2015秋冀教版英语九上Unit 5《Lesson 29 DNA—The Story of You》随堂练习
Lesson29DNA—TheStoryofYou教案2023-2024学年冀教版英语九年级全册
②关键词：DNA、基因、染色体、复制、转录、甲基化、基因编辑、DNA指纹、基因治疗。
③句型：DNA是由核苷酸组成的双螺旋结构，它是生物体内的遗传物质，负责存储和传递遗传信息；DNA的复制保证了遗传信息的准确传递；基因决定了生物的性状；DNA技术在医学和基因工程等领域有广泛的应用。
-采用项目导向学习法，教师可以组织学生进行小组项目，如设计一个关于DNA的小游戏或演示，让学生通过实践活动来巩固所学知识。
2.教学活动设计：
-角色扮演：学生可以扮演科学家、律师、医生等角色，通过模拟真实场景，如DNA鉴定法庭程序，来增强学生对DNA技术应用的理解。
-实验操作：学生可以参与DNA提取实验，通过亲自动手操作来观察DNA的结构和特性，提高学生的实践操作能力。
2.教学难点：
（1）DNA的结构：学生可能难以理解DNA的双螺旋结构和核苷酸的组成。可以通过动画演示和模型展示来帮助学生形象地理解。
（2）DNA的复制过程：学生可能难以理解DNA复制的机制和步骤。可以通过图解和实验演示来帮助学生掌握复制过程。
（3）基因与性状的关系：学生可能难以理解基因如何决定生物的性状。可以通过具体的实例和遗传图解来帮助学生理解。
作用与目的：
-帮助学生深入理解DNA知识点，掌握DNA技能。
-通过实践活动，培养学生的动手能力和解决问题的能力。
-通过合作学习，培养学生的团队合作意识和沟通能力。
3.课后拓展应用
教师活动：
-布置作业：教师根据本节课的内容，布置适量的课后作业，巩固学习效果。
-提供拓展资源：教师提供与DNA课题相关的拓展资源，如书籍、网站、视频等，供学生进一步学习。
冀教版九年级英语全册Lesson29DNA—TheStoryofYou教学设计
在导入新课的基础上，我将结合课文内容，详细讲解以下知识点：
1. DNA的定义：DNA是脱氧核糖核酸的缩写，是生物体内负责遗传信息传递的分子。
2. DNA的结构：DNA由两条互相缠绕的链组成，形成双螺旋结构；基本组成单位为核苷酸，包含磷酸、糖和碱基。
3. DNA的功能：DNA携带遗传信息，通过基因控制生物体的生长发育、形态结构和生理功能。
4.相关词汇：讲解生词和短语，如chromosome（染色体）、gene（基因）、inheritance（遗传）等，并举例说明其在实际语境中的应用。
（三）学生小组讨论，500字
讲授新知后，组织学生进行小组讨论，以下为讨论内容：
1.话题：DNA在生活中的应用，如基因检测、生物制药等。
2.分组：将学生分成若干小组，每个小组选择一个话题进行讨论。
冀教版九年级英语全册Lesson29DNA—TheStoryofYou教学设计
一、教学目标
（一）知识与技能
1.掌握本课的生词和短语，如：DNA, chromosome, gene, inheritance, identical等，并能在实际语境中正确运用。
2.理解并掌握一般现在时和现在进行时的用法，用以描述科学事实和正在进行的研究。
2.阅读理解：提供一篇关于DNA的短文，要求学生阅读后回答问题，检测他们的阅读理解能力。
3.写作练习：要求学生运用所学词汇和语法，写一篇关于DNA的小短文，如介绍DNA的结构、功能等。
4.口头表达：邀请学生上台，用英语介绍DNA的相关知识，锻炼他们的口头表达能力。
（五）总结归纳，500字
在课堂尾声，带领学生进行以下总结归纳：
三、教学重难点和教学设想
（一）教学重难点
九年级英语上册Unit5LookintoScienceLesson29DNA—TheStoryofYou教案(新版)冀教版
Unit 5 Look into ScienceLesson 29 DNA-The Story of You1. Analysis of the StudentsThe students of Grade 9 have mastered certain vocabularies，expressions and structures. They also have the abilities of self-teaching and working in groups. Most of them are willing to express their opinions in English.2. Analysis of Teaching ContentLesson 28 is the fifth lesson in Unit 5, Book 5.This unit focus on the subject Look into science, also teach the students something about science. Students cares about the subject because it is close to everyone. Lesson 28 mainly talks about DNA, it tell us the character and function of DNA, also understand our body. We are unique in the world.【知识目标】1.To master the words: blueprint, general, complex, twins, pattern, identify, be related to, except for.2. To master the phrases: not only…but also, except for, be related to, billions of.【能力目标】Improve the students’ ability of speaking, listening, reading and writing. Understand the articles about DNA.【情感目标】Know more about the nature, know more about our body. You are unique in the world. 【教学重点】To master the compound sentences.