Geography · 7th Grade · Regional Study: The Americas · Weeks 19-27

Physical Geography of North America

Exploring the major landforms, climate zones, and natural resources of North America.

• Common Core State Standards
• C3: D2.Geo.4.6-8
• C3: D2.Geo.7.6-8

About This Topic

Urbanization in Latin America is characterized by some of the fastest-growing cities in the world. This topic explores the 'urban explosion' in megacities like São Paulo, Mexico City, and Buenos Aires. Students analyze why people leave rural areas (rural-to-urban migration) and the challenges this rapid growth creates, such as housing shortages, traffic congestion, and the rise of informal settlements or favelas. This aligns with standards regarding the patterns of human settlement and the complexity of urban environments.

Students also look at the creative ways these cities are trying to become more sustainable and equitable. This topic provides a great opportunity to discuss economic inequality and the 'dual' nature of many Latin American cities, where modern skyscrapers sit next to impoverished neighborhoods. This topic comes alive when students can physically model the layout of a city or participate in a simulation about urban planning.

Key Questions

1. Explain how the Rocky Mountains influence climate patterns across North America.
2. Analyze the distribution of major natural resources and their historical exploitation.
3. Compare the physical characteristics of the Canadian Shield and the Great Plains.

Learning Objectives

• Analyze the formation and impact of major North American mountain ranges, such as the Rocky Mountains and the Appalachian Mountains, on regional climates and ecosystems.
• Compare and contrast the physical characteristics, geological history, and resource distribution of distinct North American physiographic regions, including the Canadian Shield and the Great Plains.
• Explain the relationship between latitude, elevation, and proximity to large bodies of water in determining the climate zones of North America.
• Evaluate the historical and ongoing significance of natural resources, such as timber, minerals, and fossil fuels, in the economic development of North America.
• Classify the major climate zones of North America based on temperature, precipitation patterns, and characteristic vegetation.

Before You Start

Introduction to Map Skills

Why: Students need to be able to read and interpret maps, including understanding scale, symbols, and projections, to analyze geographical data.

Elements of Climate

Why: A foundational understanding of temperature, precipitation, and prevailing winds is necessary to compare and contrast North American climate zones.

Basic Understanding of Plate Tectonics

Why: Knowledge of how tectonic forces create mountains and shape landforms provides context for understanding the formation of major North American features.

Key Vocabulary

Physiographic Region	A large area of land with distinct geological characteristics, landforms, and history, such as the Great Plains or the Canadian Shield.
Orographic Effect	The change in atmospheric conditions, especially precipitation, that is caused by the elevation of a mountain range.
Continental Climate	A climate characterized by large seasonal temperature variations, with hot summers and cold winters, typically found in the interior of continents.
Natural Resource	Materials or substances such as minerals, forests, water, and fertile land that occur in nature and can be used for economic gain.
Tundra	A treeless polar or alpine biome characterized by low temperatures, short growing seasons, and permafrost.

Watch Out for These Misconceptions

Common Misconception

Informal settlements (favelas) are just places of crime and poverty.

What to Teach Instead

Students often have a one-dimensional view of these areas. Using a gallery walk of community-led art and business projects in favelas helps them see these as vibrant, organized communities with their own economies.

Common Misconception

Urbanization is a thing of the past.

What to Teach Instead

Many students think cities are 'finished' growing. Peer discussion about current growth rates in Latin America helps them realize that urbanization is an ongoing, dynamic process that is still shaping the region today.

Active Learning Ideas

Inquiry Circle: Mapping the Megacity

Groups are given a map of a Latin American megacity and must identify areas of high-density housing, industrial zones, and green spaces. They then research one specific challenge that city faces, such as water access or air pollution, and propose a solution.

50 min·Small Groups

Role Play: The City Council Meeting

Students take on roles as city officials, residents of an informal settlement, and business owners. They must debate how to spend a new grant: on improving public transit or on providing clean water and electricity to a new neighborhood.

45 min·Whole Class

Think-Pair-Share: Rural vs. Urban Life

Students read two short profiles: one of a farmer in the Andes and one of a factory worker in Mexico City. They pair up to discuss the 'push' and 'pull' factors that might lead the farmer to move to the city.

20 min·Pairs

Real-World Connections

• Meteorologists use their understanding of mountain ranges like the Rockies to forecast weather patterns, predicting where rain shadows will occur and how storms will move across the continent.
• Mining engineers and geologists explore regions like the Canadian Shield, identifying and extracting valuable mineral deposits such as nickel, copper, and gold that are essential for manufacturing and technology.
• Urban planners in cities across the Great Plains consider the availability of water resources and the potential for extreme weather events, like blizzards or droughts, when designing infrastructure and emergency preparedness plans.

Assessment Ideas

Exit Ticket

Provide students with a map of North America showing major landforms and climate zones. Ask them to identify one landform and explain how it influences the climate of an adjacent region, citing specific temperature or precipitation patterns.

Discussion Prompt

Pose the question: 'How has the distribution of natural resources shaped the history and economy of different regions within North America?' Facilitate a class discussion where students share examples of specific resources and their impact on settlement, industry, and trade.

Quick Check

Present students with descriptions of two different North American regions (e.g., the Arctic Tundra and the Sonoran Desert). Ask them to list three physical characteristics for each region and explain how these characteristics define their respective climate zones.

Frequently Asked Questions

Why is urbanization so fast in Latin America?

It is driven by 'push' factors like rural poverty and lack of land, and 'pull' factors like the hope for better jobs, education, and healthcare in the cities. Today, about 80% of Latin Americans live in urban areas.

What is a megacity?

A megacity is a metropolitan area with a total population of over 10 million people. Latin America has several, including Mexico City, São Paulo, and Rio de Janeiro.

How can active learning help students understand urbanization?

Active learning, such as a city council role play, forces students to grapple with the difficult trade-offs of urban growth. It helps them understand that there are no easy answers to problems like housing or pollution, and that different groups of people have different priorities.

What are informal settlements?

These are residential areas where people have built houses on land they don't own, often without official permission or access to city services like water and electricity. They are a common response to the lack of affordable housing in fast-growing cities.