3、ealizethepowerofsharing.3.KeyPointsandDifficultPoints:a.HelpstudentstosummarizetheirownmethodsofdoingFiveFromSeven.b.Stimulatetheinterestsofstudents.PartIITheanalysisofstudentsAsthestudentsaregradeone, they havenoideaofthistypeofexercise.Thisisreallyachallengeforthem.Idesignsomeexe