高中英语 4.3《Unit4 Key to exercises in the workbook (III)》课件 新人教版选修9

新课标人教版课件系列 高中英语 选修 模块 9 4 3 Experimentreports Writing LookatthepicturesinExercise1andguesstheanswerstothequestions Whatmaterialsarebeingusedinthisexperiment Whatdoyouthinkthepurposeoftheexperimentis Whatorderdoyouthinkthepicturesshouldgoin ListeningonP79 Numberthepicturesintheorderyouhearaboutthem 2 3 1 5 4 Listentothefirstpartagainandanswerthequestions Whatisthepurposeoftheexperiment Tofindoutthreeimportantconditionsthatseedsneedinordertostartgrowing 2 Arestudentsgoingtodotheexperimentingroupsorindividually Ingroups 3 Wherearethematerialsthatthestudentsneedtosetuptheexperiment Onthebench 4 Whatmaterialsdothestudentsneedtosetuptheexperiment Fourdishesandfourpiecesofcloth adishofseeds sometapwater someboiledwaterandsomecookingoil ThirdlisteningListentothefirstpartagainandcompletethetableofconditionsthateachdishofseedswasgiven tapwater warmtemperature oxygen tapwater coldtemperature oxygen nowater warmtemperature oxygen boiledwater oil warmtemperature nooxygen FourthlisteningNowlistentothesecondpartofthetapeinwhichtheclassdiscussestheresultsoftheexperiment Completethetableofresults Yes Becausetheyhadwater warmthandoxygen No Becauseitwastoocold No No Becausetheywerewateredwithboiledwaterwhichhasnooxygen Also theywerecoveredwithoilwhichpreventedoxygengettingtotheseeds Becausetheydidn tgetanywater Listentothesecondpartofthetapeagainanddiscussthequestion Whatwastheconclusionoftheexperiment Seedsneedwarmth waterandoxygentogrow AnexperimentonplantsPart1 Listentoateacher TH helpingherclasssetupanexperiment TH OK everybody thismorningwe regoingtodoanexperimenttofindoutthreeimportantconditionsthatseedsneedinordertostartgrowing LISTENINGTEXT Thematerialsareallonthebench Choosesomeonefromyourgrouptogoandgetfourdishesandfourpiecesofcloth adishofseeds sometapwater someboiledwaterandsomecookingoil Lookattheinstructionsontheboard Let sreadthroughthem One Putthepiecesofclothonthedishesandspreadtheseedsonthecloth LabelthedishesAtoD Two TakeDishAandwettheclothwithtapwaterandplaceitinawell airedwarmspot sobythewindowovertherewouldbefine Three TakeDishB wetitwithtapwaterandputitinthefridge Four TakeDishCandputitnexttoDishA Donotwaterit Five TakeDishDandwateritwiththeboiledwater ThendropasmallamountofoilontotheclothandputitnexttoDishC Six Leavethemallforafewdays OK nowyoucangoaheadandsetuptheexperiment Part2 Listentotheclassdiscussingtheresultsoftheexperiment StudentsincludeAndrew A Rosemary R andSandy S TH Right let stalkaboutwhat shappenedinourexperiment Whataretheresults Andrew A TheseedsinDishAhavestartedgrowingbutnoneoftheothershave TH Good WhydoyouthinktheseedsinDishBdidn tgrow Rosemary R Becauseitwastoocold TH That sright AndwhataboutDishC R Theseedsdidn tgetanywatersotheycouldn tgrow TH Yes Now DishDisinteresting Theseedsgotbothwaterandwarmthsowhydidn ttheygrow Anyideas Andrew A Well theseedsgotboiledwater TH So why sthatimportant Anyone Well boiledwaterhasnooxygeninitandseedsneedoxygentogrow AndWhatabouttheoil Sandy S Wouldn ttheoilmakesurethatnoOxygencouldgettotheseeds TH Excellent Welldone So what sourconclusionaboutthreeimportantconditionsthataseedneedsinordertostartgrowing S Thatseedsneedwarmth waterandoxygentogrow TH Verygood NowIwantyoualltowriteuptheexperimentinyoursciencenotebook Writingtask Whenwritinganexperimentreport youcanaskquestionsabout thepositionoftheheadings whattheheadingsare theirorder howtheitemsinthe materials sectionarepresented asalist whatthe procedure tellsyou thestepsyoucarryouttosetuptheexperiment thegrammaticalstructuresusedforeachsectionofthereport Outline Materials A B C D Aim Tofindoutthreeimportantconditionsthatseedsneedinordertostartgrowing 1 fourdishes 2 fourpiecesofcloth 4 sometapwater 3 someboiledwater 5 adishofseeds 6 somecookingoil Procedure Putthepiecesofclothonthedishes Spreadtheseedsonthecloth LabelthedishesAtoD 2 TakeDishAandwettheclothwithtapwaterandplaceitinawell airedwarmspot sobythewindowovertherewouldbefine 3 TakeDishB wetitwithtapwaterandputitinthefridge 4 TakeDishCandputitnexttoDishA Donotwaterit 5 TakeDishDandwateritwiththeboiledwater ThendropasmallamountofoilontotheseedsandputitnexttoDishC 6 Leavethemallforafewdays Results DishA DishB DishC DishD Conclusion Seedsneedwarmth waterandoxygentogrow Theseedsgrew Theseedsdidn tgrow Theseedsdidn tgrow Theseedsdidn tgrow Samplereport Ididtheexperimenttofindoutthreeimportantconditionsthatseedsneedinordertostartgrowing First Iputthefourpiecesofclothoneachdish spreadtheseedsontheclothandlabelthedishesAtoD ThenIplacedDishAinawell airedwarmspotbythewindow tookDishBandwetitwithtapwaterandputitinthefridge tookDishCandputitnexttoDishAwithoutwateringit FinallyIwateredDishDwiththeboiledwater droppedasmallamountofcookingoilontotheseedsandputitnexttoDishC Afewdayslater IfoundthatonlyDishAgrew SoIdrewaconclusionthatseedsneedwarmth waterandoxygentogrow Discussion Lookatthepicturesofaplantexperiment Thepicturesareinthecorrectorder Discusswithpartnersabouttheprocessestheplantsgothrough Reporteachpictureonebyone Plantthreebeansinapot waterthemandleavetheminawarm lightspot Twosmallshootsappear Cuttheendsoffaplasticbottle Wrapthebottleindarkpaper Laythebottleonitssideinthepotandputsomewetpapertowelinside Putoneoftheseedsinthecentreofthebottle Theseedhavetwolongshoots oneheadingtowardsthesoilandtheothergrowinguptowardthelight Sample Iplantedthreebeansinapot wateredthemandlefttheminawarmlightspot Inaweekeachseedhadtwosmallshoots Icuttheendsofaplasticbottleandwrappeditinda