2017-2018学年高中英语人教版必修三教学案：Unit 4 Section 3 Word版含答案

Ⅰ.单词拼写1．This theory (理论) is helpful to explain how the universe began.2．Across the globe (地球), sea level varies by hundreds of feet.3．The little boy is interested in astronomy (天文学)．4．He often says that he doesn't believe in any religion (宗教) and only believes in himself. 5．Unlike (不像) his brother, he is talkative and has a sense of humour.6．If you multiply (乘) two and three, you will get six.7．The big project has cost almost as much as one billion (十亿) dollars.8．Oxygen (氧气) is a kind of gas that is necessary for animals and plants to live.Ⅱ.拓展词汇1．violence n．暴力→violent adj.猛烈的，激烈的→violently ad v.猛烈地，激烈地2．harm n．伤害，损害→harmful adj.有害的3._exist v i.存在，生存→existence n．存在4．puzzle v t.使迷惑→puzzled adj.迷惑的→puzzling adj.令人迷惑的5．religion n．宗教，宗教信仰→religious adj.宗教的，宗教信仰的[巧记单词]Ⅲ.补全短语1．in time及时；终于2．be fundamental to 对……(来说)是基本的3．lay eggs 下蛋4．give birth to 产生；分娩5．in one's turn 轮到某人；接着6．prevent ... from ... 阻止；制止1．[教材原句] The earth became so violent that it was not clear whether the shape would last or not.地球变得激烈动荡，不知道这个固体形状是否会继续存在下去。

课 题： Unit4 Astronomy: the science of the starsPeriod 1 Wanrming Up and Reading教课目的： 1. Develop students ’reading ability and let them learn differentreading skills.2. Enable students to know about the development of the earth.教课难点： 1. Enable students to understand the passage and know aboutthe development of the earth.2. Let students learn how to use different reading skills fordifferent reading purposes.Skimming, discussion, individual work and group work.【自研课导学】1. Let students learn the useful words and expressions in this part: astronomy,system, religion,theory, atom, billion, globe, violent, atmosphere.2. Get students to learn about the development of the earth.【展现课导学】Step1: Leading-inHave a free talk with students.1. Let students discuss the following questions:Who are our ancestors?Do you know what it was like before life appeared on the earth?Do you know how life began on the earth?Do you want to get more information?2.Tell students:Today we will learn something about how life began on the earth. Turnto Page 25. Let ’s come to Warming Up first.Step2: Warming up二次备课 Let students think about the following questions and then discussthem with their partners.1 教课方法 : 教课过程：1.In our solar system eight planets circle around the sun. What are they?Can you match the names with the planets?(P25)2.What interests you in astronomy? Do you know any questions that astronomersare interested in?Step3: Pre-reading1.Get students to discuss the questions with their partners.1)The origin of life on earth is a question that interests astronomers.Whatdo you know about it?2)Each religion and culture has its own ideas about how life beganon earth.What do you know about them?2.Ask them to read the title and look at the pictures. Predict what thereading will be about.Step4 : Reading1. Fast reading :ScanningGet the students to read the passage quickly . Give ten minutes tolook through the whole text and answer questions:1). What is the passage about?2). What’sthe main idea of the text?2.Detail readingChoose the best answer to each question according to the text.1). What is important for the beginning of life?A. The water on the earth.B. The earth’s atmosphere.C. The form of forests.D. Dissolving harmful gases.2)Which of the following appeared on the earth first?A.Insects.B.Reptiles.二次备课C.Amphibians.D.Shellfish and fish.23)Which of the following statements true?A.Water still exists on Mars.B.The earth’s atmosphere is made up of oxygen and nitrogen.C.The earth had dissolved the harmful atmosphere into the oceans and seas.D.Plants provide oxygen to the earth.4)What is the passage mainly about?A.The appearance and development of life on the earth.B.The birth of the earth.C.Why dinosaurs died out.D.The fact that human begings caused global warming.Suggested answers:(1) A (2) D (3) D(4) A【板书设计】_____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________【教课反省】_____________________________________________________ _____________________________________________________ ____________________________________________________3。

