Critical Thinking Skills Developer

The Engine of Change: Analytical Reasoning Unit on the British Industrial Revolution (1760–1850)

Planning Assumptions

• Course: The course is listed as "AP U.S./World History." Britain's Industrial Revolution is core content in AP World History, Unit 5, so I've framed the unit there. I've built in explicit U.S. links (cotton, slavery, and the American South) so it also works as a bridge unit in APUSH.
• Sample materials: All documents, datasets, and historian excerpts are original and illustrative. Fictional names are marked with an asterisk (*). The four historical interpretations in Activity 4 are modeled loosely on real scholarly schools of thought, noted in the teacher key, but the passages are invented. Tell students this explicitly. It becomes a teaching point about source construction.
• Materials: Copies, chart paper, markers, and index cards. No devices required.
• Written analysis: Assigned on Day 3 and due at the end of the week (Friday) or the following class.
• Groups: Six stable groups of four for the whole week. Rotating roles are assigned in Activity 1.

Weekly Map

Rotating group roles (assign on Day 1 and rotate each day):

• Facilitator: keeps time and makes sure every voice is heard.
• Skeptic: must ask "How do we know?" at least three times.
• Recorder: captures the group product.
• Reporter: speaks for the group in whole-class segments.

Activity 1: The Hidden Premises

Title and Goal

• Skill: Assumption identification
• Learning outcome: Students distinguish a source's stated claims from its unstated assumptions. They test each assumption against a counter-scenario and explain how the argument collapses or survives when an assumption is removed.
• Time: 20 minutes (Day 1)

Questioning Strategy

Open-ended

• What does this author need you to already believe for the argument to work?
• Whose experience is at the center of this argument? Whose is missing?

Socratic (probing and clarifying)

• When the author says "the facts plainly," which facts did he choose? What did he leave out?
• You said the author assumes workers are "free." What does "free" mean here? Free compared to what?
• Is that an assumption, or is it a claim he actually states? How can you tell the difference?

What-if

• What if the only other employer in the valley was another mill with the same hours? Does "free to leave" still hold?
• What if the pre-mill cottage weaver was actually earning more in 1790 than the mill worker earns in 1832? Which parts of the argument fall?

Evidence-based

• Point to the exact phrase where the assumption hides.
• What evidence would you need to confirm or refute this assumption?

Core Exercise

Assumption hunting. Students build an "Assumption Ledger" from an invented 1830s-style pamphlet defending the factory system.

Sample Material

Illustrative source (fictional): From A Letter to the Gentlemen of Parliament on the Factory Question, by Josiah Pembrey*, cotton manufacturer, 1833*. Written in the style of real 1830s pamphlets.

"Gentlemen, the clamour against our manufactories arises from men who have never set foot within one. Consider the facts plainly. Before the mill came to our valley, the hand-loom weaver laboured by candlelight in a cold cottage, his children at the spindle beside him, and his wage rose or fell with every merchant's whim. Now those same children earn a regular wage under a roof that is warm and dry, and the family may purchase cloth, tea, and sugar that their grandfathers never tasted.

The mill owner who risks his capital deserves the fruit of it. Were Parliament to shorten the hours of labour, the last hour, in which all the profit is made, would vanish, and with it the mill, and with the mill, the wages of a thousand families. The workman is free to leave if he dislikes his terms.

Britain did not become the workshop of the world through sentiment but through industry, and every nation that wishes to follow us must accept that progress has its price."

Teacher key: assumptions students should find. Aim for 6 or more across the class.

1. People who have not visited a mill cannot judge it. This is an ad hominem that shifts attention away from evidence.
2. Pre-mill life was uniformly worse. The author generalizes from one image.
3. Child labor is a neutral baseline, since children "already" worked. This ignores differences in intensity, discipline, and danger.
4. Access to consumer goods (tea, sugar, cloth) equals improved well-being.
5. A regular wage outweighs longer hours, danger, and loss of autonomy.
6. All profit is made in the final hour. This echoes a real 1837 argument by economist Nassau Senior that critics attacked. Mention it only after students find the assumption.
7. Workers have meaningful alternatives, so "free to leave" is a real choice.
8. Taking risk morally justifies how the returns are distributed.
9. Britain's success came from "industry" alone. This ignores coal, empire, and enslaved labor producing raw cotton.
10. Industrialization is a single, inevitable path that "every nation" must follow.

