Principles of Economics
22 units · 220 lessons · Beginner · Free
A comprehensive introduction to micro and macro fundamentals — 22 units, 220 lessons.
What the course covers
Unit 1 Ten Principles of Economics
How people make decisions, how they interact, and how the economy works as a whole.
- People Face Tradeoffs
- The Cost of Something Is What You Give Up to Get It
- Rational People Think at the Margin
- People Respond to Incentives
- Trade Can Make Everyone Better Off
- Markets Are Usually a Good Way to Organize Economic Activity
- Governments Can Sometimes Improve Market Outcomes
- A Country’s Standard of Living Depends on Its Productivity
- Prices Rise When the Government Prints Too Much Money
- Society Faces a Short-Run Tradeoff Between Inflation and Unemployment
Unit 2 Thinking Like an Economist
Models, the scientific method, the circular flow, and the production possibilities frontier.
- The Economist as Scientist
- The Role of Models
- The Circular-Flow Diagram
- The Production Possibilities Frontier
- Microeconomics vs. Macroeconomics
- Positive vs. Normative Analysis
- Why Economists Disagree
- Causation and Correlation
- Models, Math, and Reality
- Economists in Policy
Key termsUnit 3 Interdependence and the Gains from Trade
Absolute and comparative advantage, specialization, and the benefits of voluntary exchange.
- Why People (and Nations) Trade
- Production Possibilities Revisited
- Absolute Advantage
- Comparative Advantage
- Trade Terms and the Range of Mutual Gain
- Specialization and Total Output
- International Application
- Critiques and Limits of Comparative Advantage
- Outsourcing and Offshoring
- Policy: Free Trade vs. Protectionism
Unit 4 The Market Forces of Supply and Demand
How buyers and sellers interact in markets to determine prices and quantities.
- Markets and Competition
- Demand
- Shifts in Demand
- Supply
- Shifts in Supply
- Market Equilibrium
- Three Steps to Analyze a Change
- Two Markets, Joint Adjustment
- Limits of Supply and Demand
- Case Study: Markets in Action
Unit 5 Elasticity and Its Application
How responsive are quantity demanded and supplied to price, income, and other variables?
- Elasticity: The Concept
- Price Elasticity of Demand
- Determinants of Price Elasticity of Demand
- Total Revenue and Elasticity
- Elasticity Along a Linear Demand Curve
- Other Elasticities
- Price Elasticity of Supply
- Applications: Why Farmers Suffer Bumper Crops
- Applications: Drug Interdiction
- Applications: OPEC and Oil
Unit 6 Supply, Demand, and Government Policies
Price ceilings, price floors, taxes — and the law of unintended consequences.
- Price Controls Overview
- Price Ceilings: Rent Control
- Price Floors: Minimum Wage
- Taxes: Basics
- Tax Incidence: Who Really Pays?
- Deadweight Loss of Taxation
- Tax Revenue and the Laffer Curve
- Subsidies as Negative Taxes
- Quotas and Other Quantity Controls
- Case Studies: Policies in Practice
Unit 7 Consumers, Producers, and the Efficiency of Markets
Welfare economics: consumer surplus, producer surplus, and why markets often allocate resources well.
- Welfare Economics
- Willingness to Pay
- Cost and Producer Surplus
- Market Efficiency
- Market Failures Overview
- Property Rights and Market Function
- Limits of Surplus Analysis
- Pareto Efficiency and Beyond
- Second Welfare Theorem and Redistribution
- Conclusion: Markets, Their Power and Limits
Unit 8 Application: The Costs of Taxation
Deadweight loss, tax revenue, and the design of efficient tax systems.
- Tax Effects on Market Participants
- Deadweight Loss
- Determinants of Deadweight Loss
- Tax Revenue
- Elasticities and DWL
- Real-World Applications
- Lump-Sum and Optimal Taxes
- Tax Reform Principles
- Taxation in Open Economies
- Behavioral and Distributional Considerations
Unit 9 Application: International Trade
Who wins, who loses, and the case for free trade — with caveats.
- Comparative Advantage Revisited
- Winners and Losers from Trade
- Tariffs
- Import Quotas
- Arguments For Trade Restrictions
- Trade Agreements and the WTO
- Currency and the Balance of Trade
- Trade Adjustment and Inequality
- Trade and the Environment
- Globalization: Status and Future
Unit 10 Externalities
When private costs and benefits diverge from social ones, and how to fix it.
- Externalities Defined
- Negative Externalities
- Positive Externalities
- Pigouvian Taxes and Subsidies
- Coase Theorem
- Tradable Permits / Cap-and-Trade
- Public Policy on Externalities
- Climate Change Economics
- Examples of Externalities in Practice
- Behavioral Externalities
Unit 11 Public Goods and Common Resources
Goods that markets struggle with — and what to do about them.
