Summer Bridging and Transition Course for Year 13 WJEC Economics | Year 13 WJEC 经济：暑期预习与衔接课程

📚 Summer Bridging and Transition Course for Year 13 WJEC Economics | Year 13 WJEC 经济：暑期预习与衔接课程

As you progress from Year 12 to Year 13 in WJEC Economics, the depth and complexity of both microeconomic and macroeconomic analysis increase significantly. The summer break offers a valuable opportunity to consolidate your AS knowledge, preview new A2 topics, and develop the higher-order evaluation skills required for top marks. This bridging guide outlines a structured approach to help you transition smoothly and confidently into the final year of your A level course.

随着从WJEC经济学的Year 12进入Year 13，微观与宏观经济分析的深度和复杂性显著提高。暑期是巩固AS知识、预览A2新主题，并培养获取高分所需的高阶评估能力的宝贵时机。这份衔接指南提供了一套结构化的方法，帮助你顺利、自信地过渡到A level课程的最后一学年。

1. Reviewing Supply, Demand, and Elasticity | 回顾供给、需求与弹性

Before tackling the more advanced microeconomic models, it is essential to revisit the core concepts of demand, supply and market equilibrium from Year 12. Make sure you can clearly explain the laws of demand and supply, distinguish between movements along and shifts of the curves, and analyse how equilibrium price and quantity adjust to changes in market conditions. Equally important is a solid command of price elasticity of demand (PED), price elasticity of supply (PES), income elasticity of demand (YED) and cross elasticity of demand (XED). Practice calculating these elasticities using percentage changes and interpreting the numerical values to describe the responsiveness of consumers and producers.

在学习更复杂的微观经济模型之前，回顾Year 12的需求、供给和市场均衡等核心概念至关重要。请确保你能清晰解释需求定律和供给定律，区分沿着曲线的移动与曲线本身的移动，并分析均衡价格和数量如何随市场条件变化而调整。同样重要的是，要牢固掌握需求价格弹性（PED）、供给价格弹性（PES）、需求收入弹性（YED）和需求交叉弹性（XED）。练习使用百分比变化计算这些弹性，并解读数值以描述消费者和生产者的反应程度。

In Year 13, elasticity becomes a powerful tool for analysing real-world scenarios such as the incidence of taxation on workers versus firms in labour markets, pricing strategies of firms with market power, and the impact of a recession on inferior versus normal goods. Understanding how elasticities determine the distribution of tax burdens and the effectiveness of government interventions will give you a head start in constructing rigorous economic arguments.

在Year 13中，弹性将成为分析现实世界情景的有力工具，例如劳动力市场中税收负担在工人与企业之间的分担、拥有市场势力的企业的定价策略，以及经济衰退对低档品与正常品的影响。理解弹性如何决定税收负担的分配以及政府干预的有效性，将使你在构建严谨的经济论据时抢占先机。

2. Market Failure and Government Intervention | 市场失灵与政府干预复习

A firm grasp of market failure—including externalities, public goods, information gaps and monopoly power—is crucial because Year 13 extends these concepts into new areas such as labour market failure, inequality, and environmental policy. Revise why free markets can over-produce negative externalities and under-produce positive externalities, and evaluate the relative merits of taxes, subsidies, regulation, tradable permits and state provision.

牢固掌握市场失灵——包括外部性、公共品、信息不对称和垄断势力——至关重要，因为Year 13将这些概念延伸至劳动力市场失灵、不平等和环境政策等新领域。复习自由市场为何会过度生产负外部性而生产不足正外部性，并评估税收、补贴、规制、可交易许可证和国家供给等干预措施的相对优劣。

Year 13 requires a deeper evaluation of government failure, contrasting it with market failure to judge whether intervention improves allocative efficiency. The summer is the ideal time to practice constructing balanced, evidence-based arguments that weigh up the unintended consequences of policies such as minimum pricing and agricultural support schemes.

Year 13要求对政府失灵的评估更为深入，将其与市场失灵进行对比，以判断干预是否能改善配置效率。暑假正是练习构建平衡、基于证据的论点的理想时机，权衡最低定价和农业补贴等政策可能带来的意外后果。

3. Macroeconomic Fundamentals: AD/AS Model | 宏观经济基础：总需求与总供给模型

The aggregate demand and aggregate supply model is the engine of macroeconomic analysis in A2. Review the components of AD (C+I+G+(X-M)), the distinction between short-run AS and long-run AS, and the determinants that shift each curve. Practise drawing diagrams that illustrate output gaps, demand-pull and cost-push inflation, and the effects of fiscal and monetary policy.