Step-by-Step Instructions

1. Hook (2 min). Write on the board: "Progress has its price."

• Teacher says: "Every argument has a foundation you can't see, like the part of a building underground. Today you're going to dig. Who pays the price in this sentence? Who decides it's worth paying?"
• Take two or three quick responses. Don't resolve anything yet.

2. Model (3 min). Read the first sentence aloud. Think aloud:

• "He's claiming critics have never visited a mill. But underneath, he's assuming that you can only judge a system if you've been inside it. Is that true? Can you judge a policy on hospitals without being a doctor?"
• Write this on the board as the first row of the Ledger.

3. Group hunt (8 min). Groups fill out the Assumption Ledger:

• Target: at least 4 rows per group.
• The Skeptic must challenge at least one row: "Is that really unstated, or is he actually saying it?"

4. Rank (2 min). Each group stars the load-bearing assumption: the one whose removal does the most damage to the argument.

5. Whole-class Socratic segment (4 min). Reporters share their starred assumption. Push with these questions:

• "If two groups picked different load-bearing assumptions, can both be right?"
• "Would a reform-minded writer in 1833 also have hidden assumptions? Name one." This primes students for Day 2.

6. Reflection (1 min, carried into Activity 2). Students write one sentence on an index card answering reflection prompt 1 below.

Student product: A completed Assumption Ledger (group) and a reflection card (individual).

Metacognitive Reflection

1. Which assumption was hardest to see? Why was it invisible to you at first? What does that suggest about your own starting beliefs?
2. You found assumptions in a pro-factory argument. Write one assumption you hold about "progress" or technology today that someone in 2126 might challenge.
3. Transfer: Name a modern debate where "people who've never done the job can't judge it" is used to dismiss critics. Examples include gig work, AI, and school policy.

Assessment Rubric: Activity 1

Activity 2: The Causal Web

Title and Goal

• Skill: Cause-and-effect analysis

• Learning outcome: Students build a causal map that distinguishes:

  • long-term vs. proximate causes
  • necessary vs. sufficient conditions
  • feedback loops
  • correlation vs. causation

  They then defend a claim about which cause was the "keystone."

• Time: 30 minutes (Day 1)

Questioning Strategy

Open-ended

• What had to be true before the first steam engine could matter?
• Which effects later became causes of something else?

Socratic

• You drew an arrow from "population growth" to "factories." Walk me along that arrow. What happens at each step?
• Is that cause necessary? Could industrialization have happened without it? Is it sufficient? Would it alone have been enough?
• Your map shows everything causing everything. What would you cut if you could keep only five arrows?

What-if (counterfactual)

• What if Britain's coal had been 200 miles from any navigable water?
• What if Britain had no access to American cotton after 1800?
• What if wages in Britain had been as low as wages in the Indian textile regions?

Evidence-based

• In the Hallowford data, what happens to coal prices when the canal opens? What does and doesn't that prove?
• Infant mortality rises alongside steam engines. Does that mean steam engines killed infants? What else could explain it?

Core Exercise

Cause-and-effect mapping using cause/effect cards and an invented local dataset.

Sample Material

Part A: Cause and Effect Cards (cut into 16 cards per group)

Part B: Illustrative Dataset (fictional town of Hallowford, 1770–1840)*

Invented for classroom analysis. Not real historical data.

Built-in analytical traps (teacher only):

• Population was already rising before steam engines appeared. Population growth isn't simply an effect of industry.
• Coal prices halve right after the canal opens. This suggests transport, not just geology, mattered.
• Wages are flat from 1800 to 1820 while engines multiply. Industrialization did not automatically raise wages.
• Infant mortality rises and then falls. This correlates with crowding, which does not prove technology caused it.
• The data covers one town and adult males only. What is missing?

Step-by-Step Instructions

1. Frame (3 min). Teacher says:

• "Historians don't ask 'What caused the Industrial Revolution?' They ask 'What caused it here, then, and not elsewhere or earlier?' Keep that sharper question in mind."
• Write on the board: Why Britain? Why 1760–1850?

2. Map building (12 min). Groups arrange cards on chart paper and draw arrows. Rules:

• Every arrow gets a label: one short phrase explaining the mechanism, such as "cheap fuel → steam cheaper than horses."
• Use three arrow types:
  • Solid = strong or direct
  • Dashed = contributing or indirect
  • Circular = feedback loop
• Mark causes as L (long-term, pre-1760) or P (proximate).
• Identify at least one feedback loop. Example: coal → steam engines pump flooded mines → more coal.
• Place at least two effects so they also act as causes. Example: E3 → C3.

