Economics

What this covers

• Distinguishing a shift of supply or demand from a movement along the curve, and tracing the new equilibrium price and quantity
• Calculating price elasticity of demand, income elasticity and cross-price elasticity, and linking elasticity to total revenue
• Applying marginal analysis: MR = MC output decisions, shutdown versus break-even points, and comparing perfect competition, monopoly, oligopoly and monopolistic competition
• Reading and constructing AD-AS diagrams, including short-run versus long-run adjustment after a demand or supply shock
• Computing and interpreting real GDP, CPI and inflation rates, unemployment rate and labour force participation, including nominal-to-real conversions
• Tracing fiscal policy (spending, taxes, multipliers) and monetary policy (open market operations, reserve and interest rate tools) through to output, price level and interest rates
• Using production possibilities curves and comparative advantage to identify opportunity cost and the gains from trade

Where learners get stuck

Treating a price change as something that shifts the demand curve

Everyday language says 'higher prices reduce demand', which sounds like a shift. Students need the discipline of asking which variable is on an axis: anything on the axes causes movement along the curve, everything else shifts it.

Confusing comparative advantage with absolute advantage

Output tables make it tempting to pick whoever produces more. Comparative advantage requires converting to opportunity cost per unit, and students often skip that division step or invert the ratio.

Mixing up nominal and real values, especially with interest rates and GDP

Both are quoted in dollars or percentages, so the inflation adjustment feels optional. It shows up as wrong answers on real interest rate questions and on 'did the economy actually grow' comparisons across years.

Assuming a monopoly charges the highest price it can

Students remember 'price maker' but forget the firm still faces a downward-sloping demand curve. The profit-maximising quantity comes from MR = MC first, with price read up to the demand curve second.

What a session looks like

A typical session starts with a short diagnostic question spoken aloud, then moves to one or two problems you work through in conversation. For graph questions you narrate the setup step by step, and Evelyn probes at the point where the logic breaks rather than supplying the answer. Numerical work such as elasticity, multipliers or CPI calculations is done in stages so the arithmetic and the interpretation stay separate. Sessions usually end with you explaining one concept back in your own words, since free-response and essay marks depend on stating the mechanism, not just the direction of the change.

Helpful to know first

• Comfort with percentages, ratios and simple algebra (solving for equilibrium from two linear equations)
• Ability to read and plot points on a coordinate graph and interpret slope
• No prior economics coursework required; the vocabulary is built up from scarcity and opportunity cost onward

Questions

Does this cover both microeconomics and macroeconomics?

Yes. Sessions can focus on either half or move between them, and you can specify which unit your class is on, for example market structures, externalities, the money market, or the Phillips curve.

Can it help with free-response questions that require drawing graphs?

Yes, by rehearsing the verbal reasoning behind each graph: which curve moves, in which direction, why, and what happens to price level, output and interest rates. You draw on paper while describing your steps aloud.

My child's class uses a lot of current news examples. Can sessions do that?

Sessions can apply the standard models to examples you raise, such as a central bank rate change or a supply shock, and connect them back to the diagrams and terminology your course uses.

How is this different from the Government & Politics topic?

Economics sessions stay with models and quantitative analysis such as elasticity, marginal cost and AD-AS. Institutional questions about how policy is passed or which body has authority belong to the Government & Politics topic.