等差数列的通项公式（中英双语）试卷

a2，2(n–1)，let’shavealookattheexample1st，4，(n-1)th，3rd，…a1，nth，…，6，2n，FormulaforTheGeneralTermofanArithmeticSequence等差数列的通项公式I??????????????????Teachingaims（教学目的）:1Learningtheformulaforthegeneraltermofanarithmeticsequence2UsingtheformulatosolvetheproblemsII???????????????Importantpointsanddifficultpoints（重点和难点）:1Theformulaforthegeneraltermofarithmeticsequence2MasteingandlearningtousetheformulaIII????????????Teachingprocedure（教学过程）:ⅠRevision:Question:Wehavelearnedarithmeticsequencewhocangiveusanexample?Question:WhocantellusthedefinitionofanarithmeticsequenceⅡ，a3，2nd，Newknowledge:theformulaforthegeneraltermofanarithmeticsequence（等差数列的通项公式）T:Todaywearegoingtolearntheformulaforthegeneraltermofarithmeticsequence，…2，…，…，an，an-1，…?Thereforean=a1+(n-1，