Economics & Business · Year 10

Active learning ideas

Supply and Demand in Business Decisions

Active learning helps students see how abstract supply and demand forces operate in real time. When they trade, graph, and role-play, the invisible hand of markets becomes visible through their own decisions and outcomes.

• ACARA Content Descriptions
• AC9HE10K01
• AC9HE10K02

• 30–45 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Simulation Game
• 45 min · Small Groups

Simulation Game: Market Auction Game

Assign students as buyers and sellers with inventory cards and budgets. Conduct auctions for goods like coffee beans; record transaction prices. Introduce a supply shock, such as a crop failure, and auction again. Groups graph initial and shifted curves, noting equilibrium changes.

Explain how changes in supply and demand affect equilibrium price and quantity in a market.

Facilitation Tip

During the Market Auction Game, circulate and prompt bidders to explain their reasoning aloud so peers hear market signals in real time.

What to look for

Provide students with a scenario: 'A popular new video game is released, increasing demand. Simultaneously, a shortage of microchips increases production costs.' Ask them to draw the supply and demand curves, show the shifts, and explain the impact on the equilibrium price and quantity of the game.

• Apply
• Analyze
• Evaluate
• Create
• Social Awareness
• Decision-Making

Activity 02

• Simulation Game
• 30 min · Pairs

Graphing Workshop: Curve Shifts

Provide scenarios like a subsidy for electric cars. In pairs, students draw demand and supply curves on mini-whiteboards, shift the relevant curve, and label new equilibrium. Pairs share one finding with the class via gallery walk.

Analyze how businesses use supply and demand analysis to inform pricing strategies and production planning.

Facilitation Tip

In the Graphing Workshop, ask pairs to present one curve shift at a time, forcing them to isolate variables before combining effects.

What to look for

Present students with a graph showing a supply and demand model. Ask them to identify the equilibrium price and quantity. Then, pose a question like, 'What would happen to the equilibrium price if a new, cheaper production method was invented?' Students write their answer and reasoning.

• Apply
• Analyze
• Evaluate
• Create
• Social Awareness
• Decision-Making

Activity 03

• Simulation Game
• 40 min · Small Groups

Case Analysis: Tax Impact Role-Play

Present a business case with a new sales tax. Groups role-play as executives: debate production cuts or price hikes, use supply-demand graphs to justify. Present decisions and vote on best strategy as a class.

Evaluate the impact of government interventions (e.g., taxes, subsidies) on business supply decisions.

Facilitation Tip

For the Tax Impact Role-Play, assign students roles as buyers, sellers, or government so they experience how tax incidence varies with curve slopes.

What to look for

Facilitate a class discussion using the prompt: 'Imagine the government imposes a tax on sugary drinks. How might this affect the supply decisions of a beverage manufacturer? What are the potential consequences for consumers?' Encourage students to reference supply and demand shifts in their responses.

• Apply
• Analyze
• Evaluate
• Create
• Social Awareness
• Decision-Making

Activity 04

• Simulation Game
• 35 min · Individual

Data Hunt: Real Market Trends

Students research Australian examples like housing demand shifts using ABS data. Individually graph findings, then collaborate to predict business responses. Share predictions in a whole-class discussion.

Explain how changes in supply and demand affect equilibrium price and quantity in a market.

What to look for

Provide students with a scenario: 'A popular new video game is released, increasing demand. Simultaneously, a shortage of microchips increases production costs.' Ask them to draw the supply and demand curves, show the shifts, and explain the impact on the equilibrium price and quantity of the game.

• Apply
• Analyze
• Evaluate
• Create
• Social Awareness
• Decision-Making

A few notes on teaching this unit

Teachers should anchor lessons in concrete trading before abstract graphs. Start with the Auction Game to build intuition, then move to graphing to formalize patterns. Avoid diving straight into equations; let students discover equilibrium visually and kinesthetically. Research shows this sequence builds durable understanding before introducing elasticity formulas.

Students will confidently explain how price and quantity adjust to shifts in supply or demand. They should calculate new equilibria, justify business responses, and connect theory to practice through evidence from activities.

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Watch Out for These Misconceptions

• During the Market Auction Game, watch for students who believe the auctioneer sets prices arbitrarily.

  Stop the game after a few rounds and ask sellers with unsold units to explain why they lowered bids. Have buyers with unmet demand describe why they raised offers, tying each adjustment to excess supply or demand.

• During the Graphing Workshop, watch for students who move only price or only quantity when a curve shifts.

  Hand a ruler and ask each pair to measure the distance between old and new equilibrium points. Require them to state both price and quantity changes before sharing with the class.

• During the Tax Impact Role-Play, watch for students who assume all firms suffer equal profit losses from a tax.

  Have groups compare tax payments and remaining profits across scenarios. Ask each group to present why the burden felt heavier on one side of the market based on curve slopes they observed.

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Methods used in this brief

• Simulation Game