Run it in one class period
- Opener, 5 minutes. Hand each group four cards face down and a placement mat. They place the cards on the side of the Atlantic each one moved to and predict one likely consequence. No looking anything up yet.
- Network build, 20 minutes. Groups take the rest of their cards and label the mechanism for each — a ship's hold, a herd turned loose, an epidemic moving faster than the people who carried it, a forced voyage. Mechanism is the thinking; direction is just the setup.
- Trade and challenge, 10 minutes. Groups swap mats and mark one consequence they think is too vague. "Diets changed" is vague. "Andean potatoes fed a growing population in northern Europe" is not.
- Debrief, 10 minutes. Deal the five conquest-factor cards and have groups rank them, then defend the ranking. Ask the asymmetry question directly: this was not an even swap. Who gained, who was destroyed, and who adapted in ways that reshaped their own power — Plains nations with horses, Diné (Navajo) herders with sheep?
- Exit, 5 minutes. One transfer, written as a because–therefore sentence. Reject any answer that names a transfer without explaining a consequence.
Teaching Lesson 1.4 from the free planner? Here is every material it names
The Teacher Run Sheet for Columbian Exchange: Networks and Unequal Consequences opens with "Gather or display: Exchange pathway cards; Atlantic network map; authored population-data display; conquest-factor cards; source-analysis frame." Three of those five are on this page. Here is the whole list so nothing sends you hunting mid-period.
| What the run sheet names | Where it is |
|---|
| Exchange pathway cards | On this page. The 24-card deck — this is what the opener means by "place four pathway cards." |
| Atlantic network map | On this page. The placement mat, one per group. |
| Conquest-factor cards | On this page. The five debrief cards students rank. |
| Source-analysis frame | In the lesson kit — the evidence organizer and reasoning builder inside the Student Activity Packet. |
| Authored population-data display | Not a separate file. Project any Indigenous-population dataset you already trust for the micro-SAQ, or use the records linked in the kit's Evidence and Source Guide. |
The four files themselves are inside the lesson: open the planner, open Lesson 1.4, scroll to Materials, then use Print or Build editable copy for a Google Doc you can change.
Two things worth saying out loud
The enslaved-Africans card is not a trade good. It is in the deck because coerced migration was the largest human movement of the Atlantic system, and leaving it out would teach the exchange as crops and cattle. Say plainly that this card names people who were captured, sold, and forced onto ships, and that it does not belong in the same category as sugar even though the same ships carried both. Students should name the coercion, not file it beside the wheat.
Disease alone does not explain conquest. Epidemics were catastrophic — most estimates place Indigenous population loss across the Americas at well over half within a century of sustained contact — but a class that stops there has learned that history happened to Indigenous people. Spanish victories also ran on alliances with peoples subject to dominant regional powers, on political fragmentation, and on deliberate imperial aims. And Indigenous nations adapted, resisted, and persisted; the Pueblo Revolt of 1680 drove Spanish forces out of New Mexico for over a decade.
What this is and where it came from
The cards are teacher-authored category cards, not primary-source excerpts. They name a thing that moved and give one factual detail; the analysis is the student's. If you want the paired primary sources, timed plan, and exit ticket that go with this activity, they are in Lesson 1.4 of the free APUSH Periods 1–2 planner — 22 lessons, also free.
All free printable card sets · Back to the APUSH Skills Lab · See the full catalog
Written and reviewed by Josh, classroom history teacher and Simulation Lab creator. Published and reviewed August 18, 2026. Print and copy freely for your own classroom. Not affiliated with or endorsed by the College Board.
