IGCSE-数学考试注意要点讲课教案.ppt

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1、GCSEMATHEMATICSHOWTOIMPROVEYOURGRADETHEEASYWAYEQUIPMENT:Moststudentsbringallthecorrectequipment(Pens,Pencils,Ruler,Anglemeasurer/protractor,Calculator)Howeverthereisalotofevidencewhichshowstheysimplydon’tuseit!DIAGRAMS:AlmostalldiagramsareNOTdrawntoscale.Manystude

2、ntsignorethisfact.Theysimplymeasureanglesandlineswithoutcalculatingthemandconsequentlygetnomarks.CALCULATORSMakesureyoucanreadadisplaythatisinStandardForm.Nocreditisgivenforwritinganansweras1.6306.MakesureyourcalculatorissetintheDEGmodeFAMILIARISEYOURSELFWITHYOURO

3、WNCALCULATORBRINGITTOSCHOOLEVERYDAYDON’TRELYONTHESCHOOLSCALCULATORWHICHMAYHAVEADIFFERENTLOGICSYSTEMTOYOURS.METHODS:WorkingoutMUSTbeshown.Therearealotofmethodmarksavailableanditisrecommendedthatallrelevantstagesofworkingareshown.Incorrectanswerandnoworkinggainsnoma

4、rksIfcorrectworkingisshownandacarelesserrorresultsinanincorrectansweryoucouldgain4outof5marksavailableMATHSSPECIFICERRORSPROBABILITYAverylargenumberofanswersarestillgivenas1in2or5outof1O.Theseareincorrect.Answersshouldbedecimals,fractionsorpercentages.Asageneralru

5、leifthequestionusesfractionsthengiveyouranswerasafraction.Reminder:Aprobabilityanswercannotbegreaterthan1!UNITSYouwillhavetogiveyourownunitsforatleastonequestion.Unitsoflength,volumeandareaarefrequentlymixedupbystudents.Learnthem.LearncommonMetrictoImperialconvers

6、ions.eg1kg=2.2lbs,1mile=1.6Km.1Gallon=4.55Litresetc.Reminder:Thereare52weeksinayear.(Manystudentsuse50)UNITSEvenifnotaskedtoalwayswritedownunitsattheendofaquestionIfaquestioncontainsmmandcmitIsagoodideatoconvertalltothesameACCURACYDonotroundanswersoffuntiltheveryl

7、astlineofworking.Usethecalculatormemoryfunctionandnotationsuchas16.534…..Thisisespeciallyimportantintrigonometryquestions.(Thereisasignificantdifferencebetween23x1.66and23x1.66666666)Ifyouareaskedtomeasurealineanditmeasures9.1cmuse9.1cm.Donotassumethatthelineissup

8、posedtobe9cmlong.TRIALANDIMPROVEMENTUsuallytherewillbeatableforyoutowriteyourattemptsin.Youdonotneedtofillinalltherows.Youmusthaveatleastonetrialabovean