总需求与总供给模型是A2宏观经济分析的引擎。复习AD的组成部分（C+I+G+(X-M)），短期AS与长期AS的区别，以及导致各条曲线移动的决定因素。练习绘制显示产出缺口、需求拉动型和成本推动型通货膨胀，以及财政与货币政策效果的图示。

In Year 13 you will explore the Keynesian and classical views of the long-run aggregate supply curve in greater depth, including debates about the self-correcting mechanism and the role of government in managing the economic cycle. A clear understanding of how the AD/AS framework links to unemployment, inflation and economic growth will make the transition to advanced policy evaluation much smoother.

在Year 13中，你将更深入地探讨长期总供给曲线的凯恩斯主义与古典主义观点，包括关于自我纠正机制及政府在经济周期管理中作用的争论。清晰理解AD/AS框架如何与失业、通货膨胀和经济增长联系起来，将使向高级政策评估的过渡更为顺畅。

4. Exploring Labour Markets | 劳动力市场探索

The labour market is a major new topic at Year 13. Start by viewing labour as a derived demand and understand how firms’ demand for workers depends on the marginal revenue product (MRP). Analyse wage determination in perfectly competitive labour markets and in situations where employers or trade unions have market power, such as monopsony and bilateral monopoly. Pay special attention to the impact of the minimum wage, discrimination and geographical/occupational immobility on wage differentials.

劳动力市场是Year 13的一个主要新课题。首先要将劳动视为派生需求，理解企业对工人的需求如何取决于边际收益产品（MRP）。分析完全竞争劳动力市场中的工资决定，以及在雇主或工会拥有市场势力（如买方垄断和双边垄断）情况下的工资决定。特别关注最低工资、歧视以及地理/职业流动性障碍对工资差异的影响。

Make sure you are comfortable with drawing labour market diagrams, including the interaction of MRP and marginal factor cost curves, and can evaluate the employment and wage effects of different policy interventions. Linking labour market analysis back to productivity, education and the distribution of income will serve you well throughout Unit 3.

请确保你能熟练绘制劳动力市场图表，包括MRP与边际要素成本曲线的相互作用，并能评估不同政策干预的就业与工资效果。将劳动力市场分析与生产率、教育和收入分配相联系，将会在Unit 3的整个学习过程中为你们提供很大帮助。

5. Theory of the Firm and Market Structures | 企业理论与市场结构

The theory of the firm is a core component of Unit 3. Use the summer to become familiar with the various cost and revenue curves: total, average and marginal costs and revenues, and the relationships between them. Understand the law of diminishing returns in the short run and the concept of economies and diseconomies of scale in the long run. Once you are confident with these building blocks, introduce the profit-maximising rule (MC=MR) and apply it to perfect competition, monopolistic competition, oligopoly and monopoly.

企业理论是Unit 3的核心组成部分。利用暑期熟悉各种成本和收益曲线：总计、平均和边际成本与收益，以及它们之间的关系。理解短期中的收益递减规律和长期中的规模经济与规模不经济的概念。在掌握这些基础之后，再引入利润最大化规则（MC=MR），并将其应用于完全竞争、垄断竞争、寡头和垄断市场。

Year 13 demands that you can compare the long-run equilibrium outcomes in terms of efficiency, prices and consumer welfare, using diagrammatic analysis. Also begin exploring models of oligopolistic behaviour such as the kinked demand curve, game theory and price leadership, which often feature prominently in exam essays. Practise linking these theoretical models to real-world industries and competition policy.

Year 13要求你能够运用图表分析，比较不同市场结构在长期均衡中的效率、价格和消费者福利结果。同时，开始探索寡头行为的模型，如折弯的需求曲线、博弈论和价格领导，这些在考试论文中经常出现。练习将这些理论模型与现实世界中的产业及竞争政策联系起来。

6. Income Inequality and Poverty | 收入不平等与贫困

Unit 3 also covers the causes and consequences of income and wealth inequality, as well as poverty. Review how inequality is measured using the Lorenz curve and Gini coefficient, and distinguish between absolute and relative poverty. Consider the impact of factors such as globalisation, technological change, tax and benefit systems, and education on the distribution of income.

Unit 3还涉及收入和财富不平等以及贫困的原因与后果。复习如何使用洛伦兹曲线和基尼系数衡量不平等，并区分绝对贫困与相对贫困。思考全球化、技术变革、税收与福利制度以及教育等因素对收入分配的影响。

Published by TutorHao | Year 13 Economics Revision Series | aleveler.com

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