Ethnicity, Race, and Segregation

Active learning helps students move beyond abstract definitions by engaging with real data and contested histories. Mapping, case studies, and structured debate make the geographic and social impacts of ethnicity, race, and segregation visible, concrete, and debatable for learners.

• 9th Grade
• Geography
• 4 activities
• 25 min–55 min

Learning Objectives

1. Compare the US Census Bureau's historical and current definitions of race and ethnicity with those used in at least one other country.
2. Analyze primary source documents, such as historical redlining maps, to explain the spatial patterns of segregation in a specific American city.
3. Evaluate the long-term geographic consequences of redlining on wealth accumulation and access to resources in urban neighborhoods.
4. Explain the role of ethnic enclaves in facilitating the social and economic integration of immigrant populations in the United States.

Document Mystery

⏱ 45 min·Pairs

Map Analysis: Redlining Then and Now

Students compare 1930s HOLC redline maps of a US city (Chicago, Detroit, or a city relevant to the class community) with contemporary maps of median household income, life expectancy, or tree canopy coverage for the same area. Working in pairs, they identify spatial correlations and generate claims about how historical policy continues to shape geography. Class discussion addresses causation versus correlation and the policy implications.

Prepare & details

Differentiate how the US Census definition of race differs from other countries.

Facilitation Tip: During Map Analysis: Redlining Then and Now, have students annotate maps with both historical and modern census data to track changes over time.

Setup: Groups at tables with document sets

Materials: Document packet (5-8 sources), Analysis worksheet, Theory-building template

• Analyze
• Evaluate
• Self-Management
• Decision-Making

Inquiry Circle

⏱ 55 min·Small Groups

Inquiry Circle: Ethnic Enclaves in the US

Small groups each research one ethnic enclave (Miami's Little Havana, San Francisco's Chinatown, Minneapolis's Somali community, New York's Jackson Heights) and answer: When did this community form? What conditions created it? What economic and social functions does it serve? Has it faced displacement pressure? Groups present findings and the class identifies patterns across different enclave histories.

Prepare & details

Analyze the lasting geographic impacts of redlining in American cities.

Facilitation Tip: In Collaborative Investigation: Ethnic Enclaves in the US, assign each group a different city to compare immigration patterns and housing policies.

Setup: Groups at tables with access to source materials

Materials: Source material collection, Inquiry cycle worksheet, Question generation protocol, Findings presentation template

• Analyze
• Evaluate
• Create
• Self-Management
• Self-Awareness

Think-Pair-Share

⏱ 25 min·Pairs

Think-Pair-Share: Race vs. Ethnicity

Students read the current US Census Bureau definitions of race and ethnicity, then work individually to answer: Why does the Census ask these as two separate questions? What are the limitations of these categories? Partners compare responses and the class discusses what political and historical forces shaped these definitions and how they have changed over time.

Prepare & details

Explain how ethnic enclaves provide support for new immigrants.

Facilitation Tip: Use Think-Pair-Share: Race vs. Ethnicity to clarify definitions before students analyze census categories or self-identification responses.

Setup: Standard classroom seating; students turn to a neighbor

Materials: Discussion prompt (projected or printed), Optional: recording sheet for pairs

• Understand
• Apply
• Analyze
• Self-Awareness
• Relationship Skills

Structured Academic Controversy

⏱ 50 min·Small Groups

Structured Academic Controversy: Integration Policies

Students evaluate two historical integration interventions -- school busing in Boston and mixed-income housing redevelopment in Chicago's Cabrini-Green -- through competing lenses. Did these policies reduce segregation? Who benefited? Who was harmed? Small groups argue assigned positions before switching sides and working toward a nuanced class position supported by geographic evidence.

Prepare & details

Differentiate how the US Census definition of race differs from other countries.

Facilitation Tip: During Structured Academic Controversy: Integration Policies, assign roles to ensure balanced debate and require evidence-based arguments from each side.

Setup: Pairs of desks facing each other

Materials: Position briefs (both sides), Note-taking template, Consensus statement template

• Analyze
• Evaluate
• Create
• Social Awareness
• Relationship Skills

Teaching This Topic

Start by confronting the myth that segregation is natural or inevitable. Use the redlining maps to show policy as the driver, not individual choice. Avoid framing ethnicity and race as purely cultural topics; connect them directly to land use, economic mobility, and political power. Research shows students grasp social construction best when they see categories changing across time and place, so emphasize historical shifts in Census definitions and legal classifications.

What to Expect

Students will move from recognizing concepts to analyzing their spatial and social consequences, using evidence to challenge common myths. They will connect historical policies to present-day outcomes and articulate how ethnicity and race function differently in American society.

Watch Out for These Misconceptions

Common Misconception

During Map Analysis: Redlining Then and Now, students may claim that residential segregation results from personal housing choices rather than policy.

What to Teach Instead

Use the side-by-side redlining and contemporary demographic maps to trace specific policy origins (e.g., 1930s HOLC grades, restrictive covenants) and ask students to mark how those boundaries persist in today's racial distribution.

Common Misconception

During Think-Pair-Share: Race vs. Ethnicity, students may assume race is a biological truth with fixed boundaries.

What to Teach Instead

Provide students with a timeline of U.S. Census racial categories from 1790 to 2020 and ask them to identify which groups were reclassified over time, using this as evidence that race is socially constructed rather than biological.

Common Misconception

During Collaborative Investigation: Ethnic Enclaves in the US, students may interpret enclaves as evidence of immigrant refusal to integrate.

What to Teach Instead

Have students analyze historical housing ads, deed restrictions, or zoning laws in their case study city to identify structural barriers that led to enclave formation, then discuss how these conditions shape integration choices.

Assessment Ideas

Exit Ticket

After Map Analysis: Redlining Then and Now, ask students to write one sentence defining ethnicity and one sentence defining race, then list one specific geographic consequence of redlining in a U.S. city they examined.

Discussion Prompt

After Collaborative Investigation: Ethnic Enclaves in the US, pose the question: 'How do ethnic enclaves act as both a bridge and a potential barrier for immigrants integrating into a new society?' Facilitate a class discussion where students share examples and perspectives from their case studies.

Quick Check

During Think-Pair-Share: Race vs. Ethnicity, provide students with a short excerpt from a U.S. Census Bureau report on race or ethnicity categories. Ask them to identify one way the Census definition differs from a common understanding of the term or from another country's approach.

Extensions & Scaffolding

• Challenge early finishers to create an infographic comparing redlining maps of two different cities and presenting findings to the class.
• Scaffolding for struggling students: Provide a partially completed graphic organizer with key terms and examples during Collaborative Investigation.
• Deeper exploration: Assign students to research and present on how redlining policies in one city connect to current school funding disparities.

Key Vocabulary

Ethnicity	A shared cultural identity based on common ancestry, language, religion, customs, or historical experiences, which a group recognizes and maintains.
Race	A social and political construct assigned primarily based on physical appearance, historically used for classification and discrimination.
Redlining	A discriminatory practice where services, especially financial ones, are withheld from potential customers who reside in neighborhoods classified as high-risk, often based on racial demographics.
Ethnic Enclave	A geographically concentrated area with a high concentration of residents from a particular ethnic background, offering social and economic support.
Spatial Assimilation	The process by which members of an ethnic or racial group gradually move into different residential areas over time, often influenced by economic and social factors.