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college · HANDS-ON COURSE

Principles of macroeconomics

Prepare a dated economic briefing reconciling definitions, changes, revisions, uncertainty and competing policy interpretations.

An introductory investigation sequence with independent portfolio expectations, not a complete credit-bearing college survey. Broader readings, additional models and instructor-reviewed assessment remain necessary.

Preparation and direct entry
  • Read tables, compare proportions and explain a claim in ordinary language.
  • Units remain directly accessible; use worked examples before independent transfer when needed.

Open any lesson. Recaps explain assumed concepts without locking access.

0/27 lessons completed · 0 marked skipped. Skips do not reduce this course's completion denominator or award understanding. Shared lesson work is reused across paths; project evidence belongs to this course.

Lesson sequence

Each linked investigation opens on its own page. Your selected course stays with you as you move between lessons.

  1. Investigation 1 of 27

    Name what a choice gives up

    About this lesson

    What is the cost of using a free room?

    Open investigation

  2. Investigation 2 of 27

    Read a frontier, an inefficient point and a technology shift

    About this lesson

    Does producing less of both goods prove resources are scarce?

    Open investigation

  3. Investigation 3 of 27

    Compare relative costs and the distribution of gains

    About this lesson

    Can trade create gains without making everyone better off?

    Open investigation

  4. Investigation 4 of 27

    Trace exchanges from buyer and seller schedules

    About this lesson

    Which trades remain worthwhile after costs rise?

    Open investigation

  5. Investigation 5 of 27

    Separate output growth from price changes

    About this lesson

    Did the economy produce more or just charge more?

    Open investigation

  6. Investigation 6 of 27

    Reconcile expenditure, income and the business cycle

    About this lesson

    Why are imports subtracted from an expenditure total?

    Open investigation

  7. Investigation 7 of 27· Output and wellbeing

    Choose evidence beyond GDP

    About this lesson

    Test paid care, disaster repair and population growth before using GDP to judge living conditions.

    Open investigation

  8. Investigation 8 of 27

    Build and criticize a fixed basket

    About this lesson

    Can two households experience different inflation?

    Open investigation

  9. Investigation 9 of 27

    Use the right labor-market denominator

    About this lesson

    Can unemployment fall without anyone finding a job?

    Open investigation

  10. Investigation 10 of 27

    Compare real monthly and annual economic measures

    About this lesson

    Can a price index fall for one month yet remain higher over a year?

    Open investigation

  11. Investigation 11 of 27

    Reconstruct a GDP release before calling it growth

    About this lesson

    Did the economy change when an estimate of the same quarter was revised?

    Open investigation

  12. Investigation 12 of 27· Business-cycle evidence

    Separate recovery, prior peaks and potential output

    About this lesson

    Use dated GDP, potential-output and payroll records to test three different recovery claims.

    Open investigation

  13. Investigation 13 of 27

    Calculate spending rounds and challenge their assumptions

    About this lesson

    When does an initial purchase generate repeated spending?

    Open investigation

  14. Investigation 14 of 27

    Distinguish demand and supply shocks on a graph

    About this lesson

    Can falling output come with either rising or falling prices?

    Open investigation

  15. Investigation 15 of 27

    Compare fiscal multipliers and automatic responses

    About this lesson

    Do equal spending and tax changes cancel in the simplest model?

    Open investigation

  16. Investigation 16 of 27

    Compare money returns with purchasing power

    About this lesson

    Does a larger balance always buy more?

    Open investigation

  17. Investigation 17 of 27

    Keep deposits, reserves and loans distinct

    About this lesson

    Change a two-bank ledger and explain which transactions create deposits, move reserves or reduce equity.

    Open investigation

  18. Investigation 18 of 27

    Keep money and loanable-funds graphs separate

    About this lesson

    Do two interest-rate diagrams measure the same market?

    Open investigation

  19. Investigation 19 of 27

    Choose the correct monetary implementation framework

    About this lesson

    Will adding reserves always lower the overnight rate?

    Open investigation

  20. Investigation 20 of 27

    Evaluate policy timing and uncertain effects

    About this lesson

    Will a delayed response arrive after conditions change?

    Open investigation

  21. Investigation 21 of 27

    Separate a short-run tradeoff from changing expectations

    About this lesson

    Can policymakers hold unemployment below its assumed natural rate forever in this model?

    Open investigation

  22. Investigation 22 of 27

    Separate bond pricing, money measures and an identity

    About this lesson

    Does a larger money stock by itself identify the cause of inflation?

    Open investigation

  23. Investigation 23 of 27

    Trace government borrowing and a debt stock

    About this lesson

    Can public borrowing alter the private financing comparison?

