Economics practice

Move the demand and supply curves, watch equilibrium update, and test yourself on shifts vs. movements and simultaneous changes.

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Set a binding ceiling or floor, see the shortage or surplus appear, and answer five classic exam questions on price controls.

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Drag demand and cost on an interactive monopoly graph. MR = MC, the monopoly markup, and the welfare triangle — with five exam-style questions.

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Watch total revenue climb, peak, and fall along a linear demand curve. Five questions on elastic vs. inelastic regions and the unit-elasticity midpoint.

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Open a recessionary or inflationary gap, step time forward, and watch the economy self-correct. Five questions on shifts, supply shocks, and the vertical LRAS.

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Build GDP from C + I + G + NX, then test yourself on what counts, the final-vs-intermediate trap, and nominal vs. real GDP.

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Reprice a fixed basket to see inflation appear, then answer five questions on the CPI, who wins and loses, substitution bias, and real wages.

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Slide the MPC and watch one dollar of spending ripple out to GDP. Five questions on multipliers, crowding out, and automatic stabilizers.

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Shift the money supply in the money market and watch the interest rate move. Five questions on open market operations and the liquidity trap.

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