December 1992. It is a unique occasion to remind everybody that concrete efforts to provide clean drinking water and increase awareness world-wide of the problems and of the solutions, can help make the difference. 4) Last year we witnessed some g

11、reat disasters such as the typhoon “Yunna” and the tsunami in the India Ocean. What a coincidence that the theme for World Water Day 2004 was “Water and Disaster”. World Water Day 2005 will be guided by the upcoming water decades theme Water for Life. It will be the starting day for this Internation

12、al Decade for Action, Water for Life.2. While-speaking1) To some extent, the existence of World Water Day also implies that human beings cannot live without water. Why? Can you tell how water is being used in our life? Give some examples.Electricity, agriculture, home use, industry, transport, enter

13、tainment, etc. 2) Look at the first picture (“electricity”) in the textbook and talk about it. The water is being used to generate electricity. Building up behind a high dam, water accumulates potential energy (势能). This is transformed into mechanical energy when the water rushes down. It is a good

14、way to use water because water is renewable green energy. It will never run out if only we use it properly and generating electricity by using water is a better way to protect the environment than others. However, it takes a great sum of money and a long period of time to build a dam and prepare all

15、 the required equipment. Since nowadays electricity has already been an indispensable part of our life, most people benefit from using water in this way.3) Group work. Divide students into several groups with six in each. Each one takes charge of one picture. When discussing each picture, please thi

16、nk about the following questions:How is water being used?What property of water enables it to be used in this way?Why do we use water in this way?Who benefits from using water in this way?Is this a good way to use water?What are some disadvantages of using water in this way?4) Pair work. Each six-me

17、mber group can be divided into three smaller ones with two in each. Make a dialogue on the basis of the results about your topics we reach, using following useful expressions:The water is being used to / for We should / could What will we do if ? If we , we can It would be better to Can you think of

18、 a better way Step 4. Homework:Recite the new words and expressions in this unit. Period 2 ReadingTeaching Aims and Demands:1. To help the Ss learn some language knowledge, patterns and language items as well as science knowledge.2. To develop the Ss ability of reading comprehension through reading

19、activities.3. To help the Ss understand why water is so important to us and what we can do to protect water.Teaching Difficult Point:1. Understand each part of the passage. 2. To help improve Ss communicative skills by introducing the proper use of “Modal verbs”.Teaching Aids: A recorder, some slide

20、sTeaching Procedures:Step1: Lead inAsk some questions to make students get to know something about water.Step 2. Fast Reading Ss read the bold words in the passage and understand the structure of the passage. How many parts are there in the passage?Ss read and get the main ideas of each part. Part 1

21、(para1): the properties of water;Part2(Para2): chemical structure of water-H2OPart3(Para3): salinity- the percentage of salt.Part4(Para4): DensityPart5(Para5): heat capacityPart6(Para6-7) Ocean motionStep 3. Careful ReadingRead the passage carefully and answer the following questions.1. What are the

22、 properties of water?Water is polar.Water is liquid at room temperature.Water has a relatively high freezing point.Water has density 1,000 kg/m3.Water has high heat capacity.2. What causes water to have such unique properties? Its molecule form / chemical structure.3. What is water molecule like?Che

23、mical structure: two hydrogen atoms and one oxygen atom.Different parts of it: a slightly positive end and a slightly negative end, so it is polar.The function of it: it causes water to be able to dissolve both solids and gases, and thats why water can break down nutrients quickly.4. Do pure water a

24、nd salt water have the same chemical structure? Does pure water have salinity? Qs: 1) Whats salinity? 2) What is sea / salt water? A mixture of pure water, dissolved gases and solids. 3) How does salinity affect water? 4) How does it affect waters weight and freezing point? The higher salinity water

25、 has, the heavier the water is. The higher salinity is, the lower the freezing point of water is.5. Salinity also has something to do with the density of water. The higher salinity is, the higher density of water is. Qs:1) What is density?2) How is density measured?3) Which is denser, water or oil?4

26、) What will happen when water and oil are in the same container? What does this phenomenon illustrate? Oil floats on water. A less dense substance floats on a denser substance.5) Does water in the same ocean have the same density? No. Denser water sinks and pushes less dense water to the surface. 6.