    Open investigation

  24. Investigation 24 of 27

    Separate growth in output from growth per person

    About this lesson

    Can total production rise while output per resident falls?

    Open investigation

  25. Investigation 25 of 27

    Classify international flows before assigning signs

    About this lesson

    Is a foreign purchase of a bond an export of a good?

    Open investigation

  26. Investigation 26 of 27

    Read an exchange-rate quotation and external accounts

    About this lesson

    What does a currency appreciation make cheaper?

    Open investigation

  27. Investigation 27 of 27

    Connect capital flows with a currency-market graph

    About this lesson

    How can higher demand for domestic assets change the exchange rate?

    Open investigation

Cumulative projectSaved workspace · human review remains separate
CUMULATIVE PROJECT

Principles of macroeconomics evidence portfolio

Prepare a dated economic briefing reconciling definitions, changes, revisions, uncertainty and competing policy interpretations.

Evidence and review criteria

  • Question is narrow enough for the cited evidence.
  • Units, denominators, arithmetic and source context are correct.
  • Comparison holds relevant assumptions fixed and acknowledges missing factors.
  • Distribution and uncertainty remain visible alongside averages.
  • An independently reasoned revision is supported; submission alone is not verified mastery.

Use your lesson captures and citations. This saved workspace supports a reviewer; it does not automatically grade your writing or certify proficiency.

Review examples and quality criteria

These are authored teaching examples for practicing review, not calibrated scoring standards. Apply your course’s specific rubric above. Different conclusions can be defensible when evidence supports them; factual and numerical errors still require correction.

Claim needing revision

The model raises total surplus, so the policy will benefit everyone.

More defensible reasoning

Under the stated schedules, the modeled total rises. The next step is to calculate buyer, seller and public effects separately, identify external costs and state which behavioral assumptions drive the result. A larger total permits some losses and is not a measured real-world policy effect.

Why the revision helps

Efficiency, distribution and empirical prediction answer different questions. A completed answer must supply the actual model values and a sensitivity case.

Assess the artifact, with assistance recorded separately
CriterionDeveloping evidenceSupported evidenceWell-substantiated evidence
Question and contextA broad topic or undefined population.A focused question, time/place and relevant definitions.A justified scope with context that changes the interpretation.
Sources and claimsNames a source but does not connect its contents to a claim.Cites specific records and explains provenance and relevance.Weighs limitations, corroboration and meaningful disagreement.
Mechanism and analysisGives a conclusion with missing steps or unclear units.Shows a valid causal chain, calculation or interpretation.Tests a credible alternative and explains sensitivity or uncertainty.
Transfer and revisionRepeats the worked answer despite changed facts.Adapts the reasoning to the unfamiliar case.Explains why the change matters and what evidence would reverse the conclusion.

Use “missing” when no relevant evidence is supplied. Do not average these descriptions into an automatic pass score. Record whether the learner followed an example, used guidance or worked independently, and review quality separately.

  1. Locate one specific claim and its supporting source or calculation.
  2. Check the context, units and intermediate reasoning.
  3. Identify one plausible alternative and the evidence that distinguishes it.
  4. Ask for a revision or an unfamiliar application; explain the reason for the request.

The saved project remains a draft or a local submission. This page does not record instructor certification or infer understanding from response length.

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Export this project with your evidence
Separate application casesVersioned evidence · earlier work remains intact

Apply your reasoning to a separate case

These versioned cases add distinct evidence to the portfolio. Earlier drafts and local submissions remain intact. Write your explanation before revealing review notes when you want to retain a pre-feedback attempt.

NEW APPLICATION · VERSION 1

Reconcile output and labor headlines

Use this packet for a fresh written application. All records below are original fictional teaching materials. They test reasoning under stated conditions and do not establish actual historical or population facts. Your original course-project draft remains separate.

Record output

Citation ID: social:independent:macroeconomics:v1-output

Fictional economy: nominal output rises from 200 to 242 units while a compatible output price index rises from 100 to 110. Use this one-index simplification; it is not an official chain-weighted calculation.

Record labor

Citation ID: social:independent:macroeconomics:v1-labor

Initially 90 employed and 10 unemployed people form a labor force of 100 in a relevant adult population 125. Later 5 job seekers stop searching; employment and population remain unchanged.

Record headline

Citation ID: social:independent:macroeconomics:v1-headline

A report says output grew 21% in real terms and five people found work because unemployment fell. It gives no distributional or wellbeing measures.

This case is shared across paths that use it. Revisiting it in another course retains drafts and known review-note exposure; it is not a new unseen assessment.

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NEW APPLICATION · VERSION 1

Audit a bank operation and two interest-market claims

Use this packet for a fresh written application. All records below are original fictional teaching materials. They test reasoning under stated conditions and do not establish actual historical or population facts. Your original course-project draft remains separate.

