Move the sliders for the non-price determinants of demand and supply to shift the curves, click and drag either curve, or grab points A and B to change a curve's slope. Previous positions are kept as faded shadows.
Set your starting position
Move at least one Demand control (slider, drag, or drag point A/B) and one Supply control. Once both have been touched, the original equilibrium is marked as (Q, P) and subsequent moves leave labelled shadows.
○ Demand moved○ Supply moved
Scenarios
Revenue calculator
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Price Elasticity of Demand (PED)
Drag the blue A and B points on the Demand line to change its slope and recompute PED between them.
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Factors influencing PED
Move the sliders below to see how each determinant affects the steepness of the demand curve. A steeper curve = more inelastic demand.
Applications of PED
Pricing strategy: If demand is inelastic, firms can raise prices to increase revenue. If elastic, cutting prices increases revenue.
Taxation: Governments tax goods with inelastic demand (tobacco, alcohol, fuel) to raise revenue without large falls in consumption.
Consumer behaviour: Understanding PED helps predict how strongly consumers will react to a price change — essential for market analysis.
Example: Airlines charge higher prices during peak seasons knowing demand is inelastic (few alternatives, last-minute travel).
Price Elasticity of Supply (PES)
Drag the red A and B points on the Supply line to change its slope and recompute PES between them.
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Factors influencing PES
Move the sliders below to see how each determinant affects the steepness of the supply curve. A steeper curve = more inelastic supply.
Applications of PES
Market prices: Inelastic supply means price rises cause large revenue gains for producers but output barely changes — common in agriculture and energy.
Government subsidies: Subsidies lower production costs, shifting supply right and making it more elastic over time — used in renewable energy policy.
Business planning: Firms with elastic supply can respond to booms quickly. Those with inelastic supply risk losing market share during demand surges.
Example: Wheat supply is inelastic in the short run (fixed by planting cycles); manufactured goods like smartphones are more elastic as factories can scale.
Supply
non-price determinants of supply
Demand
non-price determinants of demand
Feedback
If you used this in a lesson or for studying, please let me know how you used it so I can work on improvements.
Move the sliders for the components of AD and the factors of production for AS to shift the curves. The previous positions are kept as faded grey shadows so you can compare.
Set your starting position
Move at least one AD slider and one AS slider to set where the model begins. Once both have been moved, the original equilibrium will be marked as (Y, P) and subsequent moves will leave labelled shadows.
○ AD moved○ AS moved
Scenarios
Aggregate Supply
factors of production
Aggregate Demand
AD = C + I + G + (X − M)
Feedback
If you used this in a lesson or for studying, please let me know how you used it so I can work on improvements.
[This page is a mock-up for ideas for the future.]
Resources
Lesson handouts, worksheets and reference material for the topics covered by the interactive model could be available here. (Mock-up — I would replace the placeholders below with my own Drive links, PDFs and embeds.)
Lesson handout
An example of a Google Doc could be embedded directly in the page here. Edits made in Drive would then appear here automatically — nothing to re-upload.
Embedded Google Doc would appear here.
Worksheets & printables
Direct links to PDFs hosted on Google Drive. Set each file’s sharing to “Anyone with the link can view”. [Links below are examples.]