27、 Thats why the ocean water will never stop moving. Ocean motionQs:1) What does ocean motion mean?2) How does ocean motion work? Denser water sinks and pushes less dense water to the surface. Ocean motion helps move nutrients around and adds energy to the marine ecosystems.3) What causes ocean motion

28、? Changes in salinity and temperature.7. The temperature of the ocean water always keeps steady, making the ocean a safe and comfortable habitat. Do you know why? Water has a relatively high heat capacity.Qs: 1) What is heat capacity? 2) Whats the function of heat capacity? It determines how a subst

29、ance absorbs and releases heat; It keeps water temperature steady; It keeps the earths temperature steady.Period 3 ReadingLanguage PointsParagraph One:1. range fromto range between and 在和之间变化There are 200 boys ranging from 7 to 14 in age. Prices ranged from 5 dollars to 10 dollars. The show had a ma

30、ssive audience, ranging from children to grandparents. range over 范围包括Our conversation ranged over many subjects.2. all the way 自始至终，一直，一路上All the way back, they talked about the persons and things that they could remember at school.It is very kind of you to come all the way to see me.We stayed in t

31、he game all the way. by the way顺便一题 in no way绝不 in a way在某种程度上 in the way阻碍3.a great place to live 不定式短语作后置定语修饰表示地点的名词时, 如果这个不定式中的动词时不及物动词, 后面必须跟一个介词。如:a room to live in a home to go to注意: 如果前面的名词是place 时, 介词可以省略a place to live; a place to go Paragraph Two:1.unique “独一无二的; 仅有的; 唯一的”This is a unique

32、work of art.It is a unique opportunity for you to succeed.词组: unique to sb. /sth. 仅与一个人或一个群体或一件事物有关You should concern the special difficulties unique to blind people when building a gym.2. property n. 特性,性质(c) 财产(u)Many plants have medicinal （药物的）mon property公共财产The car is my property.

33、3. Water is actually quite simple, but the way the water molecule is formed gives water its unique properties.the way the water molecule 在这个定语从句中 the way 的前面省略了that 或in whichI dont understand the way (that / in which) he worked out the problem. 4.that is: 在句中有两个意思和用法 that is : which mean , 也可说成: tha

34、t is to say “即, 就是”He is a local government administrator, that is to say a civil servant. that is : to be specific “确切地, 具体地”She is a house wife when she is not teaching English, that is.5.The nutrients in whatever falls into the ocean will quickly become available to other living creatures. 1) a.w

35、hatever(=anything that)作为连接代词引导名词性从句，“无论什么，任何东西，一切事物”，语气比what强烈。Whatever is left over is yours.You must do whatever is best for you.Whatever book you want to read will be sent to your office.She is against whatever I am fond of. b.whatever 还有 “不管什么”的意思, = no matter whatWhatever happens, well meet he

36、re tonight. 2) available adj. 可用的，可获得的，有效的，适宜的 sth. + be + available + to + sb. 某物对某人来说是可得的The information is available to anybody.The ticket is available to you for 3 days. sb. + be + available + for + sth. 某人对来说是合适的He is not available for the job.Are you available for a meeting tomorrow? available

37、: =can be used or obtained by (指物)可用的或可得到的”. Chinese commodities available for export are varied. Im sorry, those overcoats are not available in your size.That was the only available room. = free to be seen or talked to (不太常用) (指人)可会见的,可与之交谈的The lawyer is not available now. Paragraph Four:1.If a sub

38、stance has a higher density, say 5,000 kg/m3, it will not float on water. say: suppose as an example or a possibility “设想;假定;比方说”Lets say that youre right.Say you have an accident, who would look after you?Lets that any writer, say Dickens2. take advantage of sth./ sb. 充分利用某人(某物) They took full adva

39、ntage of the hotels facilities. He takes advantage of her kindness and borrow money too often. I should like to take advantage of this opportunity to express my thanks for your help. 拓展: have the advantage of 有的优点to ones advantage 对某人有利at a disadvantage 处于不利位置to ones disadvantage 对某人不利 Paragraph Fiv

40、e:1.thus:adv. “因此;从而; 于是”, 后面跟现在分词短语,充当结果状语. 分词短语作结果状语一般置于句末，有时前面带有thus,hence,therefore等副词，表示一种“可见的”“顺理成章”的自然结果。He sold his farm, thus gaining enough money for his journey.She studied hard, thus getting high marks.He was very tired, therefore falling sound asleep.动词不定式短语也可作结果状语，一种意想不到的结果：They lifted

41、 a rock only to drop it on their own feet.3. absorb 1）vt. 吸收(水、热、光、知识、学问等)Cotton gloves absorb sweat.So many good ideas! It is too much for me to absorb all at once.He was utterly absorbed in the book. 2) be absorbed by 被吞并/为所吸收 be absorbed in 全神贯注于，热衷于I was absorbed in a book and I didnt hear your

