Unit 3 Inventors and inventions 教案1（人教版高中英语选修八)5页

Unit3InventorsandinventionsheFirstPeriodSpeakingTeachinggoals教学目标1.Targetlanguage：discovery,application,evaluate,presentation,alternative,messenger,gettogether,makeacasefor,addup2.AbilitygoalsEnablethestudentstotalkaboutinformationanddifferent.3.LearningabilitygoalsHelpthestudentslearnhowtotalkaboutinventionsanddiscoveries.Teachingimportant&difficultpointsHowtotalkaboutinventionsanddiscoveries.TeachingmethodsDiscussion.TeachingaidsAcomputerandaprojector.Teachingprocedures&waysStepIWarmingupTalkaboutinventionsanddiscoveries.T:Theimportanceofinventionstosocialprogresscanneverbechanged.Eachinventioncarriestheworldastepforwardandprovidesstimulationforlaterones.Whitinventionsturningupallthetime,ourworldisalwaystakingonanewlook.Butdoyouknowwhataninventionis?S1:ThecreationofsomethingnewS2:Acreation(anewdeviceorprocess)resultingfromstudyandexperimentation.S3:Thecreationofnewthings.…Askthestudentstotalkaboutthepictureswiththeteacher’shelp,andthendiscussthe firsttwoquestions.T:Andwhatisadiscovery?What’sthedifferencebetweenadiscoveryandaninvention?Nowlookatthepicturesonpage1.Workinpairsandtalkaboutthethreedifferentthings,tellingthemapartandgivingreasons.Showthefollowing.1.Whichothesepicturesshowinventions?Doesanyofthemshowdiscoveries?2.Workouttworulesthatwillhelpyoudecidewhatisadiscoveryandwhatisaninvention?S1:Ithinkthefirsttwoareinventions,i.e.theamphibiouscarandStevenson’s“Rocket”whilethelastpictureabouttheDNAisakindofdiscovery.Becausethefirsttwoproductswerequitenewtopeopleatthattimeandnoonehadeverseenordesignedsuchkindofvehiclesbeforethoughsomeothershadmadesimilarcarsormachineswhichhadlessfunctionsandadvantagesasthesetwo.IthinkthepictureabouttheDNAisakindofscientificdiscoveryinbiologybecausesuchcellsandtheirstructuredoexistinlivingcreaturesandtheyhavebeenfoundoutbyacertainscientistandaremadeknowntothepublicnowadays.SoIthinkadiscoveryissomethingexistingbeforebutunknownwhileaninventionissomethingunknownandnotexistingbefore.S2:Ithinkthefirsttwopicturesshowusgreathumaninventionsaboutthetransportationbecausetheywereinventedbypeopleforcertainpurposesandtheyhadspecialadvantagesandcouldsatisfypeople’sneedsinsomeways.OntheotherhandthethirdpictureshowingtheformationofDNAisakindofdiscoverybecausethesespecialcellsexistandfunctioninthebodyoflifeallthetimenomatterwhodiscoversitorwhenandwhereitisdiscovered.Inmyopinionadiscoveryissomethingfoundoutorbroughttoviewnowbutitwasunknownbeforewhileaninventionissomethingcreatedordesignedbypeople,whichiscompletelynewnotonlynowbutinthepast.T:Well,fromthesepictureswecanseethatthereliesdifferencesbetweenadiscoveryandaninvention.Therearecertainrulesorquestionsyoushouldpayattentiontowhiledistinguishingthem.Diditexistinthepast?Isitcreatedordevelopedbypeople?Aninventionissomethingthatiscreatedbyahumanbeing,suchasthelightningrod.Tothecontrary,adiscoverymerelymakesknownsomethingthatalreadyexistedinnature, suchasthediscoveryontheNewContinentbyColumbia.OK.Let’sgoonwithsomeotherquestionsofthispart.Youmaytalkwithyourpartnerfirstbeforewehaveacheckfiveminuteslater.Showthefollowing.Whatmoderninventionsdoyouknow?Describethemtoyourpartnerandhowusefultheyareinlifetoday.S1:Adidas1isthethinkingshoeswithabuilt-inmicroprocessorthatdecideshowsoftorfirmthewearerneedsthesupport.IthasbeenchosenbyPopularSciencemagazineasthebestrecreationinventionof2004.Itisverycomfortabletowearitalldaywithoutworryingaboutyourtoesbeinghurtandyoucanadjusttheheightandstiffnessaccordingtoyourdemandswheneveryouwantandwhereveryougo.Thusitisaverypracticalchoiceforboththeyoungandtheoldwhenhavingexcitingsportsoutdoorsorrestingathomeduringholidays.S2:Cameraphoneshaveopenedupanewwaytocommunicate.Becausemanyofthemlooklikeregularcellphones,youcansnappicturesasdiscreetlyasanyspyand,withthepushofafewbuttons,popthemintoane-mailoruploadthemtotheWebinlessthanaminute.NowiresortotheWebinlessthanaminute.Nowiresorcomputerhookupsnecessary.Tobesure,mostcameraphonesenduptakingpicturesoffriendsfamily,babiesandpets.ButtheyhavealsobeenusedtosnappicturesofVIPsatprivateparties,copyrecipesfromcookbooksatbookstoresandevendocumentcrimesinprogress.Butwithanestimated80millioncameraphonessoldin2003,6millionintheU.S.alone−thecatmayalreadybeoutofthecamerabag.Likeitornot,thesecameraphoneshavebeenverypopularandwidelyusedbypeopleeventoday.S3:AkindofrobotheartcalledAbioCorwasinventedin2001.OnJuly2,2001,the59-year-oldgrandfatherandretiredlibrarianRobertToolsbecamethefirsthumantogetone.It’sbeenlongsincetheoperation,andTools’newheartisstillbeating.Hecanwalkacityblockwithoutstoppingandhe’sevenmakingplansforthefuture.Thoughnoteverybodyneedsanewheart,hundredsofthousandseventuallymay.Norwillanartificialheartridtheworldofsicknessorpovertyorterror.Butsometimesitreallyhelps. T:Verygood!Iamgladtoseethatallofyouhaveknownsomanymoderninventionsbothathomeandabroadandyouhavethoughtalotaboutthem.It’scertainthatmoderndiscoveriesandinventionsdohavegreateffectsinpeople’slifeandcanalwaysrepresenttheadvancedscienceandtechnology,soyoushouldtodistinguishthemandmakegooduseofthem.StepIITalkingT:Supposeyouareworkingforamobilecompany.Itisyourjobtosuggestnewwaysofdevelopingamobile.Inpairsdiscusssomenewapplicationsofamobile.Makealistoftheonesyoulikeandthatseemthemostuseful.Chooseoneyoubothlikeandthinkwillbepopularwithotherpeople.Nowworkingroupsoffourtodiscussthequestion.S1:Isuggestthenewapplicationsofmobileshouldbe:portableentertainmentplayers,cameras,membershipandloyaltycards,guidebooks,maps,tickets,watches,anddevicesforaccessingeverythingfromnewstocorporatedatabases.Amongthem,weliketheapplicationsofdevicesforaccessingeverythingfromnewstocorporatedatabases.Weboththinktheyareusefulandwillsoonbepopularwithothersinthenearfuturebecausetheabilitywillenableawholeclassofworkerstorelylessontheirmemoryandmoreontheircompany’sandevenworld’sknowledgemaintenance,salesconstruction,transportation,taxicabdrivers,andmanyotherworkersspendagreatdealoftimefromoffices.Thus,whentheyneedinformation,theymusteitherhaveitintheirheadsorstopwhattheyaredoingandmakeaponecall.S2:Ithinkthenewmobilescanbedevelopedbetterwith4Gtolistentotheradio,watchTV,playgames,doshopping,chatontheQQ,surftheinternet,controltheelectricalequipmentathomeinthedistance,giveoffharmlessraysandbeusedascomputerswithspecialoperatingsystemswhichcandobusiness,havefunandworkasintelligentP4computers.Amongthem,welikethenewapplicationofsurfingtheinternetanddoingshoppingandweboththinktheyareusefulandwillsoonbepopularamongyoungstersbecauseitisveryconvenientforpeopletofindvarioususefulinformationwheneverandwhereverpossible.Astherearedifferentkindsofgoodstochoosefromonlineandit’sveryfunnyandexcitingtomakechoicesandbuywhatweneedatareasonableprice withoutgoingoutandbargainwithsellersinthemarkets.…T:Verygood.Nowgettogetherwithanotherpairtodiscusswhetheryoursuggestionisagoodone.Makeacaseforyouridea.Lettheotherpairevaluateit.Thenswapsothatyouevaluatetheiridea.Decidewhichideayoulikebetterandpreparetoexplainit.Thenpresentittotheclass.S1:Ithinkthefirstclassmate’sexpectationthatthemobilephonescandosomuch,maybemorethantheycanoffer.Themobilephonesusuallyhavelimitedsizeandcapacity.SoIthinkitwilltaketimebeforethemobilesaredesignedtomeethisneeds.S2:Ithinkit’spracticalandmeaningfulforthesecondclassmatetodevelopthemobilesinthatway.Thoughithasbeenusedinsomewaysbutwecandobetterbecauseeverydaywehavemuchinformationtolookforanddifferenttypesofthingstodoandthesmartmobilecanmakeitmoreconvenientforustoachieveourgoalsinlife.…