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Hand-drawn competitive firm comic showing a wheat farmer and student comparing market supply and demand with a separate firm graph, transferring price to a horizontal marginal revenue line and selecting firm output.

Perfect Competition: Firm and Market Graphs Explained

Separate the firm and market graphs in perfect competition. Find price, output, profit and shutdown, then try three original interactive questions.

Hand-drawn supply and demand comic showing a student marking the original intersection and its price and quantity guides before drawing any market change.

Supply and Demand Graphs: Shifts, Equilibrium and Controls

Read supply and demand graphs, compare equilibria and identify binding price controls. Work a numerical example and try three interactive questions.

Hand-lettered market-stall comic with a tutor pointing to a revenue rectangle while a student holds a triangle beside shapes labelled surplus and lost trades.

Revenue, Surplus and Deadweight Loss: Graph Areas

Pastel comic of a puzzled student with a calculator receipt showing 90, while a tutor labels an answer as 90 dollars profit and points to value, unit and meaning cards.

Economic Calculations: Profit, Marginal Values and Units

Cut-paper comic of a student and tutor comparing 10-dollar and 9-dollar price tags with a 10-percent price reduction and 20-percent quantity increase beside a stretching shopping basket.

Price Elasticity: Percentage Changes, Midpoint and Revenue

Woodblock bakery comic of a puzzled student with a long receipt and a tutor comparing buns and coins under per-unit and per-dollar labels.

Average Cost and Marginal Utility per Dollar: Ratios

Felt-and-clay comic of a courier robot and a pigeon distinguishing a single added parcel from the full delivery load.

Marginal Cost, Revenue and Product: Calculate the Change

Watercolor detective comic of two students and a dog examining skills, opportunity, market power and inheritance as possible mechanisms behind economic gaps.

Income Inequality: Causes, Evidence and Policy Choices

Chalk comic of a tutor and an owl fitting area pieces A and B beside the Gini formula A divided by the sum of A and B.

Gini Coefficient: Calculate and Interpret the Area Ratio

The Lorenz curve plots cumulative shares

The Lorenz curve plots cumulative shares

Origami town comic of a teacher and a fox examining two joining storefronts while other rival shops remain separate.

HHI Merger Thresholds: Apply the 2023 Structural Screen

Ceramic mosaic comic of an engineer and an octopus operating a shared water network with marginal-cost, average-cost and price-cap valves.

Natural Monopoly Regulation: Pricing and Cost Recovery

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