【教学难点】To master the use of DNA.Tape recorder, MultimediaStep 1. Warm-upFree talk: (show the picture of DNA, tell students DNA is short for deoxyribonucleic acid.)Think about it!1. What do you know about DNA?2. What can scientists do with DNA?Step 2. Presentation1.Free talk:(1)Where is it in our body? (Show some pictures of DNA.)(2)What's the function of DNA? (Show some pictures of twins.)2. Explain the new words.3. Read the lesson and answer the questions：(1) 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?4. Check the answers and underline the key words.5. Listen and follow to the tape.6. Explain the language points:between与amongbetween用于两者之间，among一般指三者或三者以上。
冀教版九年级英语全册Lesson29DNA—TheStoryofYou说课稿
一、教材分析
（一）内容概述
本节课的教学内容选自冀教版九年级英语全册Lesson29 "DNA—The Story of You"。这一课在整个课程体系中属于生物科学主题，旨在让学生了解DNA的奥秘，认识基因与个体之间的联系。本节课的主要知识点包括：DNA的基本概念、基因的遗传规律、DNA在生活中的应用等。通过本节课的学习，学生能够运用所学英语词汇和句型，描述DNA的结构和功能，并探讨基因与个体特征之间的关系。
这些媒体资源在教学中的作用是：丰富教学手段，提高课堂趣味性；拓展学生的知识视野，帮助他们更好地理解和掌握教学内容；促进学生自主学习，提高学习效率。
（三）互动方式
我计划设计以下师生互动和生生互动环节，以促进学生的参与和合作：
1.师生互动：课堂上，教师提问，学生回答，教师给予积极评价和反馈。此外，教师还可在课后通过网络平台与学生进行互动，解答他们的疑问。
为了激发学生的学习兴趣和动机，我将采取以下策略或活动：
1.创设情境：通过引入生活中的实例，让学生感受到DNA在现实生活中的重要性，从而引发学习兴趣。
2.互动讨论：组织学生进行小组讨论，鼓励他们发表自己的观点，提高学生的参与度和积极性。
3.多元化教学：运用多媒体、实物模型等教学手段，增强课堂的趣味性，帮助学生更好地理解抽象概念。
（一）导入新课
为了快速吸引学生的注意力和兴趣，我将采用以下方式导入新课：
1.情境创设：通过播放一段关于DNA的科普视频，让学生在视觉和听觉上感受到DNA的神奇之处，引发他们的好奇心。
2.提出问题：在视频结束后，提出一系列与DNA相关的问题，如“DNA是什么？”“它在我们身体里有什么作用？”等，激发学生的思考。
冀教版英语九上Unit 5《Lesson 29 DNA—The Story of You》课件
2. own 的用法 1）adj. 自己的 （用在所有格后，加强语 气） Now ask the same questions about your own teachers. She makes all her own clothes. 2) vt. 有，拥有 Who owns the bike?
not only swim _________ but also skate. 1. I can _______ (不但……而且……) 2. 它不仅能说汉语而且还会说英语。 not only Chinese but also English He can speak ____________________________. am (be) a teacher. 3. Not only you but also I ____ 4. Not only I but also heknows _____ (know) the answer to the question.
Reading Task
Where does your DNA come from? Your parents. Is your DNA in every part of your body? Yes, it is.
Listen and Think
Do you and the students near you look the same? Are there differences between you and them? What can scientists do with “DNA”?
Lesson 29: DNA—The Story of You
冀教版九年级上册英语《DNA-The Story of You》Look into Science!
讲解来自《点拨》
知识点
2 in general 通常；大体上 eg：In general，their cars are very reliable.
通常，他们的小汽车是很可靠的。
考向
generally adv.一般地；广泛地；普遍地。 generally speaking“大体而言；概括来说”。 eg：Generally speaking，your idea is right.
few spelling mistakes. 3.现如今，不管是年轻人还是老年人都喜欢流行音乐。
__N__o_t_o_n_l_y___ the young __b_u_t_a_l_s_o____ the old
like pop music nowadays. 4.我认为财富与幸福没关系。
is related to
Your DNA has billions of instructions that explain why you are the way you are. It’s one of❽ the most amazing things on the earth!
