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1、Unit4TheWorldofNumbersⅠ.Period:The1stperiodⅡ.Teachingcontent:ReadingAinPage50Ⅲ.Teachingtype:readingⅣ.Teachingaim:ØLanguage:Acquiresomeknowledgeabouttheancientnumbers,thesystemofnumbersandcalculatingmachines.Learnsomeexpressionsofcalculation,e.g.oddnumber,evennumber,add,pl
2、us,subtract,minus,multiply,times,divide,equals,apercentage.ØAbility:DosomesimplecalculationsØEmotion:Bewarestudentsoftheconcept:allsubjectsarecloselyrelated.Weshouldnotfavouroneorsomesubjectsandneglectanotherorothers.Ifyoustudyonesubjectwell,itwillbehelpfulforyoutostudyot
3、hersubjects.Ⅴ.Teachingtool:multi-mediaⅥ.DifficultandimportantpointsⅦ.Teachingprocedure:1.Greetings(1min)2.Lead-in(Raisesomequestions)(5mins)T:DoyouknowwhatsubjectIwillteachtoday?English?Chinese?Ormath?S(predicted):Englsh.T:Areyousure?Iamafriadnot.I’dliketoteachyoumathtoda
4、y.Areyougoodatmath?Let’sdosomequizzestoseehowwellyourmathis.Q1:Howmanyboysarethereinourclass?S(predicted):Thirteen.(Theteacherwritesdownthenumberontheblackboard)Q2:Howmanygirlsarethereinourclass?S(predicted):Twelve.(Theteacherwritesdownthenumberontheblackboard)Q3:Howmanys
5、tudentsarethereinourclass?S(predicted):Twenty-five.(Theteacherwritesdownthenumberontheblackboard)Q4:Howdoyouknow?Suggestedanswer:Addthirteenandtwelve.Wegetfifteen.Thirteenplustwelveequalsfifteen.Soourclassconsistsofthirteenboysandtwelvegirls.Q5:Wehavefourclassesinourgrade
6、.Ifeveryclasshastwenty-fivestudents,howmanystudentsarethereinourgrade?Suggestedanswer:Onehundred.Q6:Doyouknowwhoinventedthesenumbers?TheArabiansortheIndians?Suggestedanswer:TheIndians.Q7:Whatmachinescanweusetocalculatenumbers?Suggestedanswers:abacus,electroniccalculator,c
7、omputer3.Learnsomenewwordsandexpressions.(interwovenwiththeaboveprocess)(10mins)(1)“add…and…”,“…plus…equals…”,“consistof”:Addthirteenandtwelve.Wegetfifteen.Thirteenplustwelveequalsfifteen.Soourclassconsistsofthirteenboysandtwelvegirls.(2)“odd”,“even”:Thirteenisanoddnumber
8、.Twelveisanevennumber.(3)“multiply…by…”.“…times…equals…”,“nearly”:Multiplytwenty-fivebyfour.Wege