| unit 9 saving the earth(人教版高二英语上册教案教学设计) |
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Lesson 34 (the first period) PART 1 Understanding of the teaching material STATUS AND FUNCTION 1. This unit is about pollution. It is a focus of the whole world. This lesson is the second one of Unit 9. It is a passage about some serious problems the earth has. It is related to our daily life. 2. This lesson is very helpful for the Ss to improve their reading comprehension ability and spoken English. TEACHING AIMS AND DEMANDS Knowledge objects 1. To make the Ss know that now the earth has a lot of serious problems and people are causing a lot damage to the earth. And if people don’t stop polluting the word and pay more attention, the whole situation will be more and more serious. 2. To give a reinforced practice in the use of the past participle and some useful expressions, such as be fit for; turn … into… ; in place and so on. Ability objects 1. Make the Ss the real masters in class while the teacher himself acts as the director 2. Train them with some effective learning methods to optimize the students' learning results. 3.To improve their reading comprehension ability. 4.To improve their written English. Moral objects 1.Enable the students to love our earth and the nature. 2.Encourage the students to do something to save and protect the earth and our environment. TEACHING AIDS: computer; OHP(overhead projector);software: PowerPoint TEACHING KEY POINTS 1. Input the passages as a whole Make the Ss grasp and understand the general idea of the passages as a whole. 2. Language communication A. Tell the main idea of the passages B. Practise the main idea of the passages C. tell their own stories related to the daily life TEACHING DIFFICULTIES 1. The general idea of the passages especially the causes and results of different problems 2. Telling their stories about pollution 3. Thinking of some ways to save and protect our earth especially in our daily life PART 2 Teaching Methods Five Steps Method, Communicative Method. Aural-oral Method with the help of the computer * A lot of pictures and short videos about the causes and results of the three problems mentioned in this lesson will be shown on the screen with the help of the computer. PART 3 Studying Ways 1. Teach the Ss how to be successful language learners. 2. Teach the Ss how to master the general idea and structure of a passage by reading it . PART 4 Procedure Step 1 Revision Check the homework exercises Step 2 Lead-in 1. A song about the topic we’ll learn today. “ Earth song ” by Michael Jackson (Because it is too long ,play it before the class begins.) 2. Some pictures.(show them to the Ss on the screen) Picture 1: an earth with a smiling face (she used to be happy) Picture 2: an earth with a crying face (she is sad now) And ask the Ss why she is sad now. 3. Some more pictures in pairs as comparison . Pair 1: the sea used to be clean and the beach is beautiful but now they are seriously polluted. Pair 2:green grass and thick forests but now only deserts left Pair 3: the sky was blue and clear but now there are a lot of smoke in it and it is no longer blue and clear. 4. Some short videos about different kinds of problems the earth has, including the three mentioned in the lesson – earth problem , air pollution, and water pollution. Step 3 Presentation The teacher's brief introduction Today we will deal with the three most serious problems the earth has --– earth problem , air pollution, and water pollution. 1. Pre-reading silently Give the Ss a few minutes to go through the passage as quickly as possible and try to find out the causes and results of the problems. 2. while-reading Passage1: a. Show the Ss a picture and ask what can be found in it. (The area of the desert of the world is very large and it is growing every year.) b. a short video about desert c. Question: What are the causes of the problem? Show some pictures to help the Ss to answer the question too many cattle eat all the grass nothing can grow trees be cut down no trees left to hold… blow …; wash… Passage2: a. Show the Ss the following pictures. b. Questions : What can you see in the pictures? Why do these things happen? c. a short video about chemical rain d. Ask the Ss to explain the causes and results of chemical rain according to the video and with the help of the following pictures. how does chemical rain form? smoke from factories smoke from cars e. another reason for air pollution --- serious accident Ask the Ss to tell the stories about the two most serious accidents. Passage3: a. Show the Ss two pairs of pictures. Pair 1: One is a picture of a beautiful beach and people are enjoying the sunshine on it; while the other is of the polluted sea. Pair 2 : In one of them there are a lot of fish in the river; in the other one there is nothing in the water but rubbish flowing here and there. b. Give the Ss a few minutes to find the reasons/ c. Show some pictures to help them. Waste from factory waste form cities d. Another reason for water pollution – accidents Show them the picture a sinking oil tanker tell the story mentioned in the passage. 3. after-reading 1. Summarize the passage . Fill in the following form. Fact causes results Earth problem Air pollution Water pollution 2.Choose the best answers. 4. Fill in the blanks. Step 4.Furthre discussion 1. Ask two students to tell their stories .(ask each of them to get ready for one before the class.) 2. Think of the question : Are we causing damage to the earth? 3. What should we do or what should we pay attention to in order to protect and save our earth? 4. Collect their answers and form a propose as following. A PROPOSAL 1) Don’t use one-off chopsticks , lunch-boxes and cups. 2) Don’t use paper tissue when you sneeze,use handkerchief instead. 3). Don’t send post-cards.Send electronic cards by e-mail. 5). Don’t make a lot of noise. 6). Don’t waste water 7). Don’t waste electricity. 8). Don’t destroy trees and grass. Step 5 Homework Write a letter |
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