Microeconomics

1. Scarcity and choice

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   Draw a PPF, name opportunity cost on a concrete tradeoff, and say what comparative advantage is doing.

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2. Supply and demand

   After Scarcity and choice — test out to unlock

   Shift curves for a shock and find the new equilibrium, including a tax or quota.

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3. Elasticity

   After Supply and demand — test out to unlock

   Compute price, income, and cross elasticities and say what they do to revenue or incidence.

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4. Consumer theory

   After Elasticity — test out to unlock

   Use budget, indifference, and MRS to find a choice, and separate income from substitution.

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5. The firm

   After Consumer theory — test out to unlock

   From production to cost curves, pick the profit-max output in the short and long run.

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6. Market structure

   After The firm — test out to unlock

   Contrast perfect competition, monopoly, and oligopoly on price, output, and deadweight loss.

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7. Market failure

   After Market structure — test out to unlock

   Work an externality, public-good, or asymmetric-information problem and name a remedy that actually fits.

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Why a path, not a playlist

Choice, markets, firms, and failure. Later headings open after the one before.

Each heading is its own course with a tutor. Later headings open when you finish — or test out of — the one before.

After you sign in

• •You land on this map — every heading is already there.
• •Take the open class, or test out of a later heading to unlock it.
• •Each heading is one shared course — same syllabus and first class for everyone. Later classes continue on your copy.