Idaho Social Studies 9-12.EC.3

Social StudiesGrades 9–12Economics

The Standard

Identify how incentives determine what is produced and distributed in a competitive market system.

Idaho Content Standards: K-12 Social Studies · Fundamental Economic Concepts

Teacher's field guide

What Students Need to Do: Students use prices, costs, and customer demand to explain what competing sellers choose to make. They explain how prices and store choices affect where goods are sold and who can buy them.
What Mastery Looks Like: Given a rise in demand, a student predicts that sellers may make more if they can earn a profit. They explain why stores stock goods where they expect sales and why some buyers cannot afford the price.
Common Misconceptions: Students may think sellers make what people need most, even if buyers cannot pay. They may think a higher price always leads to more production, regardless of costs. Some confuse distribution with sharing goods equally.
How to Assess It: Exit ticket: Two snack stands sell fruit cups for $2. More students want fruit cups, and the price rises to $3. Explain what the stands might stock next and who can buy the fruit cups.

Lesson moves

Give groups snack picture cards, cost cards, and play money; run competing stands, change buyer demand, and choose what to restock.
Ask, 'If customers suddenly want more oranges, why might stores order more, and who might not be able to buy them?'
Play Market Match: give teams demand, price, and cost cards; have them predict what sellers make and which buyers purchase it.
Compare local grocery flyers for eggs; ask which store shoppers might choose and how each store might adjust its egg orders.

Free download

A ready-to-print activity worksheet aligned to 9-12.EC.3, with an answer key for the teacher on its own page. No account needed.

PDF, US Letter, prints cleanly in black and white.

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