3  1.Ask students to classify the pictures in the following way:  Traditional farming (1 3 5)  Agriculture      Modern farming (2 4 6)    Hi-tech farming (7 8)    2.Compare traditional & modern farming, focusing on the advantage & disadvantage of modern farming. Then fill the form. (Show the pictures again)  Agriculture       Advantages     Disadvantages   Traditional  farming     Modern farming    Hi-tech farming        设计意图：（1）激活学生已有的信息，使学生具备摄入新知识的心理定势。  （2）激发学生的学习兴趣。 （3）帮助老师引入课文的主题。   Step III. While-reading(17 minutes)(读中，18分钟) 1.Skimming (4 minutes) (跳读，4分钟)  Ask the students to read the passage quickly. While reading, find out the main ideas of each paragragh (On the screen). Para.1    Agriculture in general in China  Para.2    Modernization in farming  techniques    Para.3    Balance between food production  and  environment  Para.4    Greenhouse– a solution for the  shortage of arable land Para.5    GM used in  Agriculture Para.6    GM research on tamato  （Show the possible answers on the screen)(将参考答案显示在屏幕上)  学生活动：学生快速浏览课文，了解课文大意。  设计意图：训练学生快速阅读，归纳各段落的中心意思的能力。（Skimming  for the main idea）  2.Scanning (10 minutes)(查读，10分钟)  Get the students to read the text carefully and finish these exercises ，then ask some students to give the answer.      （1） In China only seven percent of the land is used for farming.         This is _____.  A. because farmers don’t need more land to produce food for the whole     4  population  B. because China needs more and more land to build cities C. because there are not enough farmers to work on the land D. because the other land cannot be used for agriculture （2） Fertilisation is a technique that is used to ______.        A. make poor soil better           B. make wet land drier         C. make dry land better          D. grow vegetables with their roots         in water instead of earth  （3） Modern agriculture means finding  ways to _____.     A. increase irrigation and stop using fertilisers     B. stop irrigation and using fertilisers      C. increase production and be friendly to the environment      D. produce the same amount while taking better care of nature （4） In the sentence “„ they are protected from the wind, rain and insects”, “they” means _____.         A. greenhouses        B. roots           C. vegetables       D. tomatoes  （5） In GM “M” stands for “modified”, which means “changed”. What changes is ______.     A. the way in which poor soil is made better      B. the way in which Chinese farmers work on their land    C. the way in which crops develop from seed      D. the way in which farmers take care of the environment 学生活动:认真阅读课文完成任务，然后向全班汇报。 设计意图:训练学生快速查读细节、捕捉信息的能力。    Step Ⅳ Language study(5 minutes)(语言学习 5分钟)  There are some useful words and phrases the studeuts should learn to  use in the passage:(本课中学生应学会使用的单词和短语:)  protection,technique,irragation, import, production, garden, wisdom, pratical, system,  condition, soil  be harmful to, be friendly to, depend on, stand for,a variety of   Step V Group work (7 minutes)小组讨论(7分钟)  Ask the students to discuss the questions on Page47 in groups to make further understanding of the text. Decide which fruit, vegetables and farm animals you would change. Explain how you would change them and why.  学生活动:学生思考并讨论上述问题，然后向全班同学汇报。 设计意图:帮助学生进行课堂反思，自己学到了些什么知识；  Step Ⅵ Conclusionand Homwork（1 minutes）总结和布置作业 （1分钟）  Make a brief summary about the text and assign the homework.    5  T: Today, we’ve read the passage about modern Chinese agriculture. We are sure we’ll have healthier and mo delicious food in the near future with the new technology. After class, please read the text once agaim and find the sentences you appreciate most.   十.The Design of the Writing on the Blackboard（板书设计） Unit 19 Modern Agriculture Reading: Modern Agriculture Key words and phrases:   protection,technique,irragation, import, production, garden, wisdom, pratical, system,  condition, soil be harmful to, be friendly to, depend on, stand for,a variety of Difficult Sentences:  a. It is on this arable land that the farmers produce food for the whole population of China.   b. To make as much use of the land as possible, two or more crops are planted each year where possible.   十一.学生学习活动评价设计   评价方式采用：自评、他评、师评。每个主题活动结束后，学生填写一张评价表，学期做阶段性评价，并把评价结果记入“我的成长足迹”。    十二.Reflection after teaching (教学反思)  本节课在多媒体的辅助下，一方面以直观的图片激发学生学习的兴趣，另一方面以课件形式展示，节约了书写的时间，一节课的时间虽紧凑但却能借助于多媒体安排更多的内容，能更加顺利地完成不同的任务设置skimming(跳读)和scanning(查读)，培养学生的阅读技巧，教会学生更快更准的找到问题的答案和有效的信息。  在活动中主要让学生独立完成各项任务，达到了英语阅读的训练目的。 但是，本堂课也还存在一些不足，需要加以改进：  1.由于本堂课任务多，容量大，导致完成任务时间较紧，在Pre-reading部分耗时过多，任务间过渡不够自然，今后应注意教学步骤间的紧密衔接。   2.本节课注重学生阅读技巧的训练，在一定程度上培养了他们的阅读能力，但课文知识内容拓展不够。  3. 多媒体的使用虽然带来了诸多方便，但同时呈现的内容过多，能让学生记住的东西却反而少。