The Diagram Lab

Interactive economics diagrams that respond to your input. Drag sliders, watch curves shift, see profits form — then challenge yourself to prove you understand.

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Total Points
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Best Streak
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Challenges Done
Live
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Supply & Demand

Shift curves, add taxes and subsidies, change elasticity, set price controls — watch equilibrium change in real time.

Demand/Supply Shifts Elasticity Tax & Subsidy Price Controls CS / PS / DWL 10 Challenges
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Market Structures

Compare monopoly, perfect competition, and monopolistic competition. Adjust output, see profit rectangles form, toggle short-run vs long-run.

Monopoly Perfect Competition Mon. Competition SR / LR Toggle Profit Rectangles 10 Challenges
Challenge Progress0%
Coming Soon
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Externalities & Market Failure

Visualise negative and positive externalities, welfare loss, Pigouvian taxes, and optimal output with MSC/MSB curves.

Negative Externalities Positive Externalities Pigouvian Tax Welfare Loss
Coming Soon
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AD/AS & Macro Policy

Shift AD and AS curves, explore Keynesian vs monetarist models, and see the effects of fiscal and monetary policy.

AD/AS Model Keynesian LRAS Monetarist LRAS Fiscal Policy

How Diagram Lab Works

1

Pick a Module

Choose a topic — supply & demand, market structures, and more coming soon. Each module has its own interactive canvas.

2

Drag & Explore

Move sliders to shift curves, change parameters, and watch the diagram update in real time. See surplus areas, profit rectangles, and DWL form before your eyes.

3

Challenge Yourself

Enter challenge mode — economics scenarios you need to solve by adjusting the diagram. Earn points, build streaks, and track your mastery.