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Money · Guided lesson

Build a market demand schedule

About 8 minutes · 3 reading + 5 practice and checks
Time includes reading, practice, and questions. Extra videos or further study are optional.
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A fictional local-market analysis with demand/supply schedules, equilibrium, shifts, opportunity costs and a bounded price-change explanation.

Keep your working files in your own notebook or software. Save a private description, checklist, and work link in My Proof.

What to include

  • An opportunity-cost table with feasible alternatives and explicit value assumptions.
  • A demand table and price-change quantity explanation.
  • A supply table with matched units and a condition-change note.
  • A market-balance table with model equilibrium and limits.
  • A shift/movement comparison with an explicit causal-assumption note.
  • A complete fictional microeconomic market brief.

Review and revise

Use these criteria to check your work and choose what to improve.

  • All supplied records reconcile and the decision uses the named case rules.
  • Calculations show units, intermediate values and a second check.
  • Changed-input practice revises the affected result and identifies uncertainty.
  • The final project combines six lesson records, separates fictional assumptions from current rules, and states a supported next step.
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Before you begin

The idea in everyday life

This is an original fictional practice case. No account, payment, personal record or outside participation is required. Fictional notebook market per week: at $2 buyers demand 90; at $4, 70; at $6, 50. No actual sales are observed.

The idea

A demand schedule records quantities willing and able to be bought at each price in a fixed period, holding other specified conditions unchanged.

Follow along

Build a market demand schedule — worked practice

A demand schedule records quantities willing and able to be bought at each price in a fixed period, holding other specified conditions unchanged.

Use paper or a local table; label all amounts as fictional USD unless the case names another unit. Fictional notebook market per week: at $2 buyers demand 90; at $4, 70; at $6, 50. No actual sales are observed.

Demand schedule with other conditions fixed

Paste at A1.

ANotebook price USDBQuantity demanded notebooks/week
290
470
650

Copy as plain text
  1. 1. Step 1: Draw price and weekly quantity-demanded columns

    Draw price and weekly quantity-demanded columns.

    You should see: Three pairs: (2,90),(4,70),(6,50).

    A demand schedule records quantities willing and able to be bought at each price in a fixed period, holding other specified conditions unchanged.

  2. 2. Step 2: Keep units and the period fixed

    Keep units and the period fixed.

    You should see: USD/notebook and notebooks/week.

    Keep this intermediate result so the final decision can be checked.

  3. 3. Step 3: Compare the $4-to-$6 change

    Compare the $4-to-$6 change.

    You should see: Quantity demanded falls by 20 notebooks/week.

    Keep this intermediate result so the final decision can be checked.

  4. 4. Step 4: Explain the scope

    Explain the scope.

    You should see: These are supplied hypothetical demand quantities, not proof of completed purchases or each person’s preferences.

    Keep this intermediate result so the final decision can be checked.

Now change one thing

At $6 revised quantity demanded is 45. Fall from the $4 quantity of 70?

Your work

What to finish

A demand table and price-change quantity explanation.

Common mistake

Watch for this

Calling demanded quantity observed sales.

How can I tell I understand it?

Construct and interpret a hypothetical weekly demand schedule with fixed units on the supplied changed case while preserving the stated rule and checking the final record.

Try 3 questions

Quick knowledge check

Answer all 3 questions. Get at least 2 right and the lesson completes automatically.

Not yet passed

You’ll get an explanation for each answer. Signed in? Your results save to your account.

1Quantity demanded falls from 80 to 60 when price rises: change in quantity?
2Does a demand schedule show actual sales automatically?
3Income changes while price is held fixed. Which interpretation needs testing?
0 of 3 answeredApply the lesson to a short question, then review the explanation.
2
Finish this lesson

Pass the check. We’ll save the progress.

Answer all 3 questions above and get at least 2 right. You can review the explanations and try again.

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Tools, templates, and lesson sources

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Sources and further reading

Explore the references behind this lesson.

Federal Reserve Education — Supply and Demand Infographic
Source & access notes · checked 2026-10-01

Official page opened/read during Money expansion authoring; checked the relevant concept and access state. These sources do not establish funding eligibility.

Access: Official resource page and its readable overview/transcript inspected; no external LMS lesson or media playback is claimed.

Reuse: Original fictional practice, questions and calculations; paraphrased concepts with a source link. No source exercise copied.

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