High School · US History Since 1877 · §113.41 · Problem-Based Learning
The Panama Canal, 1903 — a World-Power Question
A Problem-Based Learning unit. Students step into the crisis of 1903, take on a stakeholder's point of view, and work a real, ill-structured question about power, sovereignty, and progress — building from surface to deep to transfer learning. The teacher is a guide, not the answer key.
Driving question: It is 1903. Should the United States build and control a canal across the Isthmus of Panama — and if so, how, and on whose terms?
The three-phase path (do them in order)
Problem-solving is a transfer move — it only works once students have knowledge to reason with. So the problem in Phase 3 is deliberately gated behind Phases 1 and 2.
⛔ Gate: don't open the Phase 3 problem until students have finished the surface and deep activities. Meeting the problem too early turns inquiry into guessing.
Big idea & objectives
Big idea: Nations weigh strategic interest, cost, and the rights of others when they decide whether and how to project power — and the choices the United States made in 1903 launched it as a world power while leaving a contested legacy of intervention and sovereignty.
Know: why a canal mattered for trade and naval power, how the Panama route was chosen, and what the 1903 secession and treaty actually did.
Understand: the same event looks profoundly different from each stakeholder's point of view — expansionist, Colombian, Panamanian, and laborer alike.
Do: run the problem-solving and decision-making process end to end — identify the problem, gather information, list and weigh options, choose and defend a solution, and evaluate it (§113.41(c)(31)(B)).
Standards this unit is aligned to (§113.41)
TEKS SE
Where it lives in the unit
(c)(4)(A)
Spanish-American War, U.S. expansionism, Mahan, T. Roosevelt — Surface facts, Deep sources
(c)(4)(B)
Evaluate American expansionism — Deep argument, Transfer debrief
(c)(12)
Geographic factors, incl. the Panama Canal — Surface map work, Deep concept map
(c)(28)(A–F)
Source analysis, points of view, claim + evidence — Deep & Transfer
(c)(29)
Communicate findings in written and oral form — Deep argument, Transfer brief
(c)(31)(B)
The problem-solving & decision-making process — the entire Transfer phase
Teacher prep & materials
Print the facilitator guide (teacher moves, map of possibilities, role cards, debrief prompts) and the assessment pack (rubric + individual-in-group).
Chart paper or a projected space for three shared columns: Hunches · Know · Need-to-Know (the KWHL chart).
Vetted sources for investigation (district-approved). Suggested public-access sources are listed in the facilitator guide.
No logins, no accounts — every page runs in the browser. Student writing and products live on paper or in tools your district already vets.
⚠️ Honest history: this unit teaches the 1903 secession of Panama from Colombia, the "in perpetuity" Canal Zone concession, and the human cost of construction — including the segregated "gold roll / silver roll" labor system — directly, factually, and respectfully (TEC §28.0022). It also notes the 1977 Torrijos–Carter Treaties that returned the canal to Panama by 1999.
Aligned to (not reproduced from) 19 TAC Ch.113 §113.41; effect sizes from Visible Learning MetaX. The Meet-the-Problem narrative is a teaching fiction grounded in the documented events of 1903.