Economics & Business · Year 11

Active learning ideas

Factors Affecting PED and Total Revenue

Active learning works for this topic because students often confuse general rules with specific cases. By moving between graphs, simulations, and real products, they see how factors like substitutes and time shape elastic or inelastic demand. Hands-on tasks help students move from abstract rules to concrete pricing decisions that affect business revenue.

• ACARA Content Descriptions
• AC9EC11K04

• 30–50 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Case Study Analysis
• 45 min · Small Groups

Graphing Station: PED Curves

Provide graphs of elastic, inelastic, and unit elastic demand. In small groups, students plot price changes, calculate PED using the formula, and shade total revenue areas before and after. Groups present one finding to the class.

Evaluate how the availability of substitutes impacts demand elasticity.

Facilitation Tip

During Graphing Station: PED Curves, circulate and ask each pair to justify one point on their graph before moving on to the next station.

What to look for

Provide students with a scenario: 'A coffee shop increases the price of a latte from $4 to $5. The number of lattes sold drops from 200 to 150 per day.' Ask students to calculate the PED and state whether demand is elastic or inelastic. Then, ask them to predict the change in total revenue for the coffee shop.

• Analyze
• Evaluate
• Create
• Decision-Making
• Self-Management

Activity 02

• Case Study Analysis
• 50 min · Small Groups

Market Simulation: Pricing Game

Assign roles as firm managers for products like coffee (inelastic) or fashion items (elastic). Groups raise or lower prices, track classmate 'demand' responses on worksheets, and compute revenue changes over three rounds.

Predict the change in total revenue for a firm raising prices with elastic demand.

Facilitation Tip

In Market Simulation: Pricing Game, limit each round to 60 seconds so students focus on immediate revenue effects rather than strategy overreach.

What to look for

Display a list of products: gasoline, specific brand of smartphone, prescription medication, a popular video game. Ask students to quickly classify the demand for each as likely elastic or inelastic and briefly explain their reasoning, focusing on substitutes and necessity vs. luxury.

• Analyze
• Evaluate
• Create
• Decision-Making
• Self-Management

Activity 03

• Case Study Analysis
• 30 min · Pairs

Case Study Pairs: Real Products

Pairs analyze Australian examples: petrol versus streaming services. They list PED factors, predict revenue from a 10% price hike, and debate strategies using evidence from news articles provided.

Analyze the importance of PED for pricing strategies.

Facilitation Tip

For Case Study Pairs: Real Products, assign one student to present the elasticity finding while the other explains the revenue impact to ensure both skills are practiced.

What to look for

Pose this question: 'Imagine you are advising a small business that sells handmade jewelry. What specific factors would you investigate to determine the price elasticity of demand for their products, and how would this information guide your pricing strategy to maximize total revenue?'

• Analyze
• Evaluate
• Create
• Decision-Making
• Self-Management

Activity 04

• Case Study Analysis
• 40 min · Whole Class

Whole Class Debate: Substitute Impact

Divide class into teams arguing if more substitutes make demand elastic or inelastic. Use timers for evidence sharing, then vote and calculate sample revenue outcomes on board.

Evaluate how the availability of substitutes impacts demand elasticity.

Facilitation Tip

During Whole Class Debate: Substitute Impact, require students to cite at least one substitute for the product they defend as elastic or inelastic.

What to look for

Provide students with a scenario: 'A coffee shop increases the price of a latte from $4 to $5. The number of lattes sold drops from 200 to 150 per day.' Ask students to calculate the PED and state whether demand is elastic or inelastic. Then, ask them to predict the change in total revenue for the coffee shop.

• Analyze
• Evaluate
• Create
• Decision-Making
• Self-Management

A few notes on teaching this unit

Teachers should start with visual comparisons so students see elasticity as a spectrum, not a fixed label. Avoid defining PED solely through formulas—use graphs and simulations to build intuition first. Research shows that students grasp elasticity better when they experience the trade-off between price and quantity through role-play and data analysis rather than lecture alone.

Students will explain why PED varies across products and how firms adjust pricing based on elasticity. They will calculate PED, predict revenue changes, and justify strategies using evidence from activities. Groups should articulate the link between determinants, elasticity, and total revenue in discussions and written responses.

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Watch Out for These Misconceptions

• During Graphing Station: PED Curves, watch for students who assume all demand curves have the same shape or slope.

  During Graphing Station: PED Curves, have students compare steeper and flatter curves side-by-side, then calculate PED at a common point to show how elasticity differs even when both curves are downward sloping.

• During Market Simulation: Pricing Game, watch for students who believe raising prices always increases revenue.

  During Market Simulation: Pricing Game, pause after each round to calculate the revenue change publicly, so students see the inverse relationship in real time.

• During Whole Class Debate: Substitute Impact, watch for students who claim time does not affect elasticity.

  During Whole Class Debate: Substitute Impact, introduce a timeline role-play where students act as consumers adjusting purchases over weeks, months, and years to highlight how elasticity increases with time.

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Methods used in this brief

• Case Study Analysis