unit 2 saving the earth topic 2 sectionc 开学必备教案 仁爱版九年级上
4页1、Unit 2 Saving the EarthTopic 2 All these problems are very serious.SectionCThe main activity is 1a. 本课重点活动是1a。. Teaching aims and demands 教学目标1. Learn some new words and phrases:on earth, period, millions of, take away, rise, level, refer to2. Learn some useful sentences: (1) When it rains or when the wind blows, the earth is taken away. (2) The heat from the sun cant escape so the temperature is rising.3. Learn to talk about the harm of pollution:(1) Forests have become deserts, so more and mor
2、e sorts of animals and plants are disappearing.(2) As a result, many rivers and lakes are now dead. (3) Too much harmful radiation from the sun passes through the hole and reaches the earth directly.(4) It causes the level of the oceans to rise and the climate of the earth to change.4. Develop the students sense of environmental protection. . Teaching aids 教具图片/小黑板. Five-finger Teaching Plan 五指教学方案Step 1 Review 第一步 复习(时间:4分钟)通过检查作业,引导学生开拓思维,提出保护环境和水资源的具体措施,复习不定代词和副词。为学习新词汇作准备。(检查作业,并找学生汇报结果,引导学生
3、如何保护水资源。)T:How do you protect our environment and save water?S1:Everyone should plant more trees.S2:We should do everything we can to save water.S3:Everybody should know the importance of forests.S4:Pass laws against water pollution.S5:Collect and reuse waste water.Step 2 Presentation 第二步 呈现(时间:18分钟)教师通过日常对话,借助1a中的图片,创设情景,导入新课,呈现新的词汇。1. (教师由日常对话,引出本课话题,呈现部分新词汇。)T:Whats the weather like today?Ss: Its T:As we know, Beijing often has sandstorms in spring. What causes the bad weather?Ss:Cutting down
4、 too many trees. (展示1a第二幅图画。)T:Yes. All over the world, people have cut down millions of trees. And trees become fewer. (板书并要求学生掌握。) millions ofT:Cutting down too many trees causes the bad weather. How can trees affect the weather?S1:They can keep water from running away. S2:They can stop S3:T:Yes. Trees can stop the wind and water from taking the earth away.(板书并要求学生掌握。)take away2. (继续探讨上述问题,引出新词汇。)T:Anything else?(如果没有学生回答,继续如下问题。)T:Whats the air like in the forest?Ss:Its fresh.T:Yes. Why?Ss:(允
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