Texas TEKS 3.6.A
The Standard
explain how supply and demand affect the price of a good or service
Texas Essential Knowledge and Skills for Social Studies
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students explain why prices often rise when many buyers want an item but few are available. They also explain why prices often fall when demand drops or more items become available.
What Mastery Looks Like
- Students can read a simple market situation, identify what changed, and predict whether the price will rise or fall. They support the prediction with supply and demand.
Common Misconceptions
- Students may think sellers can raise prices without considering buyers or available goods. They may also confuse supply with demand or assume high demand always means high supply.
How to Assess It
- Give this exit ticket: “A store has only five popular toys left, but 20 customers want one. Predict what may happen to the price and explain why.”
Lesson moves
Ways to Teach It
Give groups ten tokens to bid on three pencils, then repeat with twelve pencils and compare the final prices.
Ask students to write why lemonade might cost more on a hot day than on a cold day.
Play a card sort where students match market changes with rising prices, falling prices, or no likely change.
Compare grocery advertisements for strawberries in and out of season, then discuss how availability may affect price.
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Printable 3.6.A Worksheet
A ready-to-print activity worksheet aligned to 3.6.A, with an answer key for the teacher on its own page. No account needed.
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Related Standards
- 4.10.A
describe how the free enterprise system works, including supply and demand;
- 5.11.A
explain how supply and demand affects consumers in the United States; and
- 3.6.C
explain how the cost of production and selling price affect profits; and
- 2.6.A
explain how work provides income to purchase goods and services; and
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