Supply and Demand Basics

Year Level

Year 10

Duration

60 minutes

Class Size

25 students

Unit

Understanding Our Economy - Lesson 5 of 25

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Australian Curriculum Links

Humanities and Social Sciences > Economics and Business > Year 10

• Content Description:
  Analyse and explain how markets operate and how they respond to changes in supply and demand to determine prices and quantities of goods and services (linked to Economic Concepts and Reasoning).
  (Aligned with AC9HE10S03 - Interpreting information and data, explaining economic and business issues, trends and economic cause-and-effect relationships)
• Elaborations:
  Explaining cause and effect in supply and demand interaction and the impact on price determination and quantity sold【3:AC9HE10S03.md】.

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Learning Objectives

By the end of this lesson students will be able to:

1. Define the laws of supply and demand and explain their basic principles.
2. Illustrate how supply and demand curves interact to determine market price and quantity.
3. Analyse how changes in supply or demand impact prices and product availability in real-world Australian contexts.
4. Use economic vocabulary such as equilibrium price, shortage, surplus, and market adjustments accurately.
5. Apply knowledge of supply and demand to predict outcomes in a simplified market scenario.

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Resources Needed

• Whiteboard and markers
• Projector or interactive screen
• Handouts of supply and demand graphs
• Scenario cards for group activity
• Sticky notes or index cards
• Digital simulation or app illustrating supply and demand dynamics (optional)

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Lesson Breakdown

1. Introduction and Starter Activity (10 minutes)

• Begin by posing an everyday question: "Why might the price of avocados go up or down in Australian supermarkets?"
• Stimulate prior knowledge discussion in pairs, then share with the class.
• Introduce key terms: supply, demand, price, quantity, market equilibrium.
• Display a simple supply and demand graph, explaining axes and curves briefly.

2. Direct Teaching: Explanation of Supply and Demand Laws (10 minutes)

• Explain the Law of Demand: as price decreases, demand generally increases (and vice versa).
• Explain the Law of Supply: as price increases, suppliers are willing to supply more (and vice versa).
• Show graphical representation of both laws on one coordinate plane.
• Explain how the intersection represents the market equilibrium price and quantity.

3. Interactive Modelling Activity (15 minutes)

• Divide students into groups of 5. Each group receives a market scenario card with a product (e.g., tickets to a concert, seasonal fruit, smartphones).
• Groups plot hypothetical supply and demand curves on graph paper or digitally, then predict effects of changes such as a sudden increase in popularity or supply chain disruption.
• Groups discuss and prepare a short explanation of how price and quantity would change.

4. Class Discussion and Real-World Examples (10 minutes)

• Each group shares their scenario outcomes and explains their reasoning.
• Discuss Australian examples: e.g., housing market price changes, fuel prices during supply disruptions, or the impact of drought on agricultural goods.
• Highlight how external factors influence supply and demand curves.

5. Quick Write: Reflection and Application (10 minutes)

• Students write a brief paragraph answering:
  "Choose a product you use daily. Explain how supply and demand might affect its price if there is a sudden shortage or increased popularity."
• Collect responses as formative assessment.

6. Wrap-Up and Exit Ticket (5 minutes)

• Recap key terms and concepts learned.
• Exit ticket: On an index card, students write one question they still have about supply and demand or one new thing they learned.
• Provide verbal feedback and clarify any common misconceptions.

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Assessment

• Observe participation and understanding in group activities and discussions.
• Review quick write responses for comprehension of concepts and correct use of economic terms.
• Use exit tickets to gauge areas needing further clarification in the following lessons.

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Differentiation and Inclusivity

• Support students who require it with graphic organisers and glossaries of key terms.
• Challenge advanced learners by encouraging them to consider multiple factors affecting supply or demand simultaneously.
• Use a mix of visual, auditory and kinaesthetic learning activities for diverse learners.
• Ensure examples and scenarios include Australian contexts, including regional and cultural diversity.

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Cross-Curriculum Priorities and General Capabilities

• Encourage ethical reasoning around consumer behaviour and resource allocation.
• Incorporate digital literacy if digital simulation tools are used for supply and demand modelling.
• Foster critical and creative thinking through scenario analysis and predictions.
• Link to economic sustainability by discussing fair pricing and market efficiency.

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This lesson plan addresses key Humanities and Social Sciences economics concepts within the Year 10 Australian Curriculum (v9). It balances conceptual understanding with practical application and discussion relevant to students’ lives in Australia, preparing them for deeper economic analysis in later lessons of the unit "Understanding Our Economy."【3:AC9HE10S03.md】【6:AC9HE10S03.md】