How to Get an A in Microeconomics and Macroeconomics: The Graphs-First Approach

I tutor intro econ at a state university. The pattern is the same every semester: students who draw the graphs from week 1 finish with A's. Students who try to memorize verbal definitions of 'price elasticity' without sketching demand curves finish with C's. The course is graphical, period.

Microeconomics — the 8 graphs you must own

1. 1Supply and demand (with shifts in either curve, plus tax/subsidy effects)
2. 2Consumer surplus, producer surplus, deadweight loss
3. 3Price elasticity diagrams (perfectly elastic / inelastic, unit elastic)
4. 4Production possibilities frontier (PPF) — opportunity cost and growth
5. 5Cost curves: ATC, AVC, MC, AFC and their relationships
6. 6Perfect competition: short-run and long-run firm + market diagrams
7. 7Monopoly: MR, MC, ATC, demand, deadweight loss vs perfect competition
8. 8Game theory payoff matrices (Nash equilibrium, dominant strategy)

Macroeconomics — the 7 graphs you must own

1. 1AD/AS model (short-run and long-run aggregate supply, output gap)
2. 2Money market (money supply, money demand, equilibrium interest rate)
3. 3Loanable funds market (real interest rate, savings, investment)
4. 4IS-LM model (intermediate macro — increasingly common in intro)
5. 5Phillips curve (short-run and long-run, expectations-augmented)
6. 6Foreign exchange market (currency depreciation/appreciation, capital flows)
7. 7Production function (Y = f(K, L), capital deepening, growth)

How to drill graphs

1. 1Buy or print 50 sheets of blank graph paper. Yes, paper.
2. 2For each graph, draw the baseline version 5 times in a row, freehand.
3. 3Then draw 5 variations — what shifts when X changes, what happens at the new equilibrium.
4. 4On flashcards, write the prompt ('government imposes a per-unit tax on producers') on one side and sketch the resulting graph on the other.
5. 5Drill 10 graph cards a day for 3 weeks. By week 4 the graphs become reflex.

Verbal definitions you still need

• Opportunity cost, marginal benefit/cost, comparative advantage (micro foundations)
• Price elasticity of demand and its determinants
• Externalities, public goods, free-rider problem
• GDP, CPI, unemployment definitions and the indices that measure them
• Fiscal vs monetary policy tools and transmission mechanisms
• Inflation expectations and how they shape policy

The exam-day pattern

Most intro econ exams are 60% multiple-choice graph-interpretation, 30% short-answer that requires you to draw and explain a graph, and 10% written analytical questions. If your graph muscle is built, the first 90% of the exam takes 30 minutes. The remaining 10% is where you can show off.

What the textbook won't tell you

Where students lose points

• Confusing movement along a curve with shifts of the curve itself.
• Mixing up consumer surplus and producer surplus on tax incidence questions.
• Drawing AD/AS but forgetting to label price level vs output on the axes.
• Using nominal numbers when real numbers are required (and vice versa).
• Forgetting that long-run aggregate supply is vertical.

Tools

• AceNotes — micro and macro study sets organized by graph type, AI tutor for any 'what shifts when X happens' question.
• ACDC Econ on YouTube — best free intro econ videos by a wide margin (especially for AP Macro).
• Marginal Revolution University — clean, modular video lessons.
• Khan Academy Microeconomics & Macroeconomics — free practice problem volume.