This is the shape of DNA. Do you think it’s magic? Your DNAes from your parents.
讲解来自《点拨》
知识点 3 开门见山法：此句是一个主旨句，整个段 落围绕DNA写作，接下来整个文章都是围绕其写作的。
讲解来自《点拨》
知识点 4 except for 除……之外 eg：Your article is quite good except for several spelling mistakes. 除了几处拼写错误，你的文章很好。
冀教版九年级英语全册同步练习 Lesson 29 DNA The Story of You(含答案)
Unit 5 Lesson 29 DNA-The Story of YouⅠ. 根据句意及首字母提示完成单词。
1. I have a g idea of how to decorate(装饰) the house, but the details (细节) haven’t been decided.2. I haven’t got the original (原始的) letter, but I have got ac .3. I didn’t hear your sentence. Could you please r it, Miss Gao?4. The g gave his grandfather his arm and carefully supported him.5. Dr. Wang asked me to take the medicine according to the i . Ⅱ. 用括号内所给单词的适当形式填空。
6. It took the scientist half an hour (identify) what it was.7. It seems that these two events are (relate) to each other.8. All (live) things depend on the sun for their growth.9. This kind of skirt is much (expensive) than that one.10. It was (amaze) that the policemen caught the criminal (罪犯) just an hour later.Ⅲ. 根据句意及汉语提示完成句子。
11. Tom’s homework is quite good (除了) a few spelling mistakes.12. I (能) look after myself when I was five years old.13. The company produces (数以百万计的) cars a year.14. “(总的来说), German cars are very good,” Danny said.15. His heart attack could (与……相关的) his car accident last year.Ⅳ. 按要求完成句子。
冀教版九年级英语全册Lesson29DNA—TheStoryofYou优秀教学案例
（二）讲授新知
1.介绍DNA的基本概念，如DNA的定义、结构和组成单位。
2.讲解DNA的遗传规律，包括孟德尔遗传定律和染色体遗传。
3.介绍DNA在法医学中的应用，如DNA指纹鉴定和亲子鉴定。
4.通过示例，讲解DNA技术的原理和应用过程。
5.多元化的评价方式：本节课采用多元化的评价方式，既注重对学生的知识掌握程度的评价，也关注他们的能力发展和情感态度。通过学生的自评、互评和教师评价，全面了解学生的学习情况，为后续教学提供参考。
这五个亮点共同构成了本节课的教学特色，使学生在学习DNA知识的过程中，既能掌握学科知识，又能培养他们的实践能力、团队协作能力和科技伦理意识，为他们的全面发展和未来生活奠定坚实基础。
2.利用遗传实验，让学生亲身体验DNA的遗传规律。
3.组织学生进行小组讨论，探讨DNA在法医学中的应用及其意义。
4.鼓励学生进行课题研究，如调查DNA指纹鉴定在警方的应用情况。
（三）情感态度与价值观
1.培养学生对科学的热爱和好奇心，激发他们探索未知的欲望。
2.培养学生尊重事实、严谨治学的科学态度。
3.培养学生意识到科技发展对人类生活的影响，提高他们对科技伦理的关注。
三、教学策略
（一）情景创设
1.利用多媒体展示DNA相关的图片、视频等，为学生营造一个直观、生动的学习氛围。
2.设计有趣的实验，如DNA提取实验，让学生在动手操作中感受DNA的神奇。
3.创设真实情境，如模拟警方侦查案件，让学生亲身体验DNA技术在实际生活中的应用。
4.引导学生关注科技发展对社会的影响，引发他们对DNA技术伦理的思考。
4.培养学生学会关爱他人，增强他们的社会责任感。
新冀教版九年级英语Unit 5 Lesson 29教学课件
except意思是“除……之外”，它要求排除 的是 同类。另外，except一般不用于句首。 We all went to the zoo except Li Ming. 除了李明以外，我们都去了动物园。 I did nothing except watching TV yesterday. 昨天，我除了看电视以外，什么也没干。
Unit 5 Look into science
Lesson 29 DNA——The Story of You
What do you know about DNA?
What can scientists do with DNA?
