课题 | period5 Chemical versus organic farming | 单元 | Unit5 | 学科 | English | 年级 | Senior Grade 2 |
教材分析 | This part is a reading passage about Chemical versus organic farming. Through the passage students can know chemical farming and organic farming，thus inspiring us to eat healthy. | ||||||
学习目标 与核心素养 | Knowledge objectives: grasp some important words, phras and expressions in this parts. And learn the difference between chemical farming and organic farming. Skill objectives: master how to distinguish two things and grasp the structure of an argumentative essay, especially making comparison. Emotional objectives: learn to explore Chemical versus organic farming and improve the ability to distinguish two things.. | ||||||
重点 | Help students to introduce organic farming using the related words and expressions. | ||||||
难点 | Some related expressions to an argumentative essay. | ||||||
教学过程 | |||
教学环节 机关作风建设 | 教师活动 | 学生活动 | 设计意图 |
导入新课 | Step1 lead-in Question:what are they doing？ He is spraying pesticide He is fertilizing the soil He is using organic fertilizer What is chemical farming? Chemical farming is farming using chemical pesticides and artificial fertilizers What is organic farming? Organic farming is not pesticide, fertilizer, and other synthetic growth agents of production, but u manure for fertilizer and other organic fertilizers. | Discuss the pictures in groups and answer the following questions What are they doing？ | The method can arou students’ interesting, and they can come into the class actively. Introduce the topic Chemical versus organic farming |
讲授新课 | Step2 Reading Paragraph1 1.chemical pesticides 那人依旧2. artificial fertilirs 3. widespread adj. Paragraph2 4. bacteria n. 5. in turn 6. digest vt.&vi. 7. prohibit v. 8. nutrition n. 9. esntial adj. 10. mineral n. Paragraph3 11.alternative n.、adj. 12. grocery n. 钮枯禄氏free of 14. instance n. for instance 15. ……, making it ready for the next batch of crops. 16. depth n. 17. root n. put down deep roots 18. entirely adv. 19. What keeps them from doing so is the fact that chemical farming rves the high demand for food around the world. what引导主语从句，在从句中做主语；that引导同位语从句，是the fact的同位语。 阻止他们这样做的原因是化学农业满足了世界各地对粮食的巨大需求。 Step3 Question Time Read the text and answer the following questions. 1.Why did many farmers welcome the introduction of chemical farming? Many farmers welcomed them as a great way to fight crop dias and increa production. 2. What concerns many people about the u of pesticides? Their long-term u can sometimes harm both the land and people’s health. 3. What is one problem with the u of chemical fertilizers? Crops grown with them usually grow too fast to be rich in nutrition. 4. How is organic farming different from chemical farming? Organic farming is simply farming without using any chemicals. Organic farmers focus on keeping their soil rich and free of dia through natural means. 5. Why do organic farmers change the kind of crop grown in a field every year? Different crops are grown becau they put important minerals back into the ground, making it ready for the next batch of crops. 6. What is the goal of using organic farming methods? Do you think it can be reached? Why or why not? 1）The goal of using organic farming methods is to grow good food while avoiding damage to the environment or to people’s health. 2） Yes, I think this goal can be reached. People’s awareness of eating organic foods is increasing. And farmers worked for centuries without using any kinds of chemicals and without harming the environment, and the food they produced was just fine. 7. Why could some people not choo but u man-made chemicals in agriculture？ Becau chemical farming still rves the high demand for food around the world and organic farming is nowhere near able to meet the need. Study be esntial to/for对……很重要 It is esntial that…(should) do…做……是完全必要的 It is esntial do…对某人来说做……是完全必要的 have no alternative/choice but to do sth. 别无选择只好做某事 have the alternative of doing sth. 有做……的选择；可以做…… an alternative to… ……的替代品 动词-ing形式短语做结果状语表示自然而然的结果，常用逗号与主句隔开, 有时在其前加副词thus;动词不定式做结果状语往往表示出乎意料的结果 或不好的结果,其前常加only。 Step4 Group show Match the main ideas (A-D) below with the paragraphs 1-2 D 3A 4C 5B Discuss the advantages and disadvantages of chemical farming and organic farming. And tell which one you prefer and why. Tips: Chemical farming Advantages: fight crop dias, increa production (rve the high demand for food around the world) Disadvantages: 1)pesticide can harm land and people’s health, kill helpful bacteria and incts and stay for a long time and affect crops, animals and people 2)chemical fertilizer are not rich in nutrition and have less flavor 铁观音茶Organic farming Advantages: keep soil rich and free from dia through natural means Details: natural waste from animals as fertilizer change the kind of crop in each field every year plant diver crops using different depths of soil Disadvantages: unable to rve the high demand for food around the world Topic ntence: In my opinion, farming is preferable to farming becau . Point1 . Details 白薯秧. Point2 . Details . Point3 . Details . Conclusion . Exchange your draft with a partner. U the checklist to help you review your partner’s draft. In my opinion, modern agriculture is preferable to traditional agriculture. First of all, nowadays most farmers grow crops with the help of modern machines instead of planting crops with their hands. As a result, modern farmers no longer need to work so hard as before. What’s more, the output and working efficiency are also improved greatly, which contributes a lot to social-economic development. Although the fertilirs and pesticides ud in modern agriculture have destroyed the environment badly, experts are making efforts to get rid of them and paying more attention to the plant nutrition and protection. In a word，I am in favor of modern agriculture. | Read the passage by themlves and finish the related exercis，using what you have learned Read the text and answer the related questions. Work in groups Discuss the advantages and disadvantages of chemical farming and organic farming. And tell which one you prefer and why. | Improve students’ widely engagement becau they can express their opinions. and improve their abilities to capture the details of reading passage. Cultivate students’ analytical and creative abilities and improve the ability of finding details and competition Deepen the understanding of the text and grasp how to introduce the difference between chemical farming and organic farming |
课堂小结 | Step5:Summary: The are what we’ve learned in this passage. See PPT Step6 Homework U what you have learned to write an introduction chemical farming and organic farming. And tell which one you prefer and why. （80-120词左右） | 姓杨 | |
板书 | Unit5 Working the Land Period5 Chemical versus organic farming Topic ntence: In my opinion, farming is preferable to farming becau 龙的资料. Point1 . Details . Point2 . Details . Point3 . Details . Conclusion . | ||
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