Geography · 12th Grade

Active learning ideas

Electoral Geography and Gerrymandering

Active learning works for this topic because students need to physically manipulate district boundaries to see how geography and demographics interact with political power. Mapping exercises make abstract legal concepts like 'cracking' and 'packing' concrete, turning what could be a dry civics lecture into a tangible problem-solving experience that mirrors real-world redistricting decisions.

• Common Core State Standards
• C3: D2.Geo.5.9-12
• C3: D2.Civ.6.9-12

• 20–50 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Simulation Game
• 50 min · Small Groups

Simulation Game: Draw the District

Students receive a hypothetical state with demographic data and must draw four congressional districts two ways: once to favor Party A, once to meet fairness criteria. Small groups compare maps and debate which criteria matter most.

Analyze how population distribution influences electoral outcomes.

Facilitation Tip

During the Simulation: Draw the District activity, circulate with colored pencils and pre-printed population data so students can physically trace where blocs split or merge under different scenarios.

What to look for

On an index card, students will define 'cracking' and 'packing' in their own words and provide one example of how each technique could be applied to a hypothetical state map. They should also state one potential consequence of these practices.

• Apply
• Analyze
• Evaluate
• Create
• Social Awareness
• Decision-Making

Activity 02

• Jigsaw
• 40 min · Small Groups

Jigsaw: Landmark Redistricting Cases

Groups each receive one major US redistricting case , Gill v. Whitford, LULAC v. Perry, or Rucho v. Common Cause , and prepare a brief on the geographic and legal issues at stake. Groups then share findings in a structured round-robin.

Explain the process and political implications of gerrymandering.

Facilitation Tip

In the Case Study Jigsaw, assign clear roles (e.g., historian, lawyer, geographer) so each student contributes a distinct lens to the group’s analysis of landmark cases.

What to look for

Facilitate a class debate using the prompt: 'Should the drawing of electoral districts be primarily based on partisan advantage, racial equity, geographic compactness, or community coherence?' Students should support their arguments with evidence from case studies and geographic principles discussed in class.

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

Activity 03

• Problem-Based Learning
• 30 min · Pairs

Data Analysis: The Efficiency Gap

Students use simple vote-share data from two hypothetical districts to calculate the efficiency gap metric, then debate whether a mathematical formula can capture electoral fairness. They compare results across several sample maps.

Critique different methods for drawing electoral districts to ensure fair representation.

Facilitation Tip

For the Data Analysis: The Efficiency Gap activity, project the spreadsheet formula on the board and walk through one calculation step-by-step so students see how the metric quantifies partisan bias.

What to look for

Present students with two sample district maps for the same area. Ask them to identify which map is more likely gerrymandered and explain their reasoning by pointing to specific geographic features or population distributions that suggest manipulation.

• Analyze
• Evaluate
• Create
• Decision-Making
• Self-Management
• Relationship Skills

Activity 04

• Think-Pair-Share
• 20 min · Pairs

Think-Pair-Share: Independent Redistricting Commissions

Students read a short overview of California's Citizens Redistricting Commission and Iowa's legislative redistricting model. Pairs discuss whether independent commissions produce fairer maps than legislatures drawing their own lines.

Analyze how population distribution influences electoral outcomes.

Facilitation Tip

During the Think-Pair-Share on Independent Redistricting Commissions, provide a two-column graphic organizer with pros and cons to scaffold students’ arguments before the full-class discussion.

What to look for

On an index card, students will define 'cracking' and 'packing' in their own words and provide one example of how each technique could be applied to a hypothetical state map. They should also state one potential consequence of these practices.

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

A few notes on teaching this unit

Teachers should treat this topic as a balance between civic engagement and analytical rigor. Avoid presenting gerrymandering as purely partisan; instead, frame it as a structural problem where geography, law, and politics collide. Use the Supreme Court’s shifting standards (from Baker v. Carr to Rucho) to show students how judicial decisions shape what mapmakers can legally do, emphasizing that fairness is contested, not self-evident.

Students will demonstrate their understanding by accurately applying gerrymandering techniques to maps, citing legal precedents in case discussions, and articulating trade-offs between fairness criteria like compactness and partisan advantage. Success looks like students fluently debating redistricting criteria using both geographic data and legal reasoning.

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Watch Out for These Misconceptions

• During the Case Study Jigsaw activity, watch for students assuming all gerrymandering is illegal.

  Use the jigsaw’s case packets to highlight Rucho v. Common Cause (2019), which upheld partisan gerrymandering as legal but struck down racial gerrymandering in cases like Shaw v. Reno; have students annotate the cases with the specific legal standards that distinguish the two.

• During the Simulation: Draw the District activity, watch for students equating compact shapes with fairness.

  Have students compare two compact maps: one that splits a minority community across three districts (cracking) and another that concentrates them into one district (packing), then ask them to calculate the Efficiency Gap for each to see how shape alone doesn’t guarantee equity.

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Methods used in this brief

• Simulation Game
• Jigsaw
• Problem-Based Learning
• Think-Pair-Share