42、call. absorb ones attention =attract ones attention4.give off （a liquid,gas,smoke or smell）散发，放出The flowers give off a delicious smell.give away 泄露，分发 give up 放弃，屈服give out 1. 发出声、光、热、信号2.分发报纸、书本等 3.筋疲力尽 Paragraph Five:1. sensitive 1)adj. 敏感的(to)；灵敏的容易生气的(about)She is sensitive to the smell of smoki

43、ng. The child is sensitive to eggs. He is sensitive about his failure. 2)（反）insensitive不敏感的 （同）reactive有反应的 3) sensible明智的，通情达理的；察觉到的Even sensible men do absurd things.He was fully sensible of his own shortcoming.senseless失去知觉的；无意义的，不明智的He was beaten senseless. 拓展 sensible 明智的， 合理的， 切合实际的I think you

44、 made a sensible suggestion at the meeting. Step 5. Homework1. Review the text.2. Recite the language points.Period 4 Intergrating SkillsTeaching Aims and Demands:1.Learn and master the following new words:budget, rate, visa, arrangement, passport, cheque, currency, sight, seasoned, accommodation2.T

45、rain the students integrating skills, especially reading and writing skills.3.Get the students to learn how to make a plan for a travel.Teaching Important Points:1.Get the students to understand the text exactly, especially the following words and phrases: rate, make ones own arrangements, seasoned,

46、 travel light, sights2.Help the students write a travel brochure well.Teaching Difficult Point: How to help the students master the ways of writing a better descriptive essay/paragraph.Teaching Methods:1.Asking-and-answering activity to check the students understanding of the text.2.Inductive and im

47、itative methods to train the students writing ability.3.Individual,pair or group work to finish each task.Teaching Aids: 1.the multimedia 2.the blackboardTeaching Procedures:Step 1. Lead-inLook at the map of China, answer these questions:Can you name the three cities marked on the map? Where are the

48、y? (Chongqing, Shanghai, Dalian )IHow much do you know about them? Is the economy there well-developed or not?Which city is the most developed? Why?Now lets look at this map and then answer the following questions:Can you tell what map it is? Where is it?Is the water here salty or fresh? Whats the p

49、lace called where river and the ocean meet?Step 2. While-reading 1. Skimming 1). Find out the definition of estuary.(An estuary is the body of water where a river meets the ocean. Salt water from the ocean and fresh water from the river mix together in an estuary. This mixing of fresh and salt water

50、 creates a unique environment filled with life of all kinds- a zone between the land and sea.)2). What functions of estuaries have been mentioned in the passage? (Great places for natures young animals clean our water by absorbing nutrients and pollutants from water coming from inland sources; provi

51、de both recreation and education for human beings.)3). Text analysis:Ask Ss to make an analysis of the main reading textNatures Nursery: EstuariesCheck the answers:Part 1. Estuary is our planets nurseryPart 2. Estuaries are great places for natures young creaturesPart 3. They help clean our water.Pa

52、rt 4. They provide recreation and education for human beings.Ask Ss to make an analysis of the main reading textLife In The Ocean2. Scan the passage and answer the following questions.1). Why are estuaries such good places for natures young ones?(In estuaries, animals can enjoy all the benefits of t

53、he oceans without having to face many of its dangers. Tides provide energy for the ecosystems, but estuaries are protected from waves and storms by islands, mud or sand. Nutrients from both the land and the ocean arrive in estuaries.)2). What does “density” mean in this passage?(It means the degree

54、to which an area is filled with things or people.)3). How do estuaries affect the water that passes through them?(They absorb nutrients and pollutants from water coming inland sources, thus cleaning our water.)4). Why are estuaries more sensitive to pollution than other areas?(Because estuaries act

55、as filters(过滤器), many pollutants end up in them.)5). Why are estuaries important to human beings?(Estuaries provide both recreation and education for human beings. For example, people can fish, swim and have fun on the beach; scientists and students have endless opportunities to study a variety of l

56、ife in the habitat. Estuaries also contribute to the economy through tourism and fishing.)Step 3. Language PointsParagraph Two1.benefit 1) vt. “对有利”, 后面接名词&代词, 但不接反身代词Exercise benefit our health.Your advice benefited me a great deal.The fresh air will benefit you.2) vi. “获益, 得益于”,后面可接from/ byWe benefit by/ from daily exercises.The plants benefited from the rain.3) n.益处, 好处(可数& 不可数) I told