高二英语下 Unit 13集体备课教案 Designer.docx

1、高二英语下 Unit 13集体备课教案 Designer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: Tea

2、ching new words and Warming-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

3、learning to explain the phenomena.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 multi

4、mediaTeaching Procedures:Step1.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, odorle

5、ss and universal dissolvent. 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 Con

6、tinents:The Pacific Ocean, the Atlantic 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 exper

7、iments and learn to describe an experiment. 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 illus

8、trates how substances with different 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

9、saying “Without water, life would 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 fo

10、r Water is established by the United 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

11、. 4) Last year we witnessed some great 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

12、 starting day for this International 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, h

13、ome use, industry, transport, entertainment, 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 t

14、he water rushes down. It is a good 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

15、time to build a dam and prepare all 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

16、discussing each picture, please think 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 wa

17、ter in this way?4) Pair work. Each six-member 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

18、can It would be better to Can you think of 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

19、 of reading comprehension through reading 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 ve

20、rbs”.Teaching Aids: A recorder, some slidesTeaching 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 a

21、nd get the main ideas of each part. Part 1(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 answ

22、er the following questions.1. What are the 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 / chemi

23、cal structure.3. What is water molecule like? Chemical 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

24、can break down nutrients quickly.4. Do pure water and 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 w

25、eight and freezing point? The higher salinity water 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

26、 density measured?3) Which is denser, water or oil?4) 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

27、sinks and pushes less dense water to the surface. 6. 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

28、 to the marine ecosystems.3) What causes ocean motion? 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

29、 function of heat capacity? It determines how a substance 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

30、ranged from 5 dollars to 10 dollars. The show had a massive 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

31、 kind of you to come all the way to see me. We stayed in the 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 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