Physical Geography of South America

Active learning works for this topic because students need to visualize and interact with complex spatial patterns. South America’s geography is too large to hold in one glance, so hands-on analysis of transects, biomes, and layers helps students connect abstract concepts to concrete examples.

• 7th Grade
• Geography
• 3 activities
• 30 min–40 min

Learning Objectives

1. Compare the physical characteristics of the Andes Mountains and the Amazon Basin, identifying at least three distinct landforms in each.
2. Explain how elevation and proximity to the equator influence temperature and precipitation patterns in South America, citing specific examples.
3. Analyze the relationship between specific landforms (e.g., Andes, Amazon River) and the distribution of unique plant and animal species.
4. Evaluate the role of natural resources found in South America, such as fertile soil in the Pampas or mineral deposits in the Andes, in regional economic activities.

Gallery Walk

⏱ 35 min·Pairs

Cross-Section Analysis: The Andes Climate Transect

Give each pair an elevation profile running west-to-east across South America at approximately 15 degrees south latitude, plus temperature and rainfall data for 6-8 stations along the transect. Students annotate the profile with climate zones, identify orographic effects on each slope, and sketch what vegetation they would expect at each station. Groups compare annotations and resolve disagreements by returning to the data.

Prepare & details

Explain how the Andes Mountains create diverse climate zones in South America.

Facilitation Tip: During the Cross-Section Analysis, have students plot temperature and precipitation data points on a shared graph before drawing conclusions about climate zones.

Setup: Wall space or tables arranged around room perimeter

Materials: Large paper/poster boards, Markers, Sticky notes for feedback

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

Gallery Walk

⏱ 30 min·Small Groups

Gallery Walk: South American Biomes

Post large photographs of 6 biomes (Atacama, Patagonian steppe, Pampas, Amazon rainforest, Cerrado, high Andes puna) with data cards showing altitude, annual rainfall, and temperature range. Students rotate and write one geographic factor at each station that explains why that biome exists in its location. The class then assembles a cause-and-effect map showing how the Andes and Atlantic moisture together explain the continent's biome pattern.

Prepare & details

Analyze the unique biodiversity of the Amazon Basin and its global importance.

Facilitation Tip: For the Gallery Walk, assign each biome poster to a small group and require them to prepare a 60-second explanation of its key characteristics.

Setup: Wall space or tables arranged around room perimeter

Materials: Large paper/poster boards, Markers, Sticky notes for feedback

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

Jigsaw

⏱ 40 min·Small Groups

Jigsaw: Amazon Biodiversity Layers

Expert groups each study one aspect of Amazon biodiversity: canopy layer species, river and fish diversity, insect and invertebrate species, and endemic mammals. Groups reform into mixed groups and teach each other, using a blank vertical cross-section of the forest that they label together to show how physical geography creates the conditions for each layer's distinct species communities.

Prepare & details

Compare the physical geography of the Atacama Desert with the Pampas grasslands.

Facilitation Tip: In the Jigsaw activity, structure expert groups to focus on one Amazon layer and then mix teams so every student teaches their layer to peers.

Setup: Flexible seating for regrouping

Materials: Expert group reading packets, Note-taking template, Summary graphic organizer

• Understand
• Analyze
• Evaluate
• Relationship Skills
• Self-Management

Teaching This Topic

Start by grounding students in the physical reality of South America using elevation models and climate data. Avoid overwhelming them with too many regions at once. Research shows that focusing on one mountain range or biome at a time builds deeper understanding. Use guided questions to push students beyond surface-level observations, such as asking them to predict how a change in wind direction would alter a biome’s boundaries.

What to Expect

Successful learning looks like students accurately describing how the Andes shape regional climates, identifying distinct South American biomes, and explaining the layered biodiversity of the Amazon. They should use precise vocabulary and reference data to support their claims.

Watch Out for These Misconceptions

Common Misconception

During the Cross-Section Analysis activity, watch for students assuming the Andes create only cold climates throughout.

What to Teach Instead

During the Cross-Section Analysis activity, use the temperature and precipitation data plots to guide students to notice warm valleys like Cuzco and fog-desert conditions on the western slopes.

Common Misconception

During the Gallery Walk: South American Biomes activity, watch for students describing the Amazon as a single uniform habitat.

What to Teach Instead

During the Gallery Walk activity, have students compare the Amazon’s flooded forests, white-sand forests, and savanna transitions by examining labeled images and soil data at each station.

Common Misconception

During the Jigsaw: Amazon Biodiversity Layers activity, watch for students believing the Atacama Desert is the world’s largest desert.

What to Teach Instead

During the Jigsaw activity, include a station with a world desert size comparison chart to clarify the Atacama’s rank and focus on its unique dryness rather than its area.

Assessment Ideas

Exit Ticket

After the Cross-Section Analysis activity, provide students with a blank map of South America and ask them to label the Andes Mountains, Amazon Basin, Atacama Desert, and Pampas. Then, have them draw arrows for prevailing winds and explain the rain shadow effect on one side of the Andes.

Quick Check

During the Gallery Walk activity, have students complete a short worksheet where they match three environment descriptions to the correct biome region and justify their choices with one key characteristic from the posters.

Discussion Prompt

After the Jigsaw: Amazon Biodiversity Layers activity, pose the question: 'How do the physical geography features of the Andes and Amazon create both challenges and opportunities for people living in those regions?' Facilitate a class discussion where students use key vocabulary and cite specific examples from their jigsaw research.

Extensions & Scaffolding

• Challenge early finishers to create a 3D model of the Andes transect using cardboard or digital tools to demonstrate climate zones.
• For students who struggle, provide a partially completed climate graph with key trends highlighted to reduce cognitive load.
• Deeper exploration: Have students research how indigenous communities adapt to specific South American environments and present their findings in a mini-documentary format.

Key Vocabulary

Andes Mountains	A major mountain range running along the western coast of South America, influencing climate and creating diverse ecosystems.
Amazon Basin	A vast, low-lying region in South America dominated by the Amazon River and its rainforest, known for its exceptional biodiversity.
Atacama Desert	A hyper-arid desert plateau on the western edge of South America, known for its extreme dryness and unique adaptations of life.
Pampas	Expansive, fertile grasslands in southeastern South America, primarily in Argentina and Uruguay, crucial for agriculture.
Rain Shadow Effect	A phenomenon where one side of a mountain range receives much less precipitation than the other side due to air masses being forced upward and releasing moisture.