Record operation

Citation ID: social:independent:financial-sector:v1-operation

Fictional opening accounts, credits: central bank securities 150, reserve liabilities 90, public currency 60, equity 0. Commercial banking sector reserves 90, securities 30, loans 180, customer deposits 270, equity 30. A nonbank holds securities 60 and the listed deposits. The central bank buys 12 of securities from that nonbank and settles through its bank deposit. No new commercial loan, repayment, valuation change or currency withdrawal occurs. Nonbank holdings are a partial portfolio, not a complete balance sheet.

Record money-market

Citation ID: social:independent:financial-sector:v1-money-market

Separate fictional classroom scenario, not a calibrated consequence of operation: nominal annual interest i is in percentage-point numbers. Desired money balances Md=150-15i; initial fixed supply 90; later fixed supply 105. Hold demand fixed. Quantities are stocks in teaching units.

Record financing-market

Citation ID: social:independent:financial-sector:v1-financing-market

Another independent fictional scenario: real annual interest r is in percentage-point numbers; private saving S=12+3r and private investment demand I=48-3r, in credits per year. Initial public borrowing is zero; later add government borrowing 12 to total financing demand. Hold these private schedules fixed.

Record expectations

Citation ID: social:independent:financial-sector:v1-expectations

Separate transmission counterexample: a nominal borrowing rate falls from 6% to 4%, while expected inflation falls from 2% to 0%. Use the additive expected-real-rate approximation. Investment schedule I=50-3r, in annual teaching expenditure units. A briefing claims every nominal-rate cut necessarily increases investment.

Record claim

Citation ID: social:independent:financial-sector:v1-claim

A fictional briefing says: The central-bank purchase immediately creates 120 of new bank loans because the multiplier is ten; both interest-market graphs use real rates and money stocks; public borrowing 12 displaces exactly 12 of private investment; and the nominal-rate cut proves investment rose. No reserve requirement, lending-response estimate, observed market-rate series or output-response evidence is supplied.

This case is shared across paths that use it. Revisiting it in another course retains drafts and known review-note exposure; it is not a new unseen assessment.

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NEW APPLICATION · VERSION 1

Reconcile external accounts and challenge a currency-policy briefing

Use this packet for a fresh written application. All records below are original fictional teaching materials. They test reasoning under stated conditions and do not establish actual historical or population facts. Your original course-project draft remains separate.

Record accounts

Citation ID: social:independent:open-economy:v1-accounts

Fictional annual flows in common domestic accounting credits: goods exports90, goods imports120, net services receipts20, net primary income-2, net current transfers-3. Net capital transfers received2. Residents acquire foreign financial assets12 and incur liabilities to nonresidents25. No derivatives, valuation changes or statistical discrepancy. Use financial inflow-positive balance=liabilities incurred minus assets acquired; also translate to net-lending-positive presentation. These aggregate records describe a different scenario from the market below.

Record currency-market

Citation ID: social:independent:open-economy:v1-currency-market

Separate fictional market: e is foreign units per domestic unit; Q is domestic currency units per period. Original demand Qd=110-10e; supply Qs=30+10e. An independently stipulated increase in foreign demand for domestic assets raises demand to130-10e. Supply stays fixed. Calculate clearing before/after and the imbalance at the old quote after the shift. No allocation rule, adjustment timing or reserve stock is supplied.

Record invoices

Citation ID: social:independent:open-economy:v1-invoices

For the currency-market quotes, a foreign seller fixes a machine price at50 foreign units and a domestic seller fixes an export price at8 domestic credits. No fees or price changes. Quantities purchased are not supplied.

Record policy

Citation ID: social:independent:open-economy:v1-policy

Another separate record: nominal domestic borrowing rate falls from5% to3%, expected inflation from2% to0%. Use the additive expected-real-rate approximation and investment schedule I=60-4r. Foreign rates, risk, actual capital flows and observed trade quantities are unavailable.

Record briefing

Citation ID: social:independent:open-economy:v1-briefing

An analyst claims: The goods balance is the complete current account; negative net-lending financial transactions prove an outflow. The currency-market shift makes domestic currency depreciate by the same percentage as the reciprocal quote rises. It proves net exports and total output fall by the same percentage. The nominal-rate cut guarantees higher investment and caused the separately stipulated asset-demand shift.

This case is shared across paths that use it. Revisiting it in another course retains drafts and known review-note exposure; it is not a new unseen assessment.

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NEW APPLICATION · VERSION 1

Audit a growth claim and compare a delayed capacity policy

Use this packet for a fresh written application. All records below are original fictional teaching materials. They test reasoning under stated conditions and do not establish actual historical or population facts. Your original course-project draft remains separate.

