unit20-lesson-3-Scientific-Breakthroughs教案

UNIT20lesson3ScientificBreakthroughsTeachingAims:TomasterproperreadingstrategiesfordifferenttasksandexpandknowledgeofscienceandtechnologyToimprovepracticalreadingskillsandability,totalkaboutthetopicofscientifiandtechnologyTogetfamiliarwithscientificbreakthroughsinthelastcenturyandtofosterinterestonareaofscienceandtechnologyTeachingdifficulties:learntousereadingstrategiesTeachingmethods:1.Skimming,detailedreadingandscanning2.Asking-and-answeringtochecktheSs’understandingofthepassage3.Individual,pairandgroupwork4.DiscussingTeachingAids:arecorder,computerandprojectorTeachingprocedures:Ⅰ.GreetingsⅡ.Lead-inAsstudentsof21stcentury,youmustbefamiliarwithscientificbreakthoughs,aren’tyou?Sciencehaschangedourlifealot.Lookaroundyou,canyoutellmewhatisthescientificdiscoveries?Thecomputer,lamp,massmedia,airconditioner…theyareallscientificdiscoveries,breakthroughs.Askstudentstoobservetheclassroomandfindoutwhatarescientificdiscoveries.Objective:motivatestudents’interestofthetopicandliveuplesson.Today,we’lltalkaboutscientificbreakthoughs.(板书)takeoutyourbookandturntopage24.Ⅲ.Pre-readingBeforewereadthepassage,pleaselookatthepictures,guesswhatdoesitmaytalkabout?Whatdoyouthink?Whatisyouropinion?Well,whatisitreallyabout?Askstudentslookatthepicturesandguessthegeneralideaofthetext.Objective:toprovokestudents’interestsonthetext.Ⅳ.While-reading1.Skimming:Now,Iwillgiveyou2minutestoskimthepassage,youcanjustreadthefirstsentenceofeachparagraph,andtellmethegeneralideaofthetext.Timeisup.Lookatthestudentsheet,item1.Pleasetellmewhatisthemainideaofthepassage?Yes,itmainlytalksaboutpioneersofscienceinthe20thcentury.Showstudentsthereadingstrategyforgeneralidea.ThenstudentsreadthetextandChecktheiranswers.Objective:todevelopstudents’abilitytogeneralizeinformationquickly.2.ScanningNow,Iwillgiveyouanother10minutestoscanthepassage.Afterit,Ihave2tasksforyou.Task1,howmanypartscanthispassagebedividedinto?Task2,workinpairsandfillinthetableinyourstudentsheet.Finished?Let’schecktheanswer.Thepassagecanbedividedinto…3parts,verygood!Introduction(para1-2)Body(para3-6)Conclusion(para7-8)Well,let’smoveontothenextitem-blank-filling.NameTimeDiscoveryHowInfluenceAreyouclearaboutthispassage?Herearethreewordsfromthepassage,pleaseworkinpairs,refertothetextandmatchthemwiththeirmeanings.Finished?Let’schecktheanswer.volunteer?Welldone.It’sBAC.Task1:askstudentstoworkinpairsandfindoutthestructureofthetext.Task2:workinpairs,findoutthepioneers,theirdiscoveries,whentheydiscoveredthem,howthediscoveriescameabout,andtheirinfluence.Task3:workinpairsandmatchthevocabularieswiththeircorrespondingmeaningreferringtothetext.Object:todevelopstudents’abilitytosearchandprocessinformationandguessthemeaingofwordsaccordingtothecontext.3.DetaiedreadingNowpleaseturntopage25.LookatExercise4.thereare12statementsintheexercise.Aretheytrueorfalseornotmentioned?Pleaseworkinpairsandunderlinethekeywordsofeachsentence.Forexample,thefirstsentence…Whatarethekeywords?TheyareEinstein,atwork,equation.Ok,theothersentencesareleftforyou.I’llgiveyou5minutestounderlinethekeywordsandjudgeitistrueorfalseorNI.Remember:youmustbaseyourdecisiononthetext,notwhatyouhavelearnedbefore.Finished?Let’schecktheanswer.Item1,isittrueorfalseorNI?...yes,it’sfalse.Wheredidyoufindtheinformation.It’sinparagragh3,line4.Excellent!Howdoyoucorrectit?...Einsteinwasrockinghisbabywhenhethoughtoftheequation.Now,pleaseturntopage24.Lookatthereadingstrategiesintheleftcorner,whatstrategieshaveweused?Good,wehaveusedallofthem.Theyarehelpful,right?Now,enoughforthetext.Pleaselistentothetape.AskstudentstoworkinpairsanddoExercise4,underlinethekeywordsinthestatements,findrelevantinformationinthetext,basedecisionsonthetext,judgeT,F,orNI,andcorrectthefalseones.Thenreadthereadingstrategiesandfindoutwhatstrategiestheyusedwhilereading.Objective:letstudentslearntogetandprocessinformationusingreadingstrategiesinexploration,andlearncooperationinstudy.Ⅴ.Post-readingUntilnow,wehavebeenfamiliarwithmanyscientistsandscientificbreakthroughs.Pleaselookatthestudentssheet,Ihavethreequestionsforyou,Workingroups,4studentsinagroup,chooseonetopicyouareinterestedinanddiscussit.Thenchooseonerepresentativetogiveusapresentation.Time’sup.Volunteer?Thankyou!Nextclass,we’lllearnthelanguagepointsofthispassage.Doyouhaveanyquestionsofthisclass?Ifnot,AskstudentstodoExercise6ingroups,findatopictheyareinterestedin,choosearepresentativeofeachgrouptogivepresentations.Objective:toimprovestudents’overallEnglishcompetency,developtheirabilitytoshowopinionandtalkthetopicofscienceandtechnology.HomeworkPickupascientistyouadmire,searchinformationabouthimontheInternet,andwriteanessaynolessthan150words.