本章教学主要采用课堂讲授、多媒体教学、分组讨论、课堂讨论等。 Chapter 6 Demand And Elasticity (一)目的与要求 the goal here is to know 1.Understanding the concepts"utility"and"marginal analysis" 2.Understanding how to analyze purchase decisions:Understanding how to analyze purchase decisions (二)教学内容 1.主要内容 Elasticity:The Measure of Responsiveness Price Elasticity of Demand:Its Effect on Total Revenue and Total Expenditure What Determines Demand Elasticity Elasticity AsA Central Concept The Time Period Of The Demand Curve And Economic Decision Making Real World Application:Polaroid Versus Kodak 2.基本概念和知识点 (Price)Elasticity of Demand;Elastic Demand;Inelastic Demand;Unit-Elastic Demand;Income Elasticity of Demand Complements,Substitutes,Cross elasticity of demand(for product x to a change in the price of another product y);Optimal Decision 3.问题与应用（能力要求） An excise tax may be imposed on a commodity in order to raise revenue for the govemment,or in order to reduce the consumption of the good a)Why are these goals in conflict with each other? b)What is the relevance of the price elasticity of demand in determining which of the goals is likely to be most fully met? c)Why do you think excise taxes on gasoline,tobacco,and alcohol are common? Is it more usual to find relationships of complementarity or substitutability between goods?Why? Will advertisers try to raise or lower the price elasticity of demand for the good they are advertising?Why? (三)思考与实我 Explain why,when the price of a good changes,the price elasticity of demand is likely to be higher or lower as a longer period of time elapses.Consider as an example the OPEC oil price increases in the 1970s 8 本章教学主要采用课堂讲授、多媒体教学、分组讨论、课堂讨论等。 Chapter 6 Demand And Elasticity （一）目的与要求 the goal here is to know 1.Understanding the concepts “utility” and “marginal analysis”; 2.Understanding how to analyze purchase decisions; Understanding how to analyze purchase decisions (二）教学内容 1.主要内容 Elasticity: The Measure of Responsiveness Price Elasticity of Demand: Its Effect on Total Revenue and Total Expenditure What Determines Demand Elasticity Elasticity As A Central Concept The Time Period Of The Demand Curve And Economic Decision Making Real World Application: Polaroid Versus Kodak 2.基本概念和知识点 (Price) Elasticity of Demand; Elastic Demand;Inelastic Demand; Unit-Elastic Demand; Income Elasticity of Demand Complements; Substitutes; Cross elasticity of demand (for product x to a change in the price of another product y); Optimal Decision 3.问题与应用（能力要求） An excise tax may be imposed on a commodity in order to raise revenue for the government, or in order to reduce the consumption of the good. a) Why are these goals in conflict with each other? b) What is the relevance of the price elasticity of demand in determining which of the goals is likely to be most fully met? c) Why do you think excise taxes on gasoline, tobacco, and alcohol are common? Is it more usual to find relationships of complementarity or substitutability between goods? Why? Will advertisers try to raise or lower the price elasticity of demand for the good they are advertising? Why? （三）思考与实践 Explain why, when the price of a good changes, the price elasticity of demand is likely to be higher or lower as a longer period of time elapses. Consider as an example the OPEC oil price increases in the 1970s