3. Data check (7 min). Groups consult the Hallowford table and must:

• Find one pattern that supports an arrow on their map.
• Find one pattern that complicates or contradicts an arrow, then revise the map in a different color.
• Write one sentence beginning "This data cannot tell us…"

4. Keystone claim (3 min). Each group writes one claim on an index card:

"The keystone cause was ___ because without it ___, even though ___."

The "even though" clause is mandatory. It forces students to acknowledge a counterargument.

5. Whole-class Socratic segment (5 min). Put two groups with different keystones in dialogue.

• "Group 2, what would Group 5 say is wrong with your keystone?"
• "Did anyone put cotton and slavery at the center? Did anyone leave them off the map entirely? Why might a map of 'British' causes overlook them?"
• Close with: "Tomorrow we'll look at the people who lived inside this map, and ask whether we can trust what they told us."

Student products: Annotated causal map (group), keystone claim card (group), and reflection (individual, written as an exit ticket or for homework).

Metacognitive Reflection

1. Which arrow did your group argue about most? What evidence would have settled the argument?
2. Where did you catch yourself assuming that "happened after" meant "caused by"? How will you check for that next time?
3. Transfer: Pick a present-day change, such as smartphone adoption or the growth of remote work. Name one necessary condition that wasn't sufficient on its own.

Assessment Rubric: Activity 2

Activity 3: Whose Factory? Weighing Witnesses

Title and Goal

• Skill: Source-credibility and bias evaluation

• Learning outcome: Students evaluate sources by:

  • historical situation
  • intended audience
  • purpose
  • point of view (HIPP)
  • proximity to events
  • corroboration

  Students also learn a central principle: a biased source can still be reliable evidence for certain questions. The question is always "credible for what?"

• Time: 50 minutes (Day 2)

Questioning Strategy

Open-ended

• What question is this document good evidence for? What question is it poor evidence for?
• Whose voice is missing from all five documents?

Socratic

• You called Document A "biased, so useless." Is it useless for learning what mill owners argued to Parliament?
• Hannah Birch wrote 45 years later. Does distance make her memory less reliable, or does it free her to speak? Could it be both?
• The inspector is a government official. Does "official" mean "neutral"? Who appointed him, and what might they want?

What-if

• What if Document C had been published by a mill owners' association instead of a temperance society? Would you read it differently?
• What if the Northern Beacon's circulation depended on outraging its readers?

Evidence-based

• Where do two documents agree even though their authors had opposite interests? Why is that agreement especially strong evidence?
• Document E measures three skilled trades. What population does it actually describe?

Core Exercise

Source-credibility and bias evaluation using a jigsaw, followed by group corroboration.

Sample Material: The Factory Question Document Set

All documents are invented and styled after real source types of the period. None are real quotations.

Document A: Testimony of Thomas Greaves*, cotton mill owner, before a parliamentary committee on factory labour, 1832*

"The children in my mill are not ill-used. The work of the piecer is light; she needs only to join broken threads. I employ no child under nine. Our hours are twelve, with an hour and a half for meals, and I believe any child may bear this without injury. The overseers are forbidden to strike them, and I dismiss any who do. Were the hours reduced, I could not compete with mills abroad."

Document B: Report of Mr. Edwin Lathe*, Sub-Inspector of Factories, to the Home Office, 1838*

"Of the forty-one mills visited in my district, twenty-nine keep proper registers of children's ages. In the remaining twelve, surgeons' certificates appeared to have been granted without examination, and I found several children I judged to be under nine. Mills gave advance notice of my visits in most cases, as the owners' association received word of my route. Where I arrived unannounced, I twice found children at work past the legal hour."

Document C: From Early Days at the Mill, memoir of Hannah Birch*, published 1879 by a temperance society*

"I went to the mill at eight years old. We began at half past five and I was so weary by evening that my brother carried me home. The overlooker kept a strap, and though the master said it was not to be used, it was used. Many of the men took to drink, for there was no comfort else. It was the chapel and the pledge that saved our family."

Document D: Editorial, The Northern Beacon*, a radical weekly newspaper, 1836*

"The factory lords speak of 'light work' while the children of the poor are ground to dust for the price of a loaf. Every mill is a prison, every overlooker a jailer. Let Parliament grant the Ten Hours Bill, or let it confess that it sits for the masters alone."

