| 初三 Unit 13 The world's population Lesson 50教案
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Period: The Second Period Content: Lesson 50 Properties: Recorder; Overhead Projector; Pictures. Teaching Objectives: 1. Understand the text. 2. Learn some useful words and phrases. Language Focus: room, hour after hour. Teaching Procedures: I. Showing the teaching aims II. Revision Get the students to revise the numbers first, then give them a dictation: A. 173 B. 6854 C. 17 000 D.456789 E.88990 F.378565214. Finally check their answers. III. Leading in Ask: Do you know what the population of China or any other country in the world is? Then say: Today we're going to read about the world’s population. The world’s population is growing very fast. It is a big and serious problem. Can you tell me the reasons? Let the students discuss and help them answer with: “There isn't enough food, work for too many people. There aren't enough houses…” etc. Let the students read the questions at the top of the page, get them to know very clearly, then ask them to read the passage quickly. And answer the questions. IV. Reading Get the students to look at the Exercise below: 1. How many babies are born in one hour? 2. What do you think is the greatest challenge of the world today? 3. How is the world’s population growing? 4. When was the population over 6 billion? 5. What will happen in about 600 years? Go through the questions, then read the passage more carefully, try to find all the answers in the reading. Discuss the answers with the classmates. The students should understand the meaning of the words such as: earth, mouth, space and century from the context. Let them note the use of comparative of adjectives and adverbs in the passage. Finally check the answers with the whole class. V. Practice Let the students know a little more knowledge about the world’s population. The world’s population is now over 60 billion. It's likely to reach 10 billion by the middle of the 21st century. The Third World population is rising rapidly, straining health and education systems, hitting the environment, causing explosive urban growth and complicating food supply. So population has become a serious problem. The reading passage in this lesson aims to draw the student － concern about this great world problem. VI. Language Focus Get the students to know how to use the following word and expressions. 1. room: I’m afraid, there is no room ( space ) for us on the bus. Let me make room for our teacher. 2. hour after hour: The clock goes on striking hour after hour. Peter stayed in bed day after day. Year after year went by, she still didn't receive her son's news. VII. Workbook Do Exercises 2 and 3 individually, then check the answers with the whole class. The answers to Exercise 2: about, not, Multiply by. Hour after hour, fast, developing, problem, developed, slow down. The answers to Exercise 3: 1. hardly 2. at the beginning of 3. path 4. worth 5. Beg your pardon VIII. Consolidation Go through the passage again. Discuss the problems that the population explosion will bring. Get the students to use as much English as possible. Exercises in class Write a short passage about the population, 1. 人口问题是世界上最大的问题之一。 2. 人口增长非常快。 3. 600年后，地球上将只有立足之地了。 4. 中国人口众多。 5. 如果每个家庭只生一个孩子，问题就会变得好多了。 |
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