Economics · Year 10

Active learning ideas

Price Elasticity of Supply (PES)

Active learning helps students move beyond abstract formulas by experiencing how supply responds to price changes in real time. Calculations become meaningful when paired with role plays and debates that reveal the human and physical constraints behind PES values.

• National Curriculum Attainment Targets
• GCSE: Economics - Demand and Supply

• 20–40 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Problem-Based Learning
• 25 min · Pairs

Pairs Calculation: PES Data Drills

Provide tables with price and quantity supplied data for five industries. Pairs compute PES for given changes, classify as elastic or inelastic, and note one factor per case. Pairs then swap tables to check calculations.

Calculate the price elasticity of supply for various industries.

Facilitation Tip

During PES Data Drills, give pairs two minutes to calculate and compare their answers before revealing the correct solution as a class.

What to look for

Provide students with a simple supply schedule for a product. Ask them to calculate the PES for a price increase from $10 to $12, given a quantity supplied change from 100 to 120 units. Then, ask: 'Is this supply elastic or inelastic?'

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

Activity 02

• Problem-Based Learning
• 40 min · Small Groups

Small Groups: Firm Response Simulations

Give groups scenarios of price increases in elastic and inelastic goods. They decide production changes, considering short-run and long-run factors, then graph supply shifts. Groups present one decision to the class.

Evaluate why firms consider PES when planning production.

Facilitation Tip

In Firm Response Simulations, require each small group to document one factor that limited their ability to adjust output during the exercise.

What to look for

Pose the question: 'Imagine you are advising a bakery. Should they prioritize having elastic or inelastic supply of their signature cakes when planning for a large festival? Explain your reasoning, considering potential price changes and production constraints.'

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

Activity 03

• Problem-Based Learning
• 30 min · Whole Class

Whole Class: Elasticity Timeline Debate

Divide class into short-run and long-run teams. Present a policy raising prices; teams argue PES impacts and firm strategies. Vote on best response after structured rebuttals.

Explain how the time horizon affects a product's supply elasticity.

Facilitation Tip

During the Elasticity Timeline Debate, assign a student timer to ensure each speaker has exactly one minute to avoid side conversations.

What to look for

Ask students to write down two reasons why a firm might consider the PES of its product before deciding to increase production capacity. They should also state one factor that typically makes supply more inelastic in the short run.

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

Activity 04

• Problem-Based Learning
• 20 min · Individual

Individual: PES Curve Sketching

Students receive price-quantity points for a good. They plot supply curves, calculate PES at two points, and label elastic/inelastic sections. Share sketches in a gallery walk.

Calculate the price elasticity of supply for various industries.

Facilitation Tip

For PES Curve Sketching, provide graph paper with pre-labeled axes so students focus on elasticity shapes rather than axis scaling.

What to look for

Provide students with a simple supply schedule for a product. Ask them to calculate the PES for a price increase from $10 to $12, given a quantity supplied change from 100 to 120 units. Then, ask: 'Is this supply elastic or inelastic?'

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

A few notes on teaching this unit

Teachers should start with concrete, time-bound examples such as concert ticket resales to show how supply limits affect prices. Avoid over-reliance on textbook graphs early on; instead, have students derive the meaning of PES from raw data before they connect it to curves. Research suggests students grasp elasticity better when they first experience inelasticity through fixed constraints before exploring elastic cases, so sequence examples accordingly.

Students will articulate why some goods have elastic supply while others do not, use the formula correctly in calculations, and justify decisions based on supply timelines and industry constraints. Evidence of learning includes accurate PES calculations, reasoned debates, and correctly sketched supply curves.

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Watch Out for These Misconceptions

• During PES Data Drills, watch for students who confuse the PES formula with the price elasticity of demand formula.

  During PES Data Drills, circulate and ask each pair to read the formula aloud before calculating, ensuring they use 'quantity supplied' not 'quantity demanded' in the numerator.

• During Firm Response Simulations, watch for students who assume all firms can adjust output instantly regardless of time frame.

  During Firm Response Simulations, hand each group a 'Short-Run Capacity Card' that limits their output to half the original amount to visibly demonstrate inelasticity.

• During Elasticity Timeline Debate, watch for students who claim PES values above 1 mean unlimited supply growth is always possible.

  During Elasticity Timeline Debate, require groups to cite at least one finite resource or regulation that would cap expansion for their chosen industry.

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Methods used in this brief

• Problem-Based Learning