高中英语-How-Life-Began-On-The-Earth教学设计学情分析教材分析课后反思

必修三Unit4"HowLifeBeganOnTheEarth"教学设计TeachingAims：Todevelopthestudents’readingabilityTolearnsomethingaboutastronomyToarousethestudents’strongemotionof“Protectingourearth”Teachingaid:AcomputerwithInternet&thenetworkcoursewareTeachingprocedure:Step1preparationbeforeclass&leadinTogetthestudentsfamiliarwiththeknowledgeabouthowtheearthcameintoexistenceandhowlifebegan.Therearethreedifferentopinionsonthispoint.OneisfromChinesefairytalethatPanguseparatedtheheavenfromtheearthandnvwamadethehumanbeings,anotherisareligiousideafromwesternerswhichholdsthatit'sGodwhocreatedtheworld,thethirdisthescientifictheoryabout"BigBang"andtheevolutionoflifefromsimplethings.Inthisnetworkcourseware,Idesignedthepartcalled"KnowledgeBackground"(背景知识)。Itintroducesthecurrentastronomyinformationathomeandabroad,aswellasavideowhichcanhelpstudentsestablishascientificoutlookonthetopicofthisunit.Thencomesthe"lead-inpart".I'llbeginthelessonwithanothersplendidvideo.It'llsurelyarousethestudents'interestin"Wherearewefrom?""Howlifebeganontheearth?".Step2ReadingThissectionisthemostimportantoneinthislesson.Here,Idividedtheactivityintothreeparts,including"Skimming""Detailedreading""Athirdreading".Wecanclickcorrespondingitemtobrowsethewebpageandcompletethetasksonit.Activity1:Skimthepassageandmatchthemainideawitheachparagraph.Activity2:Readthetextcarefully,andputthefollowingwordsincorrectorder.Activity3:Readagaintogetmoredetailedinformationandanswertherequiredquestions.Whatintheprocessdoyouthinkisthemostimportant?Why?(Showyourownopinions)Whatisthedifferencebetweenreptilesandmammals?Whatproblemiscausedbyhumanbeings?Withthehelpof"Thecontentofthetext"(课文内容)inthecourseware,thestudentscanfullyunderstandthecontentofthistext.Theycanalsotraintheirlisteningwhentimeavailable.Step3DiscussionAimingat"howtosolvetheproblemcausedbyhumanbeings",thestudentsshouldholdadiscussion.Thewholeclasscanbedividedintoseveralgroupstofinishthetaskthroughco-operationalwork.Theyshouldbeencouragedtodelivertheirownopinions.Step4Homework1、Workingroupstofinishacompletereportonhowtolivea“lowcarbon”life;2、Trytoretellthewholeprocess,usethefollowingconnectors.However,afterthat,next,later,finally,thus,asaresultofthisApartfromthehomeworkabove,IdesignedtheExtracurricularpracticesandreadingmaterialsintheware.Thestudentscanbrowsethewebpagestofinishthemandcheckanswersbythemselves.学情分析“HowLifeBeganOnTheEarth”这一话题虽然有趣，但本文的文体属于科普类说明文，内容抽象，用词多专业术语，阅读本文对高一学生来说有一定的难度。不过本文以时间为线索，使得学生较易读懂本文的内容；通过课前对本单元背景知识的准备和预习，学生已经对本单元重要的单词、短语有了初步的了解和记忆；学生语言综合运用能力不是很好，需要给与一定的语言指导和帮助；通过对本文的阅读，学生不仅可以了解地球上生命的起源以及发展过程，还可以掌握一些相关的语言知识。效果分析本节课主要围绕“HowLifeBeganOnTheEarth”这一主题展开教学活动。通过学生”课前课中课后”多种多样的阅读活动，让学生在理解掌握地球的形成、生命的进化，实现了本节课的知识目标，提高了学生的阅读理解能力，激发学生“保护地球”意识情感。学生在各项学习活动中参与度高，态度积极，愿意学习，对课堂学习内容把握到位。尤其是在小组活动中，每位成员都表现积极，能初步运用英语交流，达到语言学习课的最终目的——运用英语思考的能力。教材分析本单元的中心话题是“天文学”，内容涉及太阳系、地球上的生命起源、宇宙大爆炸、月球探秘、黑洞效应等，主要内容围绕地球上生命的起源展开的。本话题紧扣时代主题，能激发青少年崇尚科学、探索未知、敢于创新的热情，本次阅读课“HowLifeBeganOnTheEarth”通过对宇宙大爆炸理论进行科学性分析，推断出地球上生命的由来以及生物进化的过程。这篇文章共有5个自然段，按照时间的先后顺序一一展现了地球形成以及生命进化的各个阶段，文章篇幅较长，理解起来不很容易，需要要学生在讲课前头了解相关背景知识和相关词汇，通过课堂阅读练习加以引导。评测练习一、根据句意填入单词或短语的正确形式1.Theprofessorhasbroughtinagood（系统）ofteachinglanguagefromabroad.2.Therearemanytabouttheoriginoflife.3.Childrenshouldnotbeallowedtowatchvmovies.4.Ibelievetheaffairishtothecompany.5.Theoldladyeonlyoncoffeeandbread.6.Shelistenedwithapexpressiononherface.7.Themoon’spontheseacausesthewaves.8.Ihadintendedtocatchtheearlytrain,butIdidn’tgetup(及时)9.Whydoyouwanttokillthehensthat（下蛋）everyday?10.Manywomenplantogbabiesthisyear.11.Doctorssaymanydiseasescanbepspreadingbywashingourhands.12.Istayeduplastnight,sotodayIcan’tc.13.Nyouhavegrownup,youshouldnotdependonyourparents.14.DoyouknowwhentheSecondWorldWarb?15.Wforthecarswhenyoucrossthestreet.二、Unit4词汇串记Ourgeographyteachersaystheearthisonlyoneoftheplanetsofthegiant.otherplanets,lifeontheearth,butlife’soriginisstillaDifferentandcultureshaveseparateideas.Theteachersaysitmaybedividedintofourstages.Thefirststageisabouthowtheuniversebegan.Awidelyacceptedcanexplainit.Afterthe“BigBang”begantoformandcombinetocreatestarsandotherbodies.Thesecondstageishowtheearthformed.Between4.5and3.8yearsago,cloudsanddustinspacesettledintoasolidTheearthbecamethatitoftenexploded.Theandwaterappeared.Waterisamatterforlifetoexistontheearth.Italsodissolvesgasesandacids.Thethirdstageisaboutplants’andanimals’appearance.Atfirst,plantsinthewaterappearedandTheyproducedwhichencouragesanimalsinthewatertoexist.Later,greenplantsonthelandcausedanimalsonthelandtoappear.Theyfirstandbecamebabies.Later,mammalsbabiesdirectly.Thelaststageisthathumansbecamethemostimportantanimalsontheearth.Weputtoomuchcarbondioxideinthetocauseglobalwarming.Wemusthowthingswillgoandmakelawstotheearthbecomingtoohot.wehavetakenmeasures,