教学设计ReadingTeaching goals：Knowledge aims：1．Get students to learn the useful words and expressions in this part：astronomy，system，religion，theory，atom，billion，globe，violent，carbon，atmosphere，unlike，fundamental，harmful，acid，chain，multiply，oxygen，exist，thus，dioxide，puzzle，solar system，in time，lay eggs，give birth to，in one's turn，carbon dioxide，prevent…from 2．Let students learn about the development of the earth and life.Skill aims：1．Improve students' reading comprehension ability.2．Enable students to know about how the earth came into being and the development of life.Moral culture aims：1．Train students' interest in science and stimulate their love for astronomy.2．Have a deep understanding of the importance of protecting the environment.Teaching important and difficult points：1．Discuss the development of life.2．What will our future be like if the earth becomes too hot to live？And what can we do to prevent such serious situation from happening?Teaching methods & strategies：1．Task-based method & skimming and scanning.2．Asking-and-answering activity to check students' understanding of the text.3．Observation strategy & co-operation strategy for discussion.4．Strategies of finding information by reading.5．Individual，pair or group work to finish each task.Teaching aids：A recorder MultimediaTeaching procedures：tep 1 Lead-in（individual work）T：As we all know，the earth has been existing for billions of years.Did_human_beings_live_on_the_earth_when_the_earth_came_into_being?If not，where do human beings come from？Or who were our ancestors?S1：Monkeys!S2：Beijing Ren who lived many years ago.S3：Apes（类人猿）．S4：Gorillas（大猩猩）．S5：Chimpanzees（黑猩猩）．T：Very good.They belong to primate（灵长目动物）．Another question：Do you know what plays the most important part in our body？（Water or fat？）T：Water.Then do you know how did water come into being on the earth?Ss：No.Step 2 Fast reading（task 1）Read Paragraphs 1-3.After reading，let students watch the video of “Big Bang”，and then answer the question “How did water come into being on the earth？”（individual work）Possible answer：The explosion of the earth produced water vapour，which turned into water when the earth cooled down.Read the first three paragraphs again with the questions on the screen：1）What is the earth's atmosphere made up of?2）Why was the earth different from other planets?A．It produced a lot of heat.B．The water remained.C．Water disappeared. D．It was the oldest planet.3）Why was water very important for the beginning of life?When students meet some difficulty，the teacher can give them some hints.For example：What is the earth's atmosphere made up of?（Show students some pictures about the earth's atmosphere.）Do the exercises.（group work）Check the answers.Possible answers：1）Carbon，nitrogen，water vapour and other gases.2）B3）Water allowed the earth to dissolve harmful gases and acids into the oceans and seas.That made it possible for life to begin to develop.Step 3 Intensive reading（task 2）T：When water came into being on the earth，life began.Then do you know how the lifedeveloped?Read the whole text and finish the chart.（pair work）Development of LifeAsk two students to write their answers on the blackboard.Possible answers：1．dust2．globe3．atmosphere4．Water5．plants6．oxygen7．land8．amphibians 9．dinosaurs10．mammalsStep 4 Have a discussion（task 3）Through the writer's description，we learned the development of life.It's a long and slow process.And the earth is the best place for all the living things to live on.But human beings didn't take good care of it.Listen to the last paragraph twice with books closed.Choose the best answers.（individual work）1）What problem is caused by human beings?A．They exist everywhere on the earth.B．They cause global warming.C．They find new methods of growing crops.D．They enjoy hunting and fishing.2）From the last paragraph we can infer that the author is a little ______.A．happy B．careless C．worried D．excitedPossible answers：1）B2）CNow we learn that human beings cause global warming.That is the green house effect.If the earth may become too hot for the lives on it，what will our future be like？And what can we do to protect our earth?Please have a discussion according to the questions.（group work）Questions：1）What will our future be like if the earth becomes too hot to live?2）What can we do to protect our earth?Notes：The green house effect is the main cause of the melt of iceberg，drought，floods and insect pest.Everyone on the earth must take action to protect our earth.For example，we can plant many trees.We must do our best to stop polluting our environment.Many new laws should be passed to place strict control over industrial pollution.Educate people in fighting pollution.Ask some groups to present their opinions.Step 5 Self-assessmentWrite down your opinions according to the questions in the card.1）Can you give a brief introduction to how the universe developed，how life began on the earth and the development of life in your own words?2）What strategies of reading have you learned in the class?3）Are you active in the class?4）What problems did you have in reading?5）What help do you need from the teacher?Step 6 Homework1）Please try your best to retell the passage in your own words.2）Write a short passage according to what we have discussed.The title is “How to Protect the Earth”．About 120 words.。

Unit 4Astronomy: the science of the stars教学模式介绍探究式教学模式是指在教学过程中，要求学生在教师指导下，通过以“自主、探究、合作”为特征的学习方式对当前教学内容中的主要知识点进行自主学习、深入探究并进行小组合作交流，从而较好地达到课程标准中关于认知目标与情感目标要求的一种教学模式。

其中认知目标涉及与学科相关知识、概念、原理与能力的掌握；情感目标则涉及思想感情与道德品质的培养。

探究式课堂教学模式的教学环节：创设情境——启发思考——自主（或小组）探究——协作交流——总结提高设计思路说明1. 总体思路以英语探究式教学为指导思想，将教学内容和学生实际及热点话题相结合，按照新课标对教学的要求来设计本节课的教学。

教学中以智慧教学手段为辅助教学手段，以任务型教学法为主要教学方法进行教学。

所设计的任务主要有三个：一是基本课文阅读任务——运用有效阅读技巧，充分理解课文，输入信息、整合信息；二是语言交际任务——运用所学语言进行现实交际，选择信息，输出信息；三是创造性任务——对文学作品中人物性格的理解。

另外，通过课堂上的头脑风暴、个人阅读活动、双人活动和小组讨论等活动，激发学生学习兴趣和求知欲，开启学生思维之门，培养学生相互合作精神。

让学生在真实的活动中，亲身体验、相互合作。

所有活动的展开力求环环相扣，整节课生动流畅，从而实现本节课的各个教学目标。

本节课所用到的教学方法有：1．自主探究法：从探究中发现问题，分析问题，从而提高学生解决问题的能力。

2．合作学习法：让学生在讨论交流中取长补短，培养学生的合作竞争意识。

3．自主学习法：对于一些内容，同学们通过思考老师提出的问题、观看微课视频自主学习。

使学生由“学会”变为“会学”，通过这些方法，孩子们提高了自主学习和独立思考的能力，学会了总结。

2. 各环节教学思路【创设情境】通过Brainstorm方式，让同学们了解the black hole，the big bang，Solar System，eight planets等天文学知识。