1. How is economics a science?

2. Why do economists make assumptions?

3. Should an economic model describe reality exactly?

4. Name a way that your family interacts in the factor market and a way that it interacts in the product market.

5. Name one economic interaction that isn't covered by the simplified circular-flow diagram.

6. Draw and explain a production possibilities frontier for an economy that produces milk and cookies. What happens to this frontier if disease kills half of the economy's cows?

7. Use a production possibilities frontier to describe the idea of "efficiency."

8. What are the two subfields into which economics is divided? Explain what each subfield studies.

9. What is the difference between a positive and a normative statement? Give an example of each.

10. Why do economists sometimes offer conflicting advice to policymakers?