Document E: Table from a 1965 economic history textbook reconstructing real wages*

Author's note: Series based on wage records for carpenters, bricklayers, and engine-fitters in three northern towns; price index based on London wholesale prices.

Teacher key: the hidden credibility issues.

Corroboration jewel: A says beating is forbidden. C says the strap "was used" despite the master's rule. B shows owners evading rules. The evidence converges on a gap between formal rules and practice, which is stronger than any single source.

Step-by-Step Instructions

1. Opener (4 min). Teacher says:

• "Yesterday you mapped causes and effects from above. Today you're a parliamentary researcher in 1839. You have five witnesses. Your job isn't to decide who's 'biased.' Everyone is. Your job is to decide who is credible for which question."
• Write the guiding question on the board: "What were working conditions for children in cotton mills, 1830–1840, and did life improve for factory workers overall?"

2. Jigsaw expert work (12 min). Within each group, each student takes one document from A–D. Document E is shared by all.

• Students regroup across tables with same-document peers ("expert groups" of 6) and complete a Credibility Card:
  • Historical situation: What was happening when this was produced?
  • Intended audience: Who was meant to read or hear it?
  • Purpose: What did the author want to happen?
  • Point of view: What position or experience shapes this author?
  • Proximity: How close in time and place was the author to what they describe?
  • Credible for: One question this source answers well
  • Not credible for: One question it answers poorly
  • Red-flag words: 2–3 loaded or telling phrases

3. Home-group corroboration (15 min). Students return to their home groups and teach their document in about 90 seconds each. The group then completes a Credibility Matrix:

• Rate each source for each question: High / Medium / Low / N/A credibility, with a brief reason.
• Then the group writes a Corroborated Claim:

  "The strongest evidence suggests ___, because Documents __ and __ agree despite ___."

4. Document E deep dive (6 min, whole class). Project the table and the author's note. Ask:

• "The numbers look objective. Who's inside this data, and who isn't?"
• "Would a mill child's real wage look like this line? Why or why not?"
• "If a pro-factory writer and an anti-factory writer both cited this table, how would each use it?"

Make the key point explicit: quantitative sources have authors, choices, and blind spots too.

5. Whole-class Socratic segment (10 min). Seat groups in a rough circle. Rotate through these prompts:

• "Which source did you trust more at the end than at the beginning? Why?"
• "Document B admits the inspector's limitations. Does admitting weakness make a source more or less credible?"
• "Whose voice is absent? Parents? Enslaved cotton growers? Indian weavers? How does that silence shape what we can know?"
• "Connect back to Day 1. Which of Pembrey's assumptions from yesterday do today's documents challenge?"

6. Exit reflection (3 min). Students individually answer one reflection prompt below.

Student products: Credibility Card (individual), Credibility Matrix and Corroborated Claim (group), and exit reflection (individual).

Metacognitive Reflection

1. Which source did you instinctively trust or distrust before analyzing it? What triggered that instinct, and did analysis confirm or overturn it?
2. Complete this sentence: "I used to think a biased source was ___; now I think ___."
3. Transfer: Choose a current news topic. Name two sources with opposite interests. What would it mean if they agreed on something?

Assessment Rubric: Activity 3

Activity 4: Four Historians, One Revolution

Title and Goal

• Skill: Synthesis across conflicting historical interpretations

• Learning outcome: Students determine:

  • where historians genuinely disagree
  • where they are answering different questions
  • where their views can be integrated

  Students then construct a conditional, evidence-based thesis that goes beyond "picking a side" or "averaging." This is the foundation of the written analysis.

• Time: 50 minutes (Day 3)

Questioning Strategy

Open-ended

• What is each historian's real question? Are they all asking the same one?
• What would a synthesis that respects all four look like? What would it sacrifice?

Socratic

• You say Historian Okafor and Historian Lindqvist "disagree." Do they? Or is one explaining timing and the other location?
• "They're all partly right." Which parts, and how much? What evidence lets you weigh them?
• What assumption about human motivation is built into each interpretation? This connects back to Day 1.

What-if

• What if new evidence showed that British inventors were no more numerous than French ones in 1750? Which interpretation weakens most?
• What if you removed Atlantic slavery from the story entirely? Which historian's argument changes least, and what does that reveal?

Evidence-based

• Which evidence from Days 1–2 (the Hallowford data, the documents) supports or complicates each historian?
• What kind of evidence would each historian need to defeat the others?

Core Exercise

Synthesis across conflicting viewpoints, using a modified Structured Academic Controversy and a fishbowl Socratic seminar.

