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Graphl

Economic models you can actually see move. Every curve is computed and every shift is verified. Built for students who want intuition, not just diagrams.

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  • HSC Economics track
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  • Economics glossary
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Educational purposes only, not financial advice. Graphl teaches which economic framework applies and how its mechanism works; it does not solve assessment problems for you.

Learn

Daily practice, quizzes, definitions, and the concept library, the study side of the site.

Today's scenario

Fiscal expansion under floating rates

Before you watch it: which curve moves, and which way? Predict first, then let Mundell-Fleming animate the answer.

Play today's scenario →Or quiz me instead

Exam mode

Sit a timed paper ⏱

Pick your models, set the clock, and get a score report with your weak spots at the end. The closest thing to the real exam.

Compare view

One shock, two models

Watch the same event through two different lenses, side by side. Solow vs endogenous growth will change how you think.

Test yourself

Drag the curves to where you think the new equilibrium lands, graded on which curve, which direction, how far. Free plan includes 10 questions a day; Pro makes it unlimited.

Supply & Demand7 scenariosAggregate Supply – Aggregate Demand19 scenariosProduction Possibility Frontier3 scenariosLabor Market3 scenariosLoanable Funds Market3 scenariosMoney Market7 scenariosIS-LM3 scenariosPhillips Curve7 scenariosKeynesian Cross7 scenariosSolow-Swan Growth Model3 scenariosMonopoly & Cost Curves7 scenariosPrice Elasticity of Demand & Supply7 scenariosConsumer & Producer Surplus7 scenariosPerfect Competition (Firm)3 scenariosMonopolistic Competition2 scenariosExternalities & Pigouvian Taxes7 scenariosQuantity Theory of Money2 scenariosFisher Equation2 scenariosMundell-Fleming3 scenariosTaylor Rule2 scenariosCournot Competition2 scenariosBathtub Model of Unemployment2 scenariosMonopsony & Minimum Wage2 scenariosSearch & Matching (Beveridge Curve)2 scenariosMalthusian Growth Model2 scenariosCAPM (Security Market Line)3 scenariosBaumol-Tobin Money Demand2 scenariosHyperbolic Discounting & Present Bias2 scenariosProspect Theory Value Function2 scenariosGravity Model of Trade2 scenariosPurchasing Power Parity2 scenariosAbsolute vs. Comparative Advantage7 scenariosPublic Goods & the Free-Rider Problem3 scenariosTragedy of the Commons3 scenariosConsumer Theory (Indifference Curves)3 scenariosProducer Theory (Isoquants & Isocosts)2 scenariosLabor-Leisure Tradeoff3 scenariosHuman Capital & the Mincer Equation3 scenariosInterest Rate Parity3 scenariosTerm Structure of Interest Rates3 scenariosMoney Multiplier3 scenariosHarrod-Domar Growth Model3 scenariosEndogenous Growth (AK Model)3 scenariosBusiness Cycle Phases7 scenariosGovernment Budget Constraint & Seigniorage3 scenariosLinear Regression & OLS2 scenariosDifference-in-Differences2 scenariosAuction Theory3 scenariosAdverse Selection (Lemons Problem)3 scenariosProbit & Logit Models3 scenariosConvergence Hypothesis3 scenariosLorenz Curve & Gini Coefficient2 scenariosLaffer Curve3 scenariosJ-Curve (Trade Balance after Depreciation)2 scenariosTariffs & Protection (Small Open Economy)7 scenarios

Glossary

59 terms in plain English. Search here, or browse the full glossary →

adverse selection

Bad types crowding out good ones when quality is hidden before a deal, the lemons problem.

aggregate demand

Total planned spending on an economy's output at each price level, consumption, investment, government, and net exports.

arbitrage

Riskless profit from price differences, whose pursuit eliminates those very differences.

beta

An asset's sensitivity to market-wide swings, the only risk that earns a premium in the CAPM.

capital mobility

How freely financial capital crosses borders chasing returns.

comparative advantage

Being able to produce something at a lower opportunity cost than others, the true basis for trade.

Concept library

93 written explainers, definition, key equation, intuition, and an exam tip each.

Micro Foundations

Production Possibility FrontierAbsolute vs. Comparative AdvantageSupply & DemandPrice Elasticity of Demand & SupplyConsumer & Producer SurplusMonopolyPerfect CompetitionOligopoly & Monopolistic CompetitionExternalities & Pigouvian TaxesPublic Goods & the Free-Rider ProblemTragedy of the CommonsCircular Flow of Income

Advanced Micro

Consumer Theory (Indifference Curves)Slutsky Equation & Hicksian DemandProducer Theory (Isoquants & Isocosts)Cost Minimization & Profit MaximizationGeneral Equilibrium & the Edgeworth BoxWelfare Economics & Pareto EfficiencyGame Theory & Nash EquilibriumCournot CompetitionRepeated Games & the Folk TheoremBayesian Games & Incomplete InformationAdverse Selection (Lemons Problem)Moral HazardSignaling & Screening (Spence)Auction Theory

Macro Foundations

AS-AD (Aggregate Supply – Aggregate Demand)Keynesian Cross & the MultiplierPhillips CurveGDP, Unemployment & Inflation MeasurementBusiness Cycle PhasesMoney MultiplierQuantity Theory of Money (MV = PY)Lorenz Curve & Gini CoefficientLaffer Curve

Advanced Macro & Growth

IS-LMIS Curve Microfoundations (PIH)Mundell-Fleming (Open-Economy IS-LM)Fisher EquationGovernment Budget Constraint & SeigniorageSolow-Swan Growth ModelHarrod-Domar Growth ModelEndogenous Growth (Romer, AK, Lucas)Ramsey-Cass-Koopmans ModelOverlapping Generations ModelGrowth Accounting & the Solow ResidualMalthusian Growth ModelConvergence HypothesisTaylor RuleReal Business Cycle Theory

Labor Economics

Labor Supply & DemandLabor-Leisure TradeoffHuman Capital & the Mincer EquationEfficiency Wage TheorySearch & Matching (DMP)Bathtub Model of UnemploymentMonopsony & Minimum Wage Models

Trade & Open Economy

Ricardian Trade ModelHeckscher-Ohlin ModelStolper-Samuelson TheoremGravity Model of TradePurchasing Power ParityBalance of PaymentsInterest Rate ParityTariffs & ProtectionJ-Curve

Money & Finance

Money MarketLoanable Funds MarketBaumol-Tobin Money DemandCapital Asset Pricing Model (CAPM)Efficient Market HypothesisModigliani-Miller TheoremTerm Structure of Interest RatesBlack-Scholes Option Pricing

Econometrics

Linear Regression & OLSClassical Assumptions (Gauss-Markov, BLUE)Instrumental Variables & 2SLSHausman TestDifference-in-DifferencesPanel Data (Fixed & Random Effects)Regression Discontinuity DesignTime Series (Unit Roots, Autocorrelation)Trend vs. Difference StationarityProbit & Logit Models

Behavioral Economics

Prospect TheoryBounded RationalityHyperbolic Discounting & Present BiasNudge Theory & Choice Architecture

Optimization Toolkit

Lagrangian MultipliersKuhn-Tucker (KKT) ConditionsEnvelope TheoremHessian & Bordered HessianDynamic Optimization Basics