學(xué)必求其心得，業(yè)必貴于專(zhuān)精學(xué)必求其心得，業(yè)必貴于專(zhuān)精學(xué)必求其心得，業(yè)必貴于專(zhuān)精教學(xué)設(shè)計(jì)ReadingTeachinggoals：Knowledgeaims：1．Getstudentstolearntheusefulwordsandexpressionsinthispart：astronomy，system，religion，theory，atom，billion,globe，violent，carbon，atmosphere，unlike，fundamental,harmful，acid，chain，multiply，oxygen，exist，thus，dioxide，puzzle，solarsystem，intime，layeggs,givebirthto，inone'sturn，carbondioxide，prevent…from2．Letstudentslearnaboutthedevelopmentoftheearthandlife。Skillaims：1．Improvestudents'readingcomprehensionability。2．Enablestudentstoknowabouthowtheearthcameintobeingandthedevelopmentoflife.Moralcultureaims：1．Trainstudents'interestinscienceandstimulatetheirloveforastronomy.2．Haveadeepunderstandingoftheimportanceofprotectingtheenvironment。Teachingimportantanddifficultpoints:1．Discussthedevelopmentoflife.2．Whatwillourfuturebelikeiftheearthbecomestoohottolive？Andwhatcanwedotopreventsuchserioussituationfromhappening?Teachingmethods＆strategies：1．Task。basedmethod＆skimmingandscanning.2．Asking。and-answeringactivitytocheckstudents'understandingofthetext。3．Observationstrategy＆co-operationstrategyfordiscussion.4．Strategiesoffindinginformationbyreading。5．Individual，pairorgroupworktofinisheachtask。Teachingaids：ArecorderMultimediaTeachingprocedures:tep1Lead。in（individualwork）T：Asweallknow，theearthhasbeenexistingforbillionsofyears。Did_human_beings_live_on_the_earth_when_the_earth_came_into_being？Ifnot，wheredohumanbeingscomefrom？Orwhowereourancestors?S1:Monkeys!S2:BeijingRenwholivedmanyyearsago.S3：Apes（類(lèi)人猿）．S4：Gorillas（大猩猩）．S5：Chimpanzees（黑猩猩）．T：Verygood.Theybelongtoprimate（靈長(zhǎng)目動(dòng)物）．Anotherquestion：Doyouknowwhatplaysthemostimportantpartinourbody？（Waterorfat?）T:Water。Thendoyouknowhowdidwatercomeintobeingontheearth？Ss:No。Step2Fastreading(task1）ReadParagraphs1。3。Afterreading,letstudentswatchthevideoof“BigBang”，andthenanswerthequestion“Howdidwatercomeintobeingontheearth？”（individualwork)Possibleanswer：Theexplosionoftheearthproducedwatervapour，whichturnedintowaterwhentheearthcooleddown.Readthefirstthreeparagraphsagainwiththequestionsonthescreen:1）Whatistheearth'satmospheremadeupof?2)Whywastheearthdifferentfromotherplanets?A．Itproducedalotofheat。B．Thewaterremained.C．Waterdisappeared.D．Itwastheoldestplanet。3）Whywaswaterveryimportantforthebeginningoflife？Whenstudentsmeetsomedifficulty，theteachercangivethemsomehints。Forexample：Whatistheearth'satmospheremadeupof？（Showstudentssomepicturesabouttheearth’satmosphere。)Dotheexercises.（groupwork)Checktheanswers。Possibleanswers：1)Carbon，nitrogen，watervapourandothergases。2)B3）Waterallowedtheearthtodissolveharmfulgasesandacidsintotheoceansandseas。Thatmadeitpossibleforlifetobegintodevelop。Step3Intensivereading（task2）T：Whenwatercameintobeingontheearth，lifebegan.Thendoyouknowhowthelifedeveloped?Readthewholetextandfinishthechart。（pairwork)DevelopmentofLifeAsktwostudentstowritetheiranswersontheblackboard。Possibleanswers：1．dust2．globe3．a(chǎn)tmosphere4．Water5．plants6．oxygen7．land8．a(chǎn)mphibians9．dinosaurs10．mammalsStep4Haveadiscussion(task3）Throughthewriter’sdescription,welearnedthedevelopmentoflife。It’salongandslowprocess.Andtheearthisthebestplaceforallthelivingthingstoliveon.Buthumanbeingsdidn'ttakegoodcareofit。Listentothelastparagraphtwicewithbooksclosed.Choosethebestanswers.（individualwork）1）Whatproblemiscausedbyhumanbeings？A．Theyexisteverywhereontheearth.B．Theycauseglobalwarming.C．Theyfindnewmethodsofgrowingcrops。D．Theyenjoyhuntingandfishing。2）Fromthelastparagraphwecaninferthattheauthorisalittle______。A．happyB．carelessC．worriedD．excitedPossibleanswers：1)B2)CNowwelearnthathumanbeingscauseglobalwarming。Thatisthegreenhouseeffect。Iftheearthmaybecometoohotforthelivesonit，whatwillourfuturebelike?Andwhatcanwedotoprotectourearth？Pleasehaveadiscussionaccordingtothequestions.（groupwork)Questions:1）Whatwillourfuturebelikeiftheearthbecomestoohottolive？2）Whatcanwedotoprotectourearth?Notes:Thegreenhouseeffectisthemaincauseofthemeltoficeberg，drought，floodsandinsectpest。Everyoneontheearthmusttakeactiontoprotectourearth。Forexample，wecanplantmanytrees。Wemustdoourbesttostoppollutingourenvironment。Manynewlawsshouldbepassedtoplacestrictcontroloverindustrialpollution.Educatepeopleinfightingpollution.Asksomegroupstopresenttheiropinions.Step5Self.assessmentWritedownyouropinionsaccordingtothequestionsinthecard。1）Canyougiveabriefintroductiontohowtheuniversedeveloped,howlifebeganontheearthandthedevelopmentoflifeinyourownwords？2)Whatstrategiesofreadinghaveyoulearnedintheclass?3）Areyouactiveintheclass？4)What