人教選擇性必修第二冊Unit1UsingLanguage(I)Talkaboutscientificexperiences教學目

Lead-in視頻：ScientificPhenomena12目標一：Togetthecluesandkeyinformationofthelisteningconversationwiththehelpofpredictingbyusingpictures.Activity1:Lookthroughpage6andpage7.Findoutthenewwords,andreadtheminpairs.Thenreadtogetherasawholeandsharetheirusage.cast,shadow,rainbow,pour,concreteActivity2:Lookatthephotosbelow,anddiscussingroupswhattheseactivitieshavetodowithscience.AIthinkthedishinthisexhibitionisrelatedtosound.Maybetheboyiswhisperingintothesmallercircleandthedishcanmakehisvoicelouder.BThislookslikeapianoyouplaywithyourfeet.Maybeitshowshowsoundworks.CI'mnotsurewhatthisoneshows,butitmustbeaboutlightoreyesight.DItisahallofmirrors.Maybeithastodowiththeprinciplesofreflection.Activity3:Thephotosabovearerelatedtotheconversationyouwillhear.Usingthephotos,trytopredicttheanswerstothefollowingquestions.1Wherearethepeopleintheconversationgoingtogo?2Whatkindofplaceisit,andwhatdoesitfocuson?3Whatkindsofthingscanyoudothere?PredictbyusingpicturesOnewaytogetmoreoutofyourlisteningistopredictwhatyouwillhear.Usingthepicturesprovidedandtheknowledgeyoualreadyhave,youcanguessthekindsofinformationyoushouldlistenfor.Attimes,youmayevenbeabletoguessexactlywhatwillbetalkedabout.Thiswillhelpyoufocusbetterwhenlistening,makingyourlisteningmoreeffective.SuggestedAnswers:1Theyaregoingtoasciencemuseum.2Itisasciencemuseumthatfocusesonlettingvisitorsexperiencesciencethroughinteractivelearningexhibitions.3Youcanprobablytrydifferentactivitiestolearnaboutsound,light,reflection,andsoon.Forexample,youcangotoaroomwithmanymirrorsfacingeachothersoitlooks

liketherearemanycopiesofyou!Oryoucanplaywithabigpianoonthefloor.Activity4:Task1ListentotheconversationandseeifyouranswersforActivity2arecorrect.Thenwritedowntheletters(A-E)forthephotosintheorderthatyouhearthemdescribed.DCEBAPhotoA:Agiantdish;whenyouspeakintoit,it_______thesoundbackand_____________.Youcanuseittospeakina_______tosomeone17metresaway,PhotoB:Agiant____________thatyoucanuseyourfeettoplay.Insteadofplayingthesoundsofapiano,itplaysthevoicesof_____________.PhotoC:Youlookatabluescreenforawhile,andthensuddenlyyoucansee

______________movingaroundonit.Theseareour____________.PhotoD:A____________whereyoucanseeyourselfreflectedthousandsoftimes.PhotoE:Youstandinfrontof____________anditcastsdifferentshadowsofyou,in____________therainbow.reflectsmakesitlouderwhisperpianokeyboardclassicalsingerstinybrightlightsownbloodcellshallofmirrorsawhitelighteverycolourofWhatscientificphenomenondoesPictureA/B/C/D/Eshow?Didyouguesscorrectly?Howdidyoumaketheguess?/Whydidn'tyouguesscorrectly?Asound/lightphenomenon.Activity1:Discussthefollowingquestionsingroups.1TheconversationisabouttheCityofScienceandIndustry,amuseuminParis.Wouldyouliketogotothismuseum?Whyorwhynot?2ArethereanymuseumslikethisinChina?Whatotherinterestingmuseumsarethere?SuggestedAnswers:1Yes.Theexhibitionsseemreallyinteresting.IthinkIwouldlearnalotthere.2Yes.Forexample,thereistheChinaScienceandTechnologyMuseuminBeijingandtheShanghaiScienceandTechnologyMuseum.Activity2:Ingroups,chooseoneofthemuseumactivitiesonthepreviouspageorbrainstormanotherscientificresearchorexperimentthatyouareinterestedin.Usethephrasesbelowtohelpyou.Ascientificphenomenon/experimentNameMaterialsneededTheorybehinditProcessSignificance...Activity3:Makeashortpresentationtotheclassaboutyourchoice.Usetheexamplebelowtohelpyou.SamplePresentation:Today,Iwanttotalktoyouaboutthepositiveandnegativechargesofmolecules.Wecandemonstratehowtheseinteractthroughasimpleexperimentusingmilk,dishsoap,andfoodcolouring.First,coverthebottomofashallowplatewithmilk.Nowaddtwoorthreedropsofdifferentliquidfoodcolouringtothecentreofthemilk.Theyshouldformonelargedarkpuddleinthemiddleofthemilk.Now,dipacottonswabintodishsoap,andplaceitintothemiddleofthefoodcolouring.Youwillseethecoloursquicklymovetoescapefromthesoap,makinginterestingandbeautifulpatterns.Thishappensbecausethedishsoapmoleculeshaveastrongnegativecharge,andthemilkmoleculeshaveastrongpositivecharge.Likemagnets,thesemoleculesareattractedtoeachother,andsotheyappeartomovearoundontheplate,takingthefoodcolourin