Words
DNA blueprint general complex twin repeat 脱氧核糖核酸 n. 蓝图 adj. 一般的；普遍的 adj. 复杂的 n. 双胞胎之一；孪生儿之一 v. 重复；复述；背诵
5. Your DNA has billions of instructions that explain why you are the way you are. 你的 DNA 中有数 万个指令，来解释你为什么 是现在这个样子。
句末的you are是the way的定语从句。the way的定语从句引导词可用in which,或用 that, 也可以不用引导词。way在本句中的 意思是“情 况；状态”。例如： “How long has he been this way? the doctor asked. 医生问：“他这种情况有多久了 ？ ” The business is in a poor way.生意境况不佳。
冀教版英语九年级全一册 Unit 5：Lesson 29 DNA—The Story of you
九年级Lesson 29 DNA-The Story of You教案教师：Teaching Content:Mastery words and expressions: generally, twin, clone, not only…but also Oral words and expressions: blueprint, identical, egg, identifyTeaching Aims:1. Know how to write a passage on science.2. Learn something about DNA.3. Know more about our body.Teaching Important Point:1. Master the words and expressions of this lesson.2. The ability and inability.3. The use of coordinating conjunctions.Teaching Difficult Point: The usage of DNA.Teaching Preparation: picturesTeaching Aids: flashcards, audiotape, picturesType of lesson: new lessonTeaching Procedure:Step1.LeadingLead in the text by discussing what DNA is. Divide the class into several groups. Then talk about the subject for several minutes. Then one of the groups presents their opinions in front of the class.Step2. Listening task:Listen to the tape and fill in the blanks with the correct words you hear.1. Generally speaking, a ______ is a drawing.2. ______ for identical twins, each living thing has its own unique DNA. Play the tape once. Then let the students try to finish the task in class in oral.Step3. Reading task:Read the text quickly and answer the following questions:1. Where does your DNA come from?2. Is your DNA in every part of your body?Finish the reading task in class in oral. Try to get more information about the text at the same time.Step4. Read the text again.Find the sentences with the new words. Try to create situation about the new words. Then make sentences with the new words. If someone can make a whole story with the new words that we learn in this lesson, the teacher must encourage her. The sentences with the new words:1. Generally speaking, a blueprint is a drawing.2. Identical twins are two children that grew from the same egg.3. They are clones.4. From your DNA, scientists can identify not only you, but also people related to you.Step5.Let some students tell some details about the text.1. What is DNA?2. Where is your DNA from?3. What is DNA used for?Step6. Come to “LET'S DO IT”.Finish the task with a partner. Find the things about you that show your parents' DNA. Talk about if for a while. Then let some volunteers come to the front to talk about the subject.Step7.Homework1. Finish off the exercises in the activity book.2. Go on the next reading in the student book.Summary:You look like your father or your mother. That identifies the DNA of your body from your parents. DNA is very fascinating. Each living thing has its own unique DNA. Try to find more ways to use the DNA in many fields. Discuss the use of DNA in this class. Make full use of it to help more people in the world in more fields.。
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14-15冀教九年级Lesson29练习
Ⅰ、根据句意及首字母提示完成单词。
1、I have a g idea of how to decorate(装饰) the house, but the details(细节) haven’t been decided、
2、I haven’t got the original (原始的) letter, but I have got a c、
3、I didn’t hear your sentence、Could you please r it, Miss Gao?
4、The g gave his grandfather his arm and carefully supported him、
5、Dr、Wang asked me to take the medicine according to the i、
Ⅱ、用括号内所给单词的适当形式填空。
6、It took the scientist half an hour (identify) what it was、
7、It seems that these two events are (relate) to each other、
8、All (live) things depend on the sun for their growth、
9、This kind of skirt is much (expensive) than that one、
10、It was (amaze) that the policemen caught the criminal (罪犯) just an hour later、Ⅲ、根据句意及汉语提示完成句子。
11、Tom’s homework is quite good (除了) a few spelling mistakes、
12、I (能) look after myself when I was five years old、
13、The company produces (数以百万计的) cars a year、
14、“(总的来说), German cars are very good,” Danny said、
15、His heart attack could (与……相关的) his car accident last year、
Ⅳ、按要求完成句子。
16、热可以与光以同样的方式传播。
Heat may travel in manner light does、
17、不仅就是我,我妹妹也喜欢打乒乓球。
I my sister enjoys playing ping-pong、
18、她们还没决定什么时候举行运动会。
They haven’t decided the sports meeting、
19、学习新单词非常重要。
is very important、
20、我认为您的问题可以立刻解决。
I think your problem can be solved 、
Key:
1、general
2、copy
3、repeat
4、grandson
5、instructions
6、to identify
7、related 8、living 9、more expensive
10、amazing 11、except for 12、was able to
13、millions of 14、In general 15、be related to 16、the same; as 17、Not only; but also 18、when to hold 19、Learning new words 20、at once。