Geography · 10th Grade · Global Interdependence and the Future · Weeks 46-54

Maps as Tools for Advocacy

Reflecting on the role of geographers in promoting social and environmental justice.

• Common Core State Standards
• C3: D4.7.9-12
• C3: D2.Geo.2.9-12

About This Topic

Maps have never been purely neutral documents. Throughout history, maps have been used to claim territory, exclude populations, justify displacement, and concentrate political power in the hands of those who controlled cartographic knowledge. For US 10th grade geography students, this topic brings that critical tradition into the present, examining how contemporary geographers, activists, and data journalists use mapping to make visible what official maps obscure , food deserts, pollution hotspots, discriminatory lending patterns, and the geographic concentration of environmental hazards.

The rise of participatory GIS, community mapping, and open-source spatial data tools has democratized the power to produce maps. Communities that once appeared only as objects of other people's maps can now create their own spatial narratives. Students examine real examples from the US context , including redlining maps and their lasting demographic effects , as well as international cases where indigenous communities have used mapping to assert land rights and resist extractive industry encroachment.

This topic pairs naturally with active learning because it is inherently project-based. Students develop genuine geographic skills , data selection, visual argument design, spatial analysis , while engaging with equity questions that connect the classroom to their own communities.

Key Questions

1. Explain how maps can be used to advocate for marginalized communities.
2. Analyze the ethical responsibilities of geographers in data representation.
3. Design a map-based advocacy campaign for a local social justice issue.

Learning Objectives

• Analyze how specific mapping tools, like GIS or community-generated maps, can amplify the voices of marginalized groups.
• Evaluate the ethical implications of data visualization choices in advocacy maps, considering potential biases and misrepresentations.
• Design a spatially-informed advocacy campaign proposal for a local social justice issue, including target audience and proposed map products.
• Critique existing maps of local areas to identify how they may obscure or misrepresent the experiences of certain communities.

Before You Start

Introduction to Geographic Information Systems (GIS)

Why: Students need foundational knowledge of what GIS is and its basic functions before analyzing its use in advocacy.

Data Analysis and Interpretation

Why: Understanding how to read charts, graphs, and statistical information is essential for interpreting map data and its implications.

Principles of Social Justice

Why: Students should have a basic understanding of social justice concepts to connect geographic tools with equity issues.

Key Vocabulary

Participatory GIS (PGIS)	A geographic information system approach that actively involves community members in the mapping process, valuing local knowledge alongside technical expertise.
Spatial Justice	The fair distribution of geographic resources and opportunities, and the equitable treatment of all people regardless of their location or identity.
Data Gentrification	The process by which data, often collected by outsiders, is used to justify development or policies that displace existing communities or alter their character.
Environmental Racism	The disproportionate exposure of certain racial or ethnic groups to environmental hazards and pollution, often linked to historical and ongoing discriminatory practices.
Redlining	A discriminatory practice where services, like loans or insurance, are denied to residents of certain geographic areas, often based on race or ethnicity, leading to persistent inequality.

Watch Out for These Misconceptions

Common Misconception

Maps are objective because they display data visually rather than making written arguments.

What to Teach Instead

Every map reflects choices about what to include, what to exclude, how to color categories, and where to draw boundaries. These choices encode the priorities and assumptions of the mapmaker. Developing map literacy means learning to interrogate these choices rather than accepting visual authority at face value , a skill that active map design exercises build directly.

Common Misconception

Community-produced maps are less reliable than government or academic maps.

What to Teach Instead

Community-produced maps often capture hyper-local knowledge that official datasets miss , informal settlements, contested boundaries, locally significant resources, and patterns of daily life. Participatory mapping has been validated as a critical tool in urban planning, environmental justice litigation, and indigenous land rights recognition.

Common Misconception

Advocacy maps are biased while 'scientific' maps are neutral.

What to Teach Instead

All maps involve advocacy in the sense that they argue for one spatial representation over others. What distinguishes ethical advocacy cartography is transparency about data sources, methods, and purpose , not the absence of a viewpoint. Students who make explicit mapping decisions in design challenges develop more sophisticated understanding of this than those who only analyze finished maps.