Sample Material: Four Interpretations

Original passages by fictional historians. Each is modeled loosely on a real scholarly tradition, noted in the teacher key.

Interpretation 1: Dr. Miriam Lindqvist*, "Prices Made the Machine" (fictional, 2011*)

"Britain industrialized because it was the one place where machines paid. British wages were high and British coal was cheap, so replacing workers with coal-powered engines made financial sense. In France or India, where labor was cheaper and fuel dearer, the same inventions would have lost money. Invention followed incentive. Culture and empire mattered only insofar as they fed into these prices."

Interpretation 2: Dr. Samuel Okafor*, "The Atlantic Engine" (fictional, 2014*)

"No account of British industry is honest if it begins in Manchester. The cotton that fed the mills was grown by enslaved people in the Americas. The profits of the Atlantic trade flowed into British banks and ports, and colonial markets absorbed British cloth while British policy suppressed Indian competitors. Britain did not escape the constraints of land and labor through ingenuity alone; it escaped by drawing on the land and labor of others."

Interpretation 3: Dr. Clara Fenwick*, "The Culture of Improvement" (fictional, 2009*)

"Cheap coal existed in China; high wages existed in the Netherlands. What Britain had in unusual abundance was a culture of practical experiment: instrument makers, engineers, and scientific societies convinced that nature could be understood and improved. Prices tell us why a machine was adopted, but not why it was invented in the first place, nor why Britain kept improving it."

Interpretation 4: Dr. Arthur Beale*, "Rules of the Game" (fictional, 2005*)

"Coal, cotton, and clever minds are necessary, but they require rules that let people profit from them. After 1688, Britain's Parliament constrained the Crown, protected property, enforced contracts, and made borrowing cheap and reliable. Investors could build a mill confident that it would not be seized. Without institutions, resources lie idle and ideas die in the workshop."

Teacher key: real scholarly traditions. Share these after the seminar:

Key teaching insight: The four historians partly answer different questions:

• Lindqvist: why machines were adopted
• Fenwick: why they were invented and improved
• Okafor: what material inputs and markets made scale possible
• Beale: what made investment possible

Recognizing this is the first step toward real synthesis.

Step-by-Step Instructions

1. Frame (3 min). Teacher says:

• "Four experts, four answers. Weak thinkers pick the one they like. Lazy thinkers say 'they're all a little right.' Today you'll do something harder: figure out exactly where they clash, where they're talking past each other, and what a defensible synthesis looks like."

2. Champion round (8 min). In each home group, every student champions one interpretation.

• Read it (2 min).
• Prepare a 60-second case that uses at least one piece of evidence from Days 1–2. Examples: Hallowford's canal and coal prices support Lindqvist; card C3 and E3 support Okafor.
• Present in turn (4 min). Listeners may only ask clarifying questions, not argue.

3. Synthesis Ladder (10 min). The group climbs four rungs on chart paper:

• The thesis must use a conditional or weighted structure, such as:

  "___ explains ___, but only because ___ made it possible; ___ matters less than its advocates claim because ___."

• Banned phrase: "All factors contributed equally."

4. Fishbowl Socratic seminar (22 min).

Setup:

• Inner circle: 8 students, drawn from 1–2 members per group.
• Outer circle: 16 students, each assigned to track one inner-circle speaker using the observation form. Tracking tasks:
  • Record one strong use of evidence.
  • Record one unexamined assumption.
  • Record one question you'd ask.

Round 1 (10 min). Seminar question:

"Was the Industrial Revolution primarily a British achievement or a global process that happened to be centered in Britain?"

Transition (2 min): Outer circle shares one tracked observation each (popcorn, 4–5 students).

Round 2 (10 min): Swap in 8 new students. Seminar question:

"If you had to cut one historian's interpretation from the textbook, which loss would distort the story most, and why?"

Teacher role: Stay out of the circle. Intervene only with probes, for example:

• "Are you two disagreeing about facts, or about what counts as a cause?"
• "What evidence from yesterday bears on that?"
• "Who hasn't spoken?"

5. Launch the written analysis (4 min). Distribute the prompt and rubric (below). Groups' Synthesis Ladder charts stay posted or are photographed for reference.

Remaining 8 students: Ensure every student not in either fishbowl round speaks during the transition or completes a written "outer circle contribution" card. That way all 24 are assessed.

Student products: Synthesis Ladder with conditional thesis (group), observation tracking form (individual, outer circle), and seminar participation (individual, inner circle).