Record production

Citation ID: social:independent:growth-policy:v1-production

Fictional comparable annual records. Year A: real output 2400 units, residents 120, employed workers 60, total hours 120000. Year B: output 2640, residents 132, workers 66, total hours 132000. Year C: output 2772, residents 132, workers 66, total hours 126000. Output quality and measurement definitions are fixed. No information identifies training, equipment, worker composition or technology changes.

Record capital

Citation ID: social:independent:growth-policy:v1-capital

Separate prospective two-year equipment ledger. Opening stock 150 units; retire 10% of each year's opening stock; install gross investment at year end. Baseline investment 20 each year. Policy scenario investment 12 each year. Ignore other stock changes. An alternative public asset installs 10 units at the end of year one, then depreciates 10% in year two with no new additions. Private and public units are physical counts; their productive services need not be equivalent.

Record demand

Citation ID: social:independent:growth-policy:v1-demand

Separate teaching economy: AD P=A-Y, SRAS P=30+Y, potential output 90. Initially A=190. A package adds 20 to A when delivered; no extra multiplier. Before delivery, private recovery raises non-policy A to210. All values are teaching units. At delivery, supply and potential are unchanged.

Record capacity

Citation ID: social:independent:growth-policy:v1-capacity

Later success scenario: the package raises potential output to100 and changes SRAS to P=10+Y. AD remains P=230-Y. Failure scenario: no productive-capacity improvement. No longer-run wage/price adjustment rule, probabilities, policy costs or distributional effects are supplied. These are stipulated scenarios, not observed impacts of the equipment ledger.

Record memo

Citation ID: social:independent:growth-policy:v1-memo

An adviser claims: Year B proves workers became10% more productive and everyone became better off. Year C proves training caused a10% hourly productivity gain. Any positive gross investment grows the capital stock; public units replace private productive services one for one. The package closes the original output gap even if private recovery occurs before delivery, and the later success scenario proves the policy is worth its cost.

This case is shared across paths that use it. Revisiting it in another course retains drafts and known review-note exposure; it is not a new unseen assessment.

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NEW APPLICATION · VERSION 1

Reconcile inflation, expectations and a changing debt ratio

Use this packet for a fresh written application. All records below are original fictional teaching materials. They test reasoning under stated conditions and do not establish actual historical or population facts. Your original course-project draft remains separate.

Record quantity

Citation ID: social:independent:inflation-debt:v1-quantity

Separate fictional annual records, consistent definitions. Year 0: money stock100 credits, velocity4 per year, real output200 units. Year 1: money110, velocity4, real output220. Year 2: money121, velocity3.8, real output220. Year 3: money133.1, velocity3.8, real output242. Use MV=PY; P is credits per output unit. These observations do not supply a behavioral model or an identified monetary intervention.

Record expectations

Citation ID: social:independent:inflation-debt:v1-expectations

Separate one-period teaching model: inflation pi=e-(u-5)+s, with all rates in percentage-point numbers. Expected inflation e initially2, natural unemployment5, disturbance s initially0. An observed point has unemployment6 and inflation4. Compare two proposed explanations: e remains2 while s becomes3; or e becomes5 while s stays0. Do not assume either explanation is observed. The vertical natural-rate benchmark is u=5; a stationary expectations-consistent point additionally requires no disturbance and actual inflation equal to expected inflation.

Record budget

Citation ID: social:independent:inflation-debt:v1-budget

Separate fictional government, credits. Opening gross debt200; prior annual nominal GDP400. Interest is5% of each year's opening debt, paid in that year. Year 1: purchases60, transfers15, revenues80, nominal GDP440; acquire a financial asset for6 using new debt outside this exercise's deficit measure. Year 2: purchases62, transfers16, revenues92, nominal GDP420; no asset acquisition. Overall deficit = purchases + transfers + interest - revenues; negative means surplus. End debt = opening debt + overall deficit + debt-financed asset acquisition. No other adjustments; retain unrounded intermediate values. Asset quality, real output, price breakdown, maturity and refinancing conditions are unknown.

Record briefing

Citation ID: social:independent:inflation-debt:v1-briefing

An analyst argues: Money grows10% each year, so inflation is10% each year. The unemployment/inflation point uniquely proves expectations increased, and the natural-rate intersection is always stationary. A lower debt/GDP ratio proves repayment, while a rising ratio proves a deficit. The asset acquisition must be added to purchases, and these records demonstrate that one policy caused every outcome.

This case is shared across paths that use it. Revisiting it in another course retains drafts and known review-note exposure; it is not a new unseen assessment.

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Course references