Unit 4: Lesson 21 - Productivity, Diminishing Marginal Returns, and the Demand for Labor Students produce greeting cards with a fixed number of scissors and markers, and a variable number of workers. They discuss factors affecting workers productivity and the law of diminishing marginal returns. With a partner, they use marginal analysis to solve a problem about how many workers a firm should hire. Concepts: - Specialization
- Productivity
- Law of Diminishing Marginal Returns
Standards: - Standard #1: Scarcity
- Standard #2: Decision Making
 Unit 7: Lesson 41 - Why People Trade: Comparative Advantage The students decide why people buy foreign goods, and they practice measuring the comparative advantage of different producers. Concepts: - Opportunity Cost
- Specialization
- Comparative Advantage
- Trade
Standards: - Standard #6: Specialization
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