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1、外研版必修一Module5ALessoninaLab完整教案Period1Teachingaims:1.Tointroducesomegeneralscience.2.Tolearnsomewordsrelatedtothethemeofthismodule.3.Todevelopspeakingabilitybypracticingsayingthenumbers,especiallythefractions. Importantanddifficultpoints:1.Arousethestudents’interestsandloveinscience.2.Enablethe
2、studentstounderstandsomeelementsaboutthechemistrylab.3.Makethestudentsknowhowtoreadthenumbers.Teachingprocedures:Step1.IntroductionActivity1Theaimoftheactivityistoaskthestudentstofinishthequizaboutgeneralsciencetoarousetheirinterestinscience.Theactivitycanbedoneasfollows:Firstly,askthestudents
3、togothroughthefollowingthequizandmaketheirchoiceontheirown.Quiz:Howmuchdoyouknowaboutgeneralscience?1.Waterexists__________.(a)asasolid,aliquidandagas(b)asasolidandaliquidonly2.Whenyouheatametal,itwill___________(a)expand(b)contract3.Steelismixtureof_____________.(a)ironandothersubstances.(b)i
4、ronandoxygen4._______________oftheearth’ssurfaceiswater.(a)Two-thirds(b)50%5.Thedistanceofthesunfromtheearthis______________kilometers.(a)25,500(b)150,500,5006.Theearthis4.6______________yearsold.(a)million(b)billion7.Theearthis______________themoon(a)twiceaslargeas(b)forty-ninetimeslargerthan
5、Thenputthestudentsinpairstocomparetheiranswersandcallbacktheanswersfromtheclass.Finallyaskthemtolistentothetapeabouttheabovequizandchecktheiranswers.Answers:1.a;2.a;3.a4.a;5.b;6.b;7.b.Activities2&3Theteachercanpreparesomecardsaboutdifferentthingsfortheclassatfirst.Beforeshowingthestudentstheca
6、rds,theteachercansaytothewholeclass:Thingscanbedividedintothreekinds,natural,man-made,andeithernaturalorman-made,nowI’llshowyousomecardsinmyhand,canyoutellmewhicharenatural,man-madeorboth?Afterthis,theteachercancontinuetosaytothewholetheclass:Canyougivesomeexamples?Thendividethewholeclassintot
7、wobiggroupstocompete.TheteachercanasktheSstospeakoutasmanyexamplesaspossibleandwritedownthewordsinthetableontheblackboardasfollows:NaturalEg:wood,------Man-madeEg:glass,------Eithernaturalorman-madeEg:water,------Finally,asktheSstoopent
