Unit 5 Look into Science-Lesson 29 DNA — The Story of You-ppt课件-(含教案+音频)-市级公开课-冀教版九年级全一册英语(编号：40010).zip

What do you know about DNA?What can scientists do with DNA?DNAblueprint 蓝蓝图图 general adj. 一一般的、般的、普遍的普遍的repeat 重复，复述twin 双胞胎之一complex 复杂的identify确认、鉴别instruction指示、说明pattern模式外孙、孙子外孙女、孙女相关的、有关的grandsonrelatedgranddaughter1. What is a blueprint?2. Which is more complex, building a living thing or building a house?3. Do some twins have the same DNA?4. Is it possible to change your DNA?5. Whose DNA is related to yours?Group Work 1. In general, a blueprint is a drawing that shows how to put a house together with many different parts.in general-一般而言，概括说来一般而言，概括说来 ( (通通常置于句常置于句首）。首）。 也可用也可用generally speaking来表示。来表示。2. But building a living thing is far more complex than building a house.比较级前可以用比较级前可以用much, even, still, far, a bit, a little, a lot等词加等词加以修饰。以修饰。3. Except for some twins, every living thing has its own unique DNA.except for 意思是“除.之外，要不是由于” 排出不同类的except “除.之外” , 排除同类。一般不用于句首。4. From your DNA , scientists can identify not only you, but also people who are related to you.a. Not onlybut also不但。而且。连接两个相同的成分或两个分句。当接两个主语时，谓语动词和后面的主语保持一致。Eg; Not only you but also I am a teacher.b. Relate to 涉及，有关Eg; The story related to the Second World War.Write a short passage about what we learnt today. Try to tell what it is,where it is from,.Today, we talked about_. Its the_of_. Its _.Every _ has its own_ DNA. Some illness can be _by problems in your DNA. So _ might be able to_your DNA . You have your own DNA, but it_ pattens from your_ DNA. From your DNA, scientists can_the people who are_ you. Your DNA explains why you are the way you are.Thinking:Is it a good idea to change the DNA of the food we eat?Finish your writing and your exercise book;Do the survey about the changing DNA.- 1 -一、基本信息一、基本信息学校 课名Lesson 29 DNA-The Story of You教师姓名学科（版本）英语 冀教版章节Unit5学时第一年级九年级二、教学目标二、教学目标1. 知识能力目标：掌握词汇和短语：, general, repeat, grandson, granddaughter, instruction;接触词汇: blueprint，blueprint, complex, twin, pattern, identify, related;短语和句型: in general, except for, be related to, billions of. 2. 情感目标：The students know more about the DNA by reading the text. And to know themselves by knowing DNA. Whats more, everyone is unique in the world.三、学习者分析三、学习者分析 九年级的学生在接受本课学习的时候，已经有一定的相关知识储备和自学能力。这为本课的学习提供了极有利的条件，比如课前新单词的自学。这不仅锻炼了学生的自学能力，也为本课的阅读扫除了障碍。由于本课是一篇科普说明文，而且学生对该话题不是很熟悉，因此在阅读得时候老师要注意引导和帮助学生。四、教学重难点分析及解决措施四、教学重难点分析及解决措施1. Students need to learn and master the key words and phrases. 2. Students need to understand the article. 3. Attributive Clause. 学生自学，小组互助和老师的答疑；五、教学设计五、教学设计教学环节环节目标教学内容学生活动媒体作用及分析 Greetings引起学生的注意Greetings Greetings屏幕展示欢迎进入- 2 -本课Revision/Lead-in让学生回顾前面所学知识及预测本课新知A Short revision and predict the new textStudents recall what they learnt and they will learn使用表格的放大功能展示图片，帮助学生复习学过的知识；利用隐藏橡皮擦功能擦出新课题 ;Presentation Experience1. 检查学生的课前学习Words learningStudents teach and learn by themselves.使用白板的颜色功能,翻板，隐藏，随机图片色子功能等功能展示单词，调动学生积极性，课堂气氛浓厚2.学生通过阅读来理解文章Text reading and understandingRead the text屏幕展示学生的阅读任务，并给给出钟表，限时阅读3.小组互助理解难点Four students a group. To help each otherStudents lean the difficult together.屏幕展示学习任务小组活动4.学生通过回答问题进一步理解课文Show students some questions Students answer the questions屏幕展示问题- 3 -5.老师讲解重难点，帮助学生理解知识点Show students the important notesStudents listen carefully and learn利用白板软件中的众多功能更形象直观的讲解重要知识，加深学生的印象Exercise及时的巩固和练习所学知识Show students the exercise about the important notesStudents do the exercises by themselves利用白板的书写和展示功能，学生自己操作。Text Reading 新课进行完后对课文的再一次回顾Text reading againFollow the tape and read again插入课文视频，让学生跟读更直观形象。Summary复习总结本课所学知识 A short passage Fill in the blanks and complete the passageThinking拓展相关知识，引导学生思考Show students a question about changing DNA展示图片，让学生更直观地了解思考的内容Homework复习巩固本课Show students homework