Geography · 7th Grade

Active learning ideas

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.

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

• 30–40 min
• Pairs → Whole Class
• 3 activities

Activity 01

• 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.

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.

What to look for

Provide students with a blank map of South America. Ask them to label the Andes Mountains, Amazon Basin, Atacama Desert, and Pampas. Then, have them draw arrows indicating prevailing winds and briefly explain the rain shadow effect on one side of the Andes.

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

Activity 02

• 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.

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.

What to look for

Present students with three short descriptions of different South American environments. For each description, students must identify the corresponding physical region (e.g., Andes, Amazon, Atacama, Pampas) and state one key characteristic that helped them decide.

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

Activity 03

• 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.

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.

What to look for

Pose the question: 'How does the physical geography of South America, specifically the Andes and the Amazon, create both challenges and opportunities for people living in those regions?' Facilitate a class discussion, encouraging students to use key vocabulary and cite specific examples.

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

A few notes on teaching this unit

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.

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.

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Watch Out for These Misconceptions

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

  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.

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

  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.

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

  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.

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Methods used in this brief

• Gallery Walk
• Jigsaw