Economic Foundations & Market Decisions — Workshop · Government, Civic Participation & Economics, Grade 12
5 focused units, followed by an evidence workshop, chapter review, and chapter quiz.
Evidence workshop: Economic Foundations & Market Decisions
Your assignment
How do scarcity, incentives, and institutions shape choices and their consequences?
Three 45–60-minute sessions: examine the packet; draft and discuss; revise using the marking criteria.
Prepare
- The supplied source-study packet, chapter explanations, and labeled evidence cases.
- Notebook, calculator, and the supplied diagrams. Linked original documents are optional extensions.
Plan, draft, revise
- Identify the reference, its institution, date if supplied, purpose, and form; label invented course data separately.
- Separate legal text, definitions, supplied observations, calculations, and interpretation.
- State a bounded claim answering the chapter question.
- Connect two chapter examples to the source-study packet.
- Draft 350–500 words or an equivalent annotated oral presentation, explaining a mechanism and a limit.
- Compare the four-paragraph model after attempting your answer; revise concepts, calculations, evidence, and unsupported generalizations.
Discuss your choices
- Which observations directly support the claim?
- What can the item not tell us about other people or places?
- Which independent evidence would test the explanation?
Success criteria
- Explain the relevant institution or economic concept accurately; show correct calculations where needed.
- Connect supplied evidence and stated assumptions to an explained conclusion.
- Compare feasible options and their effects on different people without stereotypes.
- Identify a limitation, tradeoff, uncertainty, or condition that qualifies the conclusion.
Original-source study packet: Market models: price, quantities, and a changed assumption
Official educational reference: the Federal Reserve Bank of St. Louis Economic Lowdown explains foundational economic concepts. The following table is an invented weekly market for a teaching product, not a Federal Reserve measurement. Quantities are units per week, prices are dollars per unit, and all other modeled conditions initially remain fixed.
Supplied schedules: at prices $1, $2, $3, $4, and $5, quantities demanded are respectively 80, 60, 40, 20, and 0; quantities supplied are 0, 20, 40, 60, and 80. In a second scenario, quantity demanded rises by 40 units at every listed price, while the supply schedule remains unchanged. Do not confuse this shift with movement caused only by a price change.
Inquiry task: identify the first equilibrium and the shortage at $2. Identify the new equilibrium after the demand shift. Explain the adjustment mechanism and one limit of the model. Then consider why equality of modeled demand and supply does not independently establish fairness, absence of external harm, or the best policy.
Chapter evidence for comparison
The cases below are course-authored teaching scenarios or summaries. Invented numbers and claims are labeled; they are not transcriptions of historical witnesses. Attempt the inquiry using the supplied material before consulting the model.
| Unit | Evidence case |
|---|---|
| Scarcity, Opportunity Cost & Decisions at the Margin | Invented model: eight hours; two booklets or four posters per hour; constant productivity. A plan promises 12 booklets and 16 posters in those eight hours. |
| Supply, Demand, Equilibrium & Market Changes | Invented weekly schedule: prices $1–$5; original demand 80,60,40,20,0; supply 0,20,40,60,80. Demand then rises by 40 at every price. |
| Firms, Competition, Market Power & Profit | Invented period: 100 units sold at $5; accounting costs $420; owner’s forgone alternative income $60 is not included in those costs. |
| Production, Entrepreneurship & Economic Institutions | Invented bakery: 80 loaves in 20 hours before a change; 100 in 20 hours afterward; wage records and other causal evidence are absent. |
| Externalities, Public Goods & Policy Responses | Invented model: private cost $10 per unit and separately measured external harm $4 per unit; proposed charge $4. No demand curve or enforcement data are supplied. |
Parent / teacher model and marking guidance
The packet isolates price and quantity relationships under stated assumptions. Scarcity means choices have opportunity costs, but this schedule does not measure every social cost or explain why demand changed. The model can test a particular mechanism when its definitions are held constant. It is not a transcript of real buyers’ behavior or a guarantee that an actual market instantly reaches a single price.
Initially quantity demanded and supplied are both 40 at $3, so the table equilibrium is $3 and 40 units per week. At $2, demand is 60 and supply is 20, leaving a shortage of 40 units. After adding 40 to each demand quantity, demand at $4 is 60 and supply is 60. The new tabulated equilibrium is $4 and 60 units; at the old $3 price the changed demand is 80 against supply of 40.
The shortage creates pressure for adjustment under the competitive model, while firms and buyers respond to changed opportunities. The firms unit adds costs, entry, and market power; the production unit adds productive capacity and institutions. These conditions affect how well the simplified mechanism describes a particular market. A demand shift and an own-price movement should remain distinct even when both eventually change observed transactions.
Equality of demand and supply answers a model question rather than every evaluative question. External harms, unequal purchasing power, information problems, and public-goods provision may require further analysis. A policy comparison should define the problem, identify who benefits and bears costs, and state relevant assumptions. Students may favor different responses when their reasoning correctly uses the table and acknowledges evidence the model does not supply.
- Explain the relevant institution or economic concept accurately; show correct calculations where needed.
- Connect supplied evidence and stated assumptions to an explained conclusion.
- Compare feasible options and their effects on different people without stereotypes.
- Identify a limitation, tradeoff, uncertainty, or condition that qualifies the conclusion.
Accept a different interpretation when the learner supports it with relevant evidence. Discuss the draft before assigning a final mark.