‹ Philadelphia, 1787 (unit home)
① Surface · Build the knowledge

Phase 1 — Build the knowledge

Before students can reason about the Convention's problem, they need the raw material: the words, the reasons a convention was called, and the geography of the 13 states. These three activities are fast and front-loaded — the goal is acquisition, not yet analysis.

🎯 By the end of Phase 1 students can use the key vocabulary, explain why the Articles of Confederation failed, describe the Virginia and New Jersey Plans, and read a map/table of the 13 states to see why representation was contested.
Vocabulary & feedback · d 0.62§113.20(c)(3)

1 · Word bank & vocabulary sort

Introduce and let students sort the unit vocabulary. Sort twice: first by “words about a government's structure” vs. “words about people deciding,” then by student-invented categories (feedback on their reasoning).

WordStudent-friendly meaning
Articles of Confederationthe nation's first plan of government (1781) — a loose league of states with a weak central government
constitutiona written plan that sets up a government and the rules it must follow
ratifyto formally approve or accept (states had to ratify the Constitution)
representationhow a state's people get a voice in government — by population, or one state one vote?
federalismpower shared between a national government and the state governments
checks & balanceseach branch of government can limit the others so none grows too strong
separation of powerssplitting government into branches (legislative, executive, judicial) with different jobs
compromisean agreement where each side gives up something to reach a deal both can accept
republica government where citizens elect representatives to make decisions for them
delegatea person sent to represent a state at the Convention
stakeholderanyone who is affected by a decision or has something at stake

📚 Background: National Constitution Center · The Constitution, full text ↗ · National Archives · Constitution transcript ↗ — put the vocabulary next to the real document.

Jigsaw method · d 0.92§113.20(c)(4), (c)(5), (c)(29)(A)

2 · Jigsaw reading — Why a convention?

Split the class into four expert groups, each studying one topic below, then re-mix into home groups where every topic is represented. Each expert teaches their group. (Jigsaw is one of the highest-leverage surface moves precisely because students must teach.)

🧩 Use the ACE Powered Jigsaw Organizer — experts capture their notes on it before teaching their home group: open the organizer ↗. New to running a jigsaw? See the teacher guides in the facilitator guide.

Sources for each expert group (free, reputable; confirm access through your district — links open in a new tab):

A · What the Articles could & couldn't do

Under the Articles of Confederation, Congress could not tax, raise a reliable army, or regulate trade between states — and the country slid toward crisis (like Shays's Rebellion).

📄 National Archives · Articles of Confederation ↗
📄 Mount Vernon · Constitutional Convention ↗

B · The Virginia Plan (big states)

Large states backed a plan for a strong national government with representation based on population — the more people, the more votes.

📄 National Archives · The Virginia Plan ↗
📄 DocsTeach · Virginia Plan document ↗

C · The New Jersey Plan (small states)

Small states feared being outvoted and backed a plan keeping one vote per state, protecting states that were equal but small.

📄 DocsTeach · New Jersey Plan document ↗
📄 U.S. Senate · The Constitutional Convention ↗

D · Slavery & representation

Delegates from states with large enslaved populations argued over whether enslaved people should be counted for representation and taxes — a dispute settled only by hard, and troubling, compromises.

📄 Bill of Rights Institute · The Constitutional Convention ↗
📄 U.S. Senate · “A Great Compromise” ↗

Check for understanding: each home group writes one sentence answering “Give one reason the Articles failed and one reason the states disagreed about representation.”

Direct instruction · d 0.56§113.20(c)(4), (c)(29)(D)

3 · Map & data read — the 13 states by size and population

Give students a map of the 13 states plus a short population table (1790 census is the closest reliable count). Have them shade the states by population and answer: which states had the most people? the fewest? Then connect the data to the dispute: a large state like Virginia wanted votes by population; a small state like Delaware wanted one vote per state. Introduce large-state vs. small-state interests as students see the numbers.

State (sample)Relative size in 1787Which plan would it favor?
Virginiamost populousVirginia Plan (votes by population)
Pennsylvania · MassachusettslargeVirginia Plan
Delaware · New JerseysmallNew Jersey Plan (one vote per state)

Quick write: “A ______ state like ______ favored the ______ Plan because ______.”

🗺️ Maps & data: Library of Congress · Convention and Ratification ↗ · National Archives · DocsTeach: The Constitution ↗

Surface check before moving on: can every student use the words ratify, representation, federalism, and compromise correctly, explain why the Articles failed, and name the difference between the Virginia and New Jersey Plans? If yes, go deep. If not, reteach — the problem in Phase 3 depends on it.

Aligned to (not reproduced from) 19 TAC Ch.113 §113.20; effect sizes from Visible Learning MetaX. This scenario dramatizes the real debates of the 1787 Constitutional Convention.

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