O-Level · 2281 · Interactive simulations
6 unique simulations16 lessons1 sources
Every simulation here runs the real model — the applets a teacher would put on the board, from GeoGebra, not a video of one. Pick a topic, open a card inside its lesson to run it next to the notes, or jump straight to the source. A simulation that fits several lessons is listed under each of them (17 cards in all). Back to the O Level Economics course →
A curved frontier for goods X and Y with a movable point E, a Productionfrontier slider and two tick boxes that switch the view.
A curved frontier for goods X and Y with a movable point E, a Productionfrontier slider and two tick boxes that switch the view.
Drag point E inside, onto and along the curve, then move the Productionfrontier slider to shift the whole frontier.
Demand and supply lines with DemandShift and SupplyShift sliders and tick boxes for shortage, surplus, revenue and consumer and producer surplus.
Tick Show Shortage and Show Surplus to see the gap away from equilibrium, then shift a curve and watch price P1 lead the market to a new balance.
Move the DemandShift slider: the whole demand line shifts and the market moves along supply to a new price P1 and quantity Q1.
Move the SupplyShift slider: the whole supply line shifts and the market moves along demand to a new price P1 and quantity Q1.
Find equilibrium ME where the lines cross; tick Show Shortage and Show Surplus to see why no other price can last.
Move DemandShift, then SupplyShift, and note what each does to price P1 and quantity Q1.
A straight demand line with a point A you drag: price, quantity, the elasticity and total spending update as it moves.
Demand and supply lines with DemandShift and SupplyShift sliders and tick boxes for shortage, surplus, revenue and consumer and producer surplus.
ATC, AFC, AVC and MC curves with a tick box for each, an output slider q, live cost read-outs and the Shutdown Point marked.
Drag the Sales point along Units sold: below the Break Even Point the gap between Total Costs and Sales Revenue is a loss, above it a profit.
ATC, AFC, AVC and MC curves with a tick box for each, an output slider q, live cost read-outs and the Shutdown Point marked.
A step graph of marginal income tax rates (US, 2019). Drag the income point to read Income, Marginal Rate, Effective Rate and the tax paid.
Drag point E from inside the curve onto it (idle resources put to work), then raise the Productionfrontier slider to shift the curve out.
A step graph of marginal income tax rates (US, 2019). Drag the income point to read Income, Marginal Rate, Effective Rate and the tax paid.
Each simulation stays the property of its source and is credited on the card inside the lesson. Back to the O Level Economics course →