- Categorizing Goods
- The Free-Rider Problem
- Important Public Goods
- Cost-Benefit Analysis
- Common Resources
- Atmospheric Commons: Climate
- Roads, Bridges, and Congestion
- Information as a Public Good
- Public Choice Theory
- Designing Public Provision
Unit 12 The Design of the Tax System
How governments raise revenue — and how to do it well.
- Government Finance Overview
- Federal Government Revenue
- State and Local Revenue
- Tax Efficiency
- Tax Equity
- Progressive, Proportional, Regressive
- Tax Incidence and Equity
- Tax Reform Proposals
- Tax Behavior and Compliance
- Future of Taxation
Unit 13 The Costs of Production
How firms turn inputs into outputs — and what it costs them.
- What are Costs?
- Production Function
- Total Cost Curve
- Average and Marginal Cost
- Short-Run vs. Long-Run Costs
- Economies of Scale
- Sunk Costs
- Cost Curves in Practice
- Costs and Strategic Behavior
- Conclusion: Costs and Firm Behavior
Unit 14 Firms in Competitive Markets
How price-taking firms decide output and how markets self-correct over time.
- Perfect Competition Defined
- Revenue for a Competitive Firm
- Profit Maximization
- The Shutdown Decision
- Firm's Supply Curve
- Entry, Exit, and Long-Run Equilibrium
- Short-Run Market Supply
- Welfare in Competitive Markets
- Real-World Competitive Markets
- Conclusion: The Power of Competition
Unit 15 Monopoly
A single seller can raise prices above marginal cost — and what to do about it.
- Sources of Monopoly
- Monopoly Demand and Revenue
- Monopoly Profit Maximization
- Monopoly's Welfare Cost
- Price Discrimination
- Public Policy Toward Monopolies
- Natural Monopoly Regulation
- Monopoly in Innovation
- Modern Monopoly Concerns
- Conclusion: Living with Monopoly
Unit 16 Monopolistic Competition and Oligopoly
Imperfect competition: differentiated products, few firms, strategic interaction.
- Imperfect Competition Overview
- Monopolistic Competition
- Product Differentiation
- Advertising
- Oligopoly
- Cooperation and Cartels
- Prisoner's Dilemma
- Repeated Games and Cooperation
- Antitrust in Oligopoly
- Real-World Oligopolies
Unit 17 The Markets for the Factors of Production
How labor, land, and capital are priced — and the link to income distribution.
- Factor Markets
- Demand for Labor
- Supply of Labor
- Labor Market Equilibrium
- Other Factors: Land and Capital
- Linkages Among Factors
- Monopsony and Labor Market Power
- Unions and Collective Bargaining
- Efficiency Wages
- Conclusion: Factor Markets and Income
Unit 18 Earnings, Discrimination, and Inequality
Why earnings differ, what role discrimination plays, and how inequality is measured.
- Why Earnings Vary
- Human Capital
- Ability, Effort, and Chance
- Education and Signaling
- Superstar Economics
- Discrimination
- Gender Wage Gap
- Measuring Inequality
- Poverty
- Policies to Reduce Poverty
Unit 19 The Theory of Consumer Choice
How consumers maximize utility subject to budget constraints — and what behavioral wrinkles complicate this.
- Budget Constraint
- Preferences and Indifference Curves
- Optimal Choice
- Income and Substitution Effects
- Applications of Consumer Choice
- Behavioral Economics: Bounded Rationality
- Prospect Theory
- Framing, Anchoring, Choice Architecture
- Time and Self-Control
- Conclusion: Modern Consumer Theory
Unit 20 Measuring a Nation's Income
Gross Domestic Product — the most important number in macroeconomics.
- GDP Defined
- Components of GDP
- Real vs. Nominal GDP
- GDP and Economic Well-Being
- Production, Expenditure, Income Approaches
- GDP Limitations Detailed
- International Comparisons
- GDP and Inequality
- Beyond GDP
- Conclusion: GDP as a Tool
Unit 21 Measuring the Cost of Living
Consumer Price Index, inflation, and adjusting for changes in purchasing power.
- The Consumer Price Index (CPI)
- Inflation Rate from CPI
- Problems with CPI
- GDP Deflator vs CPI
- Real vs Nominal Variables
- Indexation
- Real vs Nominal Interest Rates
- Inflation Expectations
- Costs of Inflation
- Hyperinflation Cases
Unit 22 Production, Growth, Money, and Macroeconomic Policy
Long-run growth, the monetary system, and macroeconomic stabilization.
- Economic Growth and Living Standards
- Determinants of Productivity
- Saving, Investment, and Growth
- The Monetary System
- Banks and Money Creation
- Central Bank Tools
- Quantity Theory and Inflation
- Business Cycles
- Aggregate Demand and Supply
- Monetary and Fiscal Policy