Metacognitive Reflection

1. Which historian's argument did you find most persuasive at the start? Did the seminar change your mind? If not, what would have to be true for you to change your mind?
2. Identify a moment when you realized two "conflicting" historians were actually answering different questions. How did that change your approach?
3. Transfer: Think about a current debate, such as why some countries grow faster than others, or what causes climate change policy to succeed. How would you use the Synthesis Ladder to evaluate conflicting expert views?

Assessment Rubric: Activity 4

Individual Written Analysis (Due End of Week)

Prompt

To what extent was the British Industrial Revolution (1760–1850) caused primarily by conditions within Britain rather than by Britain's position in a global system of trade, empire, and enslaved labor?

In approximately 1.5 pages (typed, double-spaced, about 550–650 words):

1. State a conditional or weighted thesis. Do not claim all factors mattered equally.
2. Use at least one causal chain or feedback loop from your Day 1 map.
3. Identify at least one hidden assumption, either in a source or in a historian's argument.
4. Evaluate the credibility of at least two sources from the Day 2 set or the Day 3 interpretations, explaining what each is credible for.
5. Engage at least two historical interpretations, showing where they clash or complement.
6. End with one limitation of your argument: what evidence would you need to be more confident?

Note: Remember that all sources this week were invented for classroom use. Cite them by name as class documents (e.g., "Doc B, Lathe report"). Don't present them as real historical records.

Written Analysis Rubric

Scoring guide:

Formative Group Observation Checklist

Use this during Activities 1–4. Carry one sheet per group per day, and aim to observe each group for 2–3 minutes per activity.

Codes: ✓ = observed clearly ~ = partially or with prompting — = not observed

How to use it: Review the checklists after each day. If three or more students across the class show "—" on a behavior, re-teach that move in the next day's opener. For example, model a "credible for what?" statement before Activity 4.

Facilitation Notes

Common Student Misconceptions

Scaffolding for Struggling Students

Assumption hunting: Provide sentence frames:

• "For this to be true, the author must believe that ___."
• "The author doesn't say ___, but the argument depends on it."

Causal mapping: Give a partially completed map with 3 arrows already drawn and labeled. Students add 4 more.

Sourcing:

• Provide a HIPP question card with specific sub-questions. For example, under Purpose: "Is the author trying to change a law? Sell a newspaper? Teach a lesson?"
• Pair struggling students with a strong reader in expert groups.
• Pre-assign Document B, which is the most straightforward, to students who need the most support.

Synthesis:

• Provide a "question sorting" template. Match each historian to a question card: "Why adopted?" / "Why invented?" / "What inputs?" / "What made investment safe?"
• Offer this thesis template:

  "Although ___ argues ___, the evidence shows ___ mattered more for ___ because ___."

Writing:

• Offer a paragraph-by-paragraph outline template for the written analysis.
• Allow students to submit a thesis draft midweek for quick feedback.

Discussion:

• For quiet students, allow a written "entry ticket" contribution before the seminar that can be read aloud.
• Offer inner-circle placement in Round 2, after they've watched Round 1.

Extension Challenges for Advanced Learners

1. Write the counter-pamphlet. Write a 200-word reply to Pembrey (Activity 1) in 1833 voice. Then have a peer hunt for your hidden assumptions.
2. Design better data. Redesign Document E to measure the living standards of mill families, including children and women. What records would you need? What would still be missing?
3. The fifth historian. Write a fifth interpretation that challenges all four. Examples:
   • an environmental history focused on energy transition
   • a gender-focused argument about the "industrious revolution" of household labor and consumption
4. Comparative counterfactual. Using the four interpretations, argue why industrialization did not begin in Qing China or Mughal India, and explain which interpretation best explains the absence.
5. APUSH connection. Trace the E3 arrow (British cotton demand → expansion of slavery in the U.S. South) into the 1850s. How does this complicate "domestic vs. global" framings of American history?
6. Historiography sleuth. After the reveal, research one real historian behind a modeled interpretation. Evaluate how well the fictional passage represented that historian's actual argument, and what it oversimplified.

Closing note for the teacher: Across the week, the skills build on each other:

• Day 1 teaches students to see what arguments hide.
• Day 2 teaches them to see what sources can and cannot tell us.
• Day 3 teaches them to reassemble competing arguments into their own.

The written analysis asks them to do all four skills at once. When you return papers, show students the connection explicitly. Revealing that the week's sources were invented is itself a final lesson in source criticism.