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1、Unit6TheWaterCycleSecondperiodMulti-mediaclassroomTeachingaid:ataperecorder,aglassofwater,PPTTeachingobjectives:1.Ssunderstandthewatercycleandsomefeaturesaboutthewater2.Learntheusefulwordsandexpressionsinthetext3.SsenjoyusingtheirownwordstoexplainthewatercyclethroughplayT
2、eachingprocedureStep1Lead-inTeachershowsaglassofwaterandasksSs:What’sthis?Ss:It’saglassofwaterT:Igetitfromawatertap.ThenwherecanIfindwaterinthenature?Ss:inlakes,seas,mountains,intheplants…T:Good!Ilistsomeoftheplaceslet’ssee(slide1)Nowreadthemtogetherafterme.T:Wecanseether
3、eislotsofwaterontheearth,doyouknowwhatwecalltheearthbecauseofit.Ss:aworldofwater.Step2ListeningandReading1.ListentoPara.1andanswerthequestionsT:right.(slide2)Thenhowmuchwateralltogether,doyouthink?Ss…T:Nowlet’slistentothetapetofindtherightanswer.YoumayopenyourbookonP64.Lo
4、okatPara1.(Afterlistening)Ss:about330millioncubicmilesT:Thenwhataboutthe3questions,canyoufindtheanswersquickly?(slide3)(1)Wherecanwefindmostofthewater,howmuch?Intheocean,230millioncubicmiles(2)3differenttypesofwaterthatexistsintheworld?Watervapor,ice,water2.Playavideo.(sl
5、ide4)T:Let’sfindmoreaboutthewater,lookatthevideo:Didyouknowthatthewaterwedrinktodaymaybedrunkbythousandsofyearolddinosaur?T:Howtounderstandthesentence?Doesthedinosaurstillalivetoday?Ss:Ofcoursenot.T:Sothewaterisveryold,youknow,theoceanscanbethousandsofyears.Butyoumayaskwh
6、y?Becausewedrinkfreshwaterintheriver,notthesaltwaterintheocean,Howcanwedrinkthewaterintheocean?It’sbecauseofthewatercycle.(slide5)3.Listentothetapeoftherestofthetest(slide6)T:Let’sfindwhatthewatercycleis.?Andwhatthingsareassociatedtothewatercycle?Ss:Thewatercycleisthemove
7、mentofwaterfromtheoceanstothelandandfromthelandtotheoceans.Ss:Thesun,theocean,thevapor,waterdrop,theland,theclouds,thewind,therain,thesnow,thegroundwater,theplants,theanimalsandpeople,theriversandlakes.T:Welldone.4.TeacherandSslearnthewatercycletogetherfromonesteptotheoth
8、er.Ssmayfindtheanswersinthetextbook.T:Let’stravelinthewatercycletogether.Firstlet’sthink,iftoday
