unit 13 the water planet 教案(人教版高二英语上册教案教学设计).docx
unit 13 the water planet教案（人教版高二英语上册教案教学设计）课题：Unit 13 The Water Planet Teaching ContentThe First PeriodWarming up Listening Speaking二、Teaching Aims:1. Learn and master the new words and the useful expressions of this part.Words: cube, sailor, disadvantages, entertainmentPhrases: come up with, happen toUseful expressions: The water is being used to/for We should/couldIf we we can It wou 1 d be better 2. Learn something about water by doing experiment.3. Do some listening.4. Improve the students' speaking ability by talking.三、Teaching Important Points:1. Make the students be free to talk about water.2. Improve the students' listening ability by listening.四、Teaching Difficult Points:1 .How to finish the task of speaking.2 . How to improve the students' listening ability.五、Teaching Methods:1. Listening-and-answering activity to help the students go through with the listening material.2. Individual, pair or group work to make every student work in class.六、Teaching Aids:1 .the multimedia2 .the blackboard3 . an empty glass, a bottle of water and a bottle of vegetable oil七、Teaching Procedures:Step I Greetings and Lead-inT: Hello, everyone.Ss :Hello, teacher.T: Attention, please. As we all know, every year during the Spring Festival and Lantern Festival in our country, people like to see the lion dance and guess the riddles. Do you like to guess the riddle?Ss: Yes.T: OK. Now I have a riddle. Please guess it.(Teacher uses the multimedia to show the riddle on the screen.)It' s very important to all the animals and plants.It' s also important to human beings.It' s liquid at room temperature.Every day you keep in touch with it.You can' t live without it. (a thing)T: What' s it?Ss: It' s very easy. It' s water.T: Yeah, today we will talk about water. Now please tell me what you know about water.51: Water is used to drink.52: Water can be used to water the flowers.S3:I think water can be used to make electricity.Step II Warming upT: Thank you for your ideas. Next we will look some interesting experiments. Maybe you can learn more about water from the following experiments. ( experiments shown on the screen)T: Pour some water and some vegetable oil into the empty glass. What will happen? Try to describe it in detail.S: The part above is vegetable oil and the part below is water.T: Good. Do you know why?S: I think water is heavier than oil, so vegetable oil is on the top of the water.T: Who has different ideas?S: I think we should say that the density of water is higher than the density of vegetable oil, so the result formed.T: Do you agree with the reason for it?55: Yes. We agree with the idea.T: As we know, if we pour milk and water into one glass, we can, t tell where water is and where milk is. But just now we poured oil and water into one glass. It is so different. Do you know why?Ss :Because oil can' t dissolve in water, but milk can.T: Very good. Would you like to watch another experiment?Ss: I' d love to.T: OK. Cover a glass of water with a piece of thick paper. Put one hand on the paper and turn the glass upside down. Slowly take your hand away from the paper. What happens? Why?Ss: The piece of paper doesn' t fall and the water in the glass doesn' t flow.T: Yes. You are right. Now you are given a few minutes to have a discussion about the reason for it.T: Who can tell us the reason why the piece of paper doesn' t fall and the water doesn" t flow?S: When the glass of water covered with a piece of paper is turned upside down, the pressure from air to the piece of paper is bigger than the pressure from the water in the glass to the piece of paper. So the paper won' t fall and the water won' t flow.T: Excellent! Thank you for your explanation. I am very glad to see that you are all interested in making experiments. After class, you can carry out another two experiments on Page 17. When you perform them, try to describe what happens and why. OK?Ss: OK.T: Now, let' s look at a picture.(Teacher shows a picture on the screen.)T: What can you see?Ss: There is a river in the picture, but it' s very dirty.T: Anything else?S: There are some plastic bags and empty tins on the surface of the river.T: Yes. We all know water is important to human beings and all the animals and plants. Unfortunately water is being polluted now. What do you think we can do to protect the water on our planet?(Teacher gives students enough time to prepare. When they prepare, teacher goes among the students to help them to express their ideas correctly.)Sample answer:To protect the water on our planet, I think we should save every drop of water and stop throwing rubbish into water. Besides, we should try our best to help the people around us realize the importance of using and protecting our water.Step III ListeningU: Next, let' s do some listening. Turn to Page 18 and look at the Listening part. You can listen to the famous poems about life on the ocean. Listen carefully and write down some key words when you listen. Before you listen, let' s learn two phrases first. Look at the blackboard.1 .happen toe.g. What happened to you last week?If anything happens to the machine, please tell me.2 .come up withe. g. I hope you can come up with a better plan than this.(Teacher writes them on the blackboard and begins to explain them.)T: Now listen, please.(Teacher plays the tape for the first time. Then play it for the second time. During this time, teacher may pause for students to write down the information. Play some parts of the tape one more time if necessary. Finally teacher checks the answers with the whole class.)Step IV SpeakingT: In our daily life, water can be used in different ways. Now we' 11 talk about the ways in which water can be used. Look at the pictures on Page 18. The six pictures mean six different ways to use water. You can choose one of the pictures to discuss the importance of using and protecting our water, and then try to use some sentences to describe the picture you choose. If you like, you can make a dialogue with your partner about the picture. When you discuss, you may use the questions on the screen to help you.1. How is the water being used?2. Is this a good way to use water?3. Why do we use water in this way?4. Who benefits from using water in this way?5. What are some disadvantages of using water in this way?(Teacher shows the questions on the screen by multimedia and gives students enough time to discuss and prepare.)Suggested answers:(Picture 1)We can use water to make electricity, which can give us light and make us feel warm . I think it is a good way to use water.(Picture 3) Water has a lot of usages and home use is the commonest one. Every day we must drink enough water. In addition, we need a lot of water, just for cooking and keeping clean. Water can help us to keep healthy. But if the waste water from home use is poured into river and soil, it will be harmful for some animals and plants. So we must pay more attention to it.(Picture 4) In Picture 4,water is being used in industry. Water is very important to industry. It can be used to make paper, cool machine and so on. But the disadvantage is that a lot of water mixed with some poisonous things being poured into the river and the sea. It is dangerous for the living things in the water.(Picture 6)A: Do you know how the water is being used in Picture 6?B: Water is being used for entertainment.A: Is it a good way to use water?
