Unit3EnvironmentalprotectionReadingandThinking公开课课件高中英语人教版选择性

2019新人教高中英语选择性必修三

Unit3EnvironmentalProtection

ReadingandThinkingTeachingobjectives:Bytheendofthisperiod,youwillbeableto1.knowabout

theclimatechangeandsummarizethemainideaofeachparagraph;2.learnaboutthe“greenhouseeffect”andcreateadiagramdescribinghowitworks;3.analysetheconsequencesofclimatechangeandenhancetheawarenessofenvironmentalprotection;4.voicetheirpersonalopinionsabouthowtodealwithclimatechange.Wheredoyouthinkthisphotowastaken?Whatishappeninginthephoto?Whatdoesthisphotomakeyouthinkof?DiscussthefrontpageglobalwarmingCLIMATECHANGEREQUIRESTHEWORLD’SATTENTIONPrediction——Whatwillbetalkedaboutinthepassage?Whatisthegraphabout?Whatinformationcanyougetfromit?Guesswhatmighthappentothepolarbearinthephoto?Howdiditdie?skinandbonesstarvedtodeathAnenvironmentalmagazine2Paragraph1

AthereasonscausingtheincreaseintemperatureParagraph2

BIntroducethepresentsituationaboutclimatechange.Paragraph3

CArealcaseshowedthegreatimpacttheincreaseintemperaturehadonEarth’secologyParagraph4

DWhatshouldwehumandoaboutglobalwarming.Paragraph5

ETheseriousconsequencesofglobalwarming1.Matchthemainideawitheachparagraph.While-readingActivity1:ReadingforthemainideaandthestructureWhile-readingActivity1:Readingforthemainideaandthestructure2.FigureoutthestructurePara.1thepresentsituationpara.2

arealcasepara.5thesolutionspara.4theconsequencespara.3thereasonsActivity2:ReadingfordetailsLiMingevidence:_____________________________________Theglobalclimatehaschanged.TheEarthisgettingwarmerandwarmer.Awarmingoceanandatmospheremeltingiceandrisingsealevels1.WhathappenedtotheEarth?Activity2:ReadingfordetailsPara.1&2globalwarming1.Whathappened:________________________________2.How:__________________________________________________________________________________________________________________________________________3.Whydidthewriterwriteaboutthepolarbear?Thepolarbearinthephotodiedofstarvation.Lowsea-icelevelscausedbyclimatechangemadethebearcouldn’thuntsealsasbefore.Ithadtotravelgreaterdistancesinordertofindfood.Thewriterwroteaboutitbecauseitshowedoneoftheeffectsofrisingtemperaturesduetoclimatechange.Theseriousnessofglobalwarmingisbetterillustratedbyarealcase.Para.3——thereasonscausingtheincreaseintemperature

Itisthe“greenhouseeffect”,includingthe“natural”andthe“man-made”greenhouseeffect.1.Whatcausedtheincreaseintheglobalaveragesurfacetemperature?2.Createadiagramtodescribehowthegreenhouseeffectworks.Activity3:Readparagraph3carefullyandcreateadiagramdescribinghowthegreenhouseeffectworks.Drawadiagram

Diagramsareveryusefultoolsthatcanbeusedtobrainstormideas,mapoutprocesses,showcauseandeffectrelationships,explainanewideaorconcept,andsoon.Whenyoureadanessayaboutscientificissues,youcantrydrawingadiagram,whichwillnotonlyallowyoutovisualisetheproblemsmoreclearlybutalsocanhelpdemonstrateyourcreativethinkingandproblem-solving.Activity3:Createadiagramheatreleasedbackintospaceextragreenhousegasemissionsbyburningfossilfuels

effectsunlightatmosphere:includinggreenhousegases

effect“natural”greenhouseheatreflectedtoearth

“man-made”greenhousePara.4——theseriousconsequences

Activity4:Whataretheresultsoftheriseintemperature?extremeweathernaturaldisastersdamagehuman

livesHumanwillpay____________

1243theriseintemperature________________and_______________worldwiseserious__________cost____________ahigherprice

economiclossdeathPara.5——Whatweshoulddo?

Governments:1.___________________2.____________________________________________________________

*Individuals:

1.____________________________________________________________________________________________________________

MakepoliciesTakeappropriateactionsandmeasurestoreducegreenhousegasemissions.Reduceour“carbonfootprint”byrestrictingtheamountofcarbondioxideourlifestylesproduce.Seizeeveryopportunitytoeducateeveryoneaboutglobalwarming.Activity5Criticalthinking——responsibilityandmeasures2.“Weindividualscanalsoreduceour‘carbonfootprint’byrestrictingtheamountofcarbondioxideourlifestylesproduce”.Whatcanwedotolivealow-carbonlifestyle?Creativethinking——responsibilityandmeasuresTakethestairsinsteadofelevatorWhatyoushoulddotodototackleit?Don'tlitterWhatyoushoulddotodototackleit?Gotoschoolbybikeinsteadofbycar/busWhatyoushoulddotodototackleit?TurnoffthelightswhenleavingCoverthepotwhilecookingWhatyoushoulddotodototackleit?UsehandkerchiefinsteadoffacialtissueWhatyoushoulddotodototackleit?Usebasketorenvironmentalbasketbaginsteadofplasticbag;buythinseconomicwithenergy;userecyclegoodsoritems.Whatyoushoulddotodototackleit?watchlessTVWhatyoushoulddotodototackleit?plantmoretreesWhatyoushoulddotodototackleit?eatmorevegetableWhatyoushoulddotodototackleit?Lesstissue,regainhandkerchiefforestprotectionTurnofflig