Active Learning Ideas

Analysis Activity: Unpacking a Redlining Map

Students examine historical HOLC redlining maps of a US city alongside current demographic, income, and health data for the same neighborhoods. In pairs, they identify specific spatial correlations and discuss the long-term geographic consequences of discriminatory cartography on present-day community patterns.

45 min·Pairs

Design Challenge: Map an Injustice

Small groups select a local or national social justice issue , environmental pollution, transit access gaps, food deserts, or unequal park distribution , and design a map-based advocacy campaign. They decide what data to show, what to omit, how to title the map, and who their audience is, then present their design choices to the class.

60 min·Small Groups

Gallery Walk: Maps That Changed Things

Historical and contemporary advocacy maps are displayed around the room: John Snow's cholera map, NAACP lynching maps, Indigenous land claim maps, and climate justice maps. Students annotate each station with what injustice the map reveals, who made it, and what documented effect it had on policy or public understanding.

35 min·Pairs

Fishbowl Discussion: Geographers' Ethical Responsibilities

An inner circle of four to six students debates the ethical obligations geographers have when their data could harm vulnerable communities. The outer circle observes and takes structured notes. Circles rotate halfway through so all students engage in both active debate and reflective listening.

40 min·Whole Class

Real-World Connections

• Community organizers in Flint, Michigan, used mapping to document the geographic spread of lead contamination in water pipes and advocate for equitable access to clean water, highlighting disparities in infrastructure investment.
• The organization 'Mapping for Change' works with communities in the UK to create maps that identify local environmental concerns, such as air quality hotspots or lack of green space, and present these findings to local government for policy change.
• Urban planners and housing advocates use historical redlining maps alongside current demographic and economic data to demonstrate the lasting impacts of discriminatory housing policies on neighborhood development and wealth accumulation in cities like Chicago and Los Angeles.

Assessment Ideas

Discussion Prompt

Present students with two maps of the same neighborhood: one from a city planning department and another created by a local community group. Ask: 'How do these maps differ in what they emphasize or omit? What specific advocacy goals might each map serve? Which map do you find more persuasive for advocating for residents' needs, and why?'

Quick Check

Provide students with a short case study of a social justice issue (e.g., food deserts, lack of public transportation in a specific area). Ask them to list three types of spatial data they would need to map this issue effectively and explain why each data type is crucial for advocacy.

Peer Assessment

Students draft a brief proposal for a local advocacy map. They exchange proposals and assess them using a checklist: Does the proposal clearly identify a local social justice issue? Does it specify the target audience for the map? Does it suggest at least one specific mapping technique or data source and justify its use? Peers provide one written suggestion for improvement.

Frequently Asked Questions

How can maps be used to advocate for marginalized communities?

Maps make spatial inequalities visible in ways that statistics alone cannot. By plotting environmental hazard sites against community demographics, showing transit deserts in low-income areas, or visualizing the legacy of redlining on current wealth distribution, advocacy maps create geographic arguments that are both analytically rigorous and publicly compelling. They have been used successfully in legal cases, policy campaigns, and community organizing.

What are the ethical responsibilities of geographers in data representation?

Geographers have an obligation to be transparent about data sources, limitations, and the choices made in representing spatial patterns. When maps involve vulnerable communities, geographers must also consider whether their data could be misused , through surveillance, displacement, or discrediting community claims. Responsible cartography involves ongoing consultation with the communities being represented.

How have maps historically been used against marginalized communities?

Colonial mapping erased indigenous place names and territorial knowledge. Redlining maps from the 1930s through 1960s codified racial discrimination in housing lending, with effects still clearly visible in US demographic maps today. Gerrymandering uses mapmaking to dilute minority voting power. Understanding this history prepares students to approach all maps with appropriate critical awareness.

How does active learning support studying maps as tools for advocacy?

The design challenge activity puts students in the position of making real cartographic decisions , choosing data, framing arguments, anticipating audience reactions. This applied approach develops both technical geographic skills and ethical reasoning in ways that analyzing pre-made examples alone cannot achieve. Students learn through the act of mapping what advocacy cartography actually requires.