Economics & Business · Year 7

Active learning ideas

Public Goods vs. Private Goods

Active learning helps Year 7 students grasp public and private goods by moving beyond definitions to tangible examples and real-world dilemmas. When students sort, debate, and simulate, they internalise concepts like rivalry and excludability through concrete experiences rather than abstract notes.

• ACARA Content Descriptions
• AC9HE7K02

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

Activity 01

• Philosophical Chairs
• 35 min · Small Groups

Card Sort: Goods Classification

Prepare cards listing items like ice cream, street lights, a movie ticket, and national parks. In small groups, students sort them into public or private goods, noting rivalry and excludability for each. Regroup to share justifications and vote on borderline cases.

Differentiate between a public good and a private good with examples.

Facilitation Tip

During Card Sort: Goods Classification, provide a mix of clear private and public examples, including a few ambiguous cases to spark debate among pairs.

What to look for

Present students with a list of items and services (e.g., a concert ticket, a public footpath, a mobile phone plan, a lighthouse). Ask them to write 'P' for private good or 'U' for public good next to each, and briefly explain their reasoning for two items based on rivalry and excludability.

• Analyze
• Evaluate
• Self-Awareness
• Social Awareness

Activity 02

• Philosophical Chairs
• 40 min · Pairs

Free Rider Role-Play

Assign roles in pairs: contributors and free riders deciding to fund a class 'public good' like a shared treat. Observe outcomes when free riders emerge, then debrief on market failure. Students journal why government provision might be needed.

Explain why the private market often fails to provide sufficient public goods.

Facilitation Tip

In Free Rider Role-Play, assign roles with subtle incentives to highlight how non-payers influence group outcomes, ensuring students experience the tension directly.

What to look for

Pose the question: 'Imagine a new, free public swimming pool is proposed for your local area. What problems might arise if it were funded only by voluntary donations instead of taxes? Discuss the free rider problem in this context.'

• Analyze
• Evaluate
• Self-Awareness
• Social Awareness

Activity 03

• Philosophical Chairs
• 45 min · Small Groups

Market Simulation: Provision Game

In small groups, simulate a market for a public good like fireworks. Groups bid but allow free riding; track underprovision. Compare to private good auction like candy. Discuss government fixes.

Justify why national defense is considered a public good.

Facilitation Tip

For Market Simulation: Provision Game, set a tight time limit to create urgency, reminding students that scarcity and shared costs mirror real economic pressures.

What to look for

On a small card, ask students to define 'non-excludable' in their own words and provide one Australian example of a non-excludable service that the government provides. They should also state why this service is important.

• Analyze
• Evaluate
• Self-Awareness
• Social Awareness

Activity 04

• Gallery Walk
• 30 min · Pairs

Gallery Walk: Australian Examples

Post stations with images of roads, private cars, ABC broadcasts, and pizzas. Individuals or pairs add sticky notes classifying and explaining. Whole class tours to debate and refine.

Differentiate between a public good and a private good with examples.

Facilitation Tip

During Gallery Walk: Australian Examples, ask students to photograph or sketch examples they find, prompting them to connect abstract traits to local contexts.

What to look for

Present students with a list of items and services (e.g., a concert ticket, a public footpath, a mobile phone plan, a lighthouse). Ask them to write 'P' for private good or 'U' for public good next to each, and briefly explain their reasoning for two items based on rivalry and excludability.

• Understand
• Apply
• Analyze
• Create
• Relationship Skills
• Social Awareness

A few notes on teaching this unit

Teachers should start with familiar examples before introducing edge cases, as students’ prior knowledge shapes their understanding. Avoid overemphasising government provision—focus on the traits of goods first, then discuss who supplies them. Research suggests that role-play and simulations deepen retention, but debriefing is critical to link the experience to the concepts. Keep language precise, avoiding terms like 'shared' for public goods, as it can confuse rivalry with excludability.

Students will confidently classify goods using rivalry and excludability, explain why some goods need public funding, and identify how free riders affect provision. Success looks like precise language in discussions, accurate sorting during activities, and nuanced reasoning in role-plays and simulations.

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Watch Out for These Misconceptions

• During Card Sort: Goods Classification, watch for students who assume all government-provided items are public goods. Redirect them by asking, 'Would a private company realistically exclude someone from this good? If so, it’s not public.'

  During Card Sort: Goods Classification, ask students to justify each placement by applying the traits aloud. For ambiguous examples like toll roads, prompt them to test both rivalry and excludability before finalising their sort.

• During Free Rider Role-Play, some students may believe voluntary contributions are always sufficient for public goods. Intervene by freezing the role-play midway to tally actual contributions and discuss why totals fall short.

  During Free Rider Role-Play, after the simulation, ask groups to calculate the shortfall caused by free riders and compare it to the required budget. This shows how taxes fill the gap, addressing the misconception directly.

• During Gallery Walk: Australian Examples, students might conflate non-excludability with 'free of cost.' Stop them to clarify that non-excludability means exclusion is impractical, not impossible, using examples like national parks with entry fees.

  During Gallery Walk: Australian Examples, ask students to find one example where exclusion is attempted but still impractical (e.g., public beaches with lifeguards). Discuss why exclusion fails and how taxes fund these services.

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Methods used in this brief

• Philosophical Chairs
• Gallery Walk