Alabama Social Studies SS24.E.2b

Social Studies12th GradeFundamental Economic Concepts

The Standard

SS24.E.2: Compare marginal benefits and marginal costs of an action, using rational decision-making.

Illustrate and explain how rational decision-making involves the consideration of trade-offs and opportunity costs.

2024 Alabama Course of Study: Social Studies

Teacher's field guide

What Students Need to Do: Students compare choices when they cannot have everything. They identify what each choice gives up and the value of the best option they did not choose.
What Mastery Looks Like: A student can explain why they chose a study session over a paid shift. They can name the shift as the next-best option and explain why its value is the opportunity cost.
Common Misconceptions: Students may call the price of an item its opportunity cost. They may also add up every option they passed over, rather than identify the best one.
How to Assess It: Exit ticket: You have two hours. You value studying at $40, babysitting at $30, and gaming at $15. Which do you choose, what do you give up, and what is its value?

Lesson moves

Give pairs $20 in play money and cards for a concert, book, and meal; have them choose one and name what they give up.
Ask students to write: Would you take a four-hour Saturday shift for $60 or study for a test? Explain your choice.
Give students cards labeled earn $30, study worth $40, and game worth $15; have them rank the options and circle the next-best value.
Show a local job posting with pay and hours; have students compare one shift with a planned study block and explain their choice.

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