American History · 8th Grade

Active learning ideas

Lewis and Clark Expedition & Western Exploration

Active learning helps students grasp the complexity of the Lewis and Clark Expedition because it requires them to analyze primary documents, interpret maps, and engage in discussions that reveal multiple perspectives. Memorizing dates and routes won’t capture the expedition’s impact, but examining conflicting viewpoints and mapping real decisions will make the history vivid and meaningful.

• Common Core State Standards
• C3: D2.Geo.1.6-8
• C3: D2.His.14.6-8

• 20–40 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Timeline Challenge
• 40 min · Pairs

Primary Source Analysis: Two Perspectives on the Expedition

Provide students with a journal entry from Lewis or Clark alongside a brief passage from a contemporary Native American account of first contact. Students use a structured annotation guide to identify what each source emphasizes, omits, and assumes. Pairs compare notes and draft a paragraph explaining why the same event looks different depending on the source.

Explain the primary objectives of the Lewis and Clark expedition.

Facilitation Tip

For Mapping Activity, provide tracing paper over printed maps so students can layer routes without damaging original documents.

What to look for

Students will receive a card with one of the expedition's primary objectives (e.g., 'Map the territory,' 'Find a route to the Pacific'). They will write two sentences explaining why this objective was important to President Jefferson and one specific challenge the Corps faced in achieving it.

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

Activity 02

• Gallery Walk
• 35 min · Small Groups

Gallery Walk: Expedition Discoveries

Post stations around the room: one for maps and geography, one for plant/animal specimens, one for Sacagawea's contributions, one for diplomatic encounters with Native nations, and one for the expedition's long-term legacy. Students rotate with sticky notes , adding what they know, what surprises them, and what questions they have. Debrief as a whole class.

Analyze the role of Sacagawea in the success of the expedition.

What to look for

Pose the question: 'How might the expedition have been different if Sacagawea had not been part of the Corps of Discovery?' Students should share specific examples from her role to support their arguments, discussing her linguistic skills, knowledge of the land, and diplomatic influence.

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

Activity 03

• Think-Pair-Share
• 20 min · Pairs

Think-Pair-Share: Was the Expedition a Success?

Students independently write a quick response: success or failure, and for whom? They must name at least one group for whom the expedition's outcomes were mixed or harmful. Pairs compare, then share. Use responses to surface the idea that 'success' depends on perspective and which goals you prioritize.

Evaluate the impact of the expedition on scientific knowledge and westward expansion.

What to look for

Present students with a short excerpt from a Lewis and Clark journal and a brief description of a Native American perspective on the expedition. Ask them to identify one piece of evidence from each source that highlights a difference in their experiences or understanding of the Corps' presence.

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

Activity 04

• Timeline Challenge
• 30 min · Small Groups

Mapping Activity: Tracing the Corps of Discovery

Students trace the expedition's route on a blank map of the Louisiana Territory, marking key geographic features, winter camps, and significant encounters. Small groups then annotate the map with three 'turning points' where Sacagawea's contributions were decisive. Share maps in a brief class discussion.

Explain the primary objectives of the Lewis and Clark expedition.

What to look for

Students will receive a card with one of the expedition's primary objectives (e.g., 'Map the territory,' 'Find a route to the Pacific'). They will write two sentences explaining why this objective was important to President Jefferson and one specific challenge the Corps faced in achieving it.

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

A few notes on teaching this unit

Teachers approach this topic by centering Native perspectives first, using the expedition’s journals as evidence of presence rather than authority. Avoid framing the journey as a heroic discovery of empty land. Instead, use activities that force students to weigh Jefferson’s goals against the daily realities of the Corps and the nations they encountered. Research shows that when students analyze primary sources critically, they better understand how power and perspective shape historical narratives.

In these activities, success looks like students questioning oversimplified narratives, connecting primary sources to larger historical themes, and articulating how the expedition’s goals both aligned with and conflicted with the realities Native nations faced. They should be able to explain why Sacagawea’s role mattered beyond being a ‘guide’ and why the expedition’s ‘success’ depended on whose perspective you used.

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Watch Out for These Misconceptions

• During Primary Source Analysis: Two Perspectives on the Expedition, students may assume Sacagawea’s primary role was guiding the expedition through unfamiliar territory.

  Use the primary sources to guide students to identify Sacagawea’s documented roles as interpreter, diplomat, and cultural mediator. Have them tally specific examples from her interactions with the Corps and Native nations to correct the oversimplification.

• During Gallery Walk: Expedition Discoveries, students might conclude the expedition was purely a scientific and exploratory success with no negative consequences.

  Direct students to the gallery’s section on Native accounts and ecological changes, asking them to note evidence of displacement or environmental impact. Use these observations to reframe the expedition’s legacy during whole-group discussion.

• During Mapping Activity: Tracing the Corps of Discovery, students may assume the Louisiana Territory was empty land waiting to be mapped and settled.

  Provide pre-activity context: assign each student or group a Native nation’s territory to map before tracing the Corps’ route. Have them compare the two maps to highlight the presence of established communities.

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Methods used in this brief

• Timeline Challenge
• Gallery Walk
• Think-Pair-Share