Geography · Year 10 · Urbanization and the Future of Cities · Term 3

Challenges of Rapid Urban Growth: Informal Settlements

Investigate issues such as informal settlements (slums) and their social, economic, and environmental implications.

• ACARA Content Descriptions
• AC9G10K06

About This Topic

Sustainable urban design is about reimagining our cities to be more resilient, livable, and environmentally friendly. This topic explores innovative solutions for the 'big three' urban challenges: transport, housing, and waste. Students look at concepts like 'green infrastructure', using parks and wetlands to manage stormwater and reduce the urban heat island effect, and 'circular economy' models for waste management.

In the Australian context, this involves looking at how our cities can adapt to a changing climate, including more frequent heatwaves and floods. The curriculum emphasizes the link between urban design and human wellbeing, showing how walkable streets and access to nature improve mental and physical health. Students grasp these concepts faster through collaborative design projects and station rotations where they evaluate different 'smart city' technologies and their impact on sustainability.

Key Questions

1. Analyze the social and economic consequences of inadequate housing in urban areas.
2. Explain the push and pull factors leading to the growth of informal settlements.
3. Evaluate different strategies for improving living conditions in informal settlements.

Learning Objectives

• Explain the push and pull factors that contribute to the formation of informal settlements.
• Analyze the social, economic, and environmental consequences of inadequate housing in rapidly growing urban areas.
• Evaluate the effectiveness of different strategies used by governments and NGOs to improve living conditions in informal settlements.
• Compare the challenges faced by informal settlements in different global cities, including at least one Australian example.

Before You Start

Population Distribution and Change

Why: Students need to understand global and national population trends, including migration patterns, to grasp the drivers of urbanization.

Economic and Social Indicators

Why: Understanding concepts like GDP per capita, poverty rates, and access to services is essential for analyzing the implications of informal settlements.

Key Vocabulary

Informal settlement	A residential area where housing and infrastructure are built in an unplanned and often illegal manner, lacking secure tenure and basic services.
Slum	A term often used interchangeably with informal settlement, referring to densely populated, impoverished urban areas characterized by substandard housing and poor living conditions.
Urbanization	The process of population shift from rural to urban areas, the corresponding decrease in the proportion of people living in rural areas, and the ways in which societies adapt to this change.
Gentrification	The process by which wealthier individuals move into, renovate, and restore housing in deteriorated urban neighborhoods, often displacing lower-income residents.
Squatter settlement	A settlement where people occupy land or buildings to which they do not have legal title, often on the periphery of cities or on marginal land.

Watch Out for These Misconceptions

Common Misconception

Sustainable cities are a futuristic dream that will be too expensive to build.

What to Teach Instead

Many sustainable solutions, like planting trees or improving bike lanes, are relatively low-cost and are being implemented right now. Peer-led research into cities like Curitiba or Copenhagen helps students see that sustainable design is a practical, existing reality with long-term economic benefits.

Common Misconception

Technology alone will solve all our urban problems.

What to Teach Instead

While 'smart' tech helps, sustainability also requires changes in human behavior and social policy. Using a 'systems thinking' approach in a collaborative investigation helps students see that a high-tech city that is still socially divided or car-dependent is not truly sustainable.

Active Learning Ideas

Inquiry Circle: The Green Roof Challenge

Groups are given a blueprint of a standard city block. They must 'retrofit' it with sustainable features like green roofs, permeable paving, and community gardens. They must justify their choices based on how they improve both environmental health and resident wellbeing.

60 min·Small Groups

Stations Rotation: Smart City Tech

Set up stations featuring different technologies: Smart Waste Bins, Electric Bus Networks, Vertical Forests, and Greywater Recycling. Students evaluate each tech based on its cost, ease of implementation, and potential to reduce a city's carbon footprint.

45 min·Small Groups

Think-Pair-Share: The Walkable City

Students discuss their own neighborhood: Can they walk to a shop? A park? A library? They pair up to brainstorm three changes that would make their area less car-dependent and share their 'walkability audit' with the class to identify common urban design flaws.

25 min·Pairs

Real-World Connections

• Urban planners and policymakers in cities like Mumbai, India, and Nairobi, Kenya, grapple with providing basic services such as clean water, sanitation, and electricity to vast informal settlements, often employing participatory development approaches.
• Non-governmental organizations (NGOs) such as Slum Dwellers International work with communities in informal settlements across Asia, Africa, and Latin America to advocate for land rights, improve housing, and develop sustainable infrastructure projects.
• In Australia, while formal slums are rare, areas with housing stress and inadequate infrastructure in rapidly expanding urban fringes, such as parts of Western Sydney, present challenges that require similar considerations of service provision and community development.

Assessment Ideas

Discussion Prompt

Pose the question: 'Imagine you are a city council member. Which strategy for improving informal settlements (e.g., slum upgrading, relocation, in-situ development) would you prioritize for a growing city like Jakarta, and why? Consider the social, economic, and environmental impacts of your choice.'

Quick Check

Provide students with a short case study of an informal settlement in a developing country. Ask them to identify two push factors and two pull factors that likely contributed to its growth, and one specific social and one specific environmental challenge it faces.

Exit Ticket

On an index card, students write one sentence explaining the difference between 'in-situ upgrading' and 'relocation' as strategies for informal settlements. They then list one potential benefit and one potential drawback for each strategy.

Frequently Asked Questions

What is the 'Urban Heat Island' effect?

This occurs when cities replace natural land cover with dense concentrations of pavement, buildings, and other surfaces that absorb and retain heat. This can make urban areas several degrees warmer than surrounding rural areas, increasing energy demand for cooling and posing health risks during heatwaves.

How does 'green infrastructure' work?

Green infrastructure uses natural systems, like street trees, rain gardens, and wetlands, to provide services that were traditionally handled by 'grey' infrastructure (pipes and concrete). For example, a wetland can filter stormwater more cheaply and beautifully than a treatment plant while also providing a habitat for birds.

What are the best hands-on strategies for teaching urban design?

Design challenges are the most effective. When students have to physically or digitally 'build' a sustainable neighborhood, they realize the spatial trade-offs involved (e.g., more housing vs. more parkland). This active problem-solving makes the principles of urban design much more memorable and meaningful.

What is a 'circular city'?

A circular city is one that aims to eliminate waste by keeping resources in use for as long as possible. This involves designing buildings that can be repurposed, creating systems for sharing goods (like tool libraries), and ensuring that all organic waste is composted and returned to urban farms.