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AP Economics. “ Econ, Econ ”. Econ. Terms to know:. Scarcity Economics Microeconomics vs. Macroeconomics Trade-off Marginal Costs Marginal Benefits Positive Statements vs. Normative Statements. 3 FACTS!.

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AP Economics


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    1. AP Economics “Econ, Econ” Econ

    2. Terms to know: Scarcity Economics Microeconomics vs. Macroeconomics Trade-off Marginal Costs Marginal Benefits Positive Statements vs. Normative Statements

    3. 3 FACTS! • Econ is a skills based course. Learning methodology resembles algebra more than history. • You MUST complete assignments BEFORE class • Class time should be about sharpening skills, rather than just introducing/reviewing concepts. • Econ is a very intuitive subject, but it requires PRECISION. • Many FRQ are similar to geometric proofs and cannot be “fluffed”

    4. Unit 1: Basic Economic Concepts • Assignment: Problem Set #1

    5. What is Economics in General? • Economics is the science of scarcity. • Scarcity is the condition in which our wants are greater than our limited resources. • Since we are unable to have everything we desire, we must make choices on how we will use our resources. • In economics we will study the choices of individuals, firms, and governments. Economics is the study of _________. choices

    6. Examples: • You must choose between buying jeans or buying shoes. • Businesses must choose how many people to hire • Governments must choose how much to spend on welfare. Economics Defined Economics-Social science concerned with the efficient use of limited resources to achieve maximum satisfaction of economic wants. (Study of how individuals and societies deal with ________) scarcity

    7. Keep in Mind… • McConnell and Brue, page 6- • “ In spite of the practical benefits, economics is mainly an academic, not a vocational, subject…economics is NOT primarily a how-to-make-money area of study.”

    8. Micro vs. Macro • MICROeconomics- • Study of small economic units such as individuals, firms, and industries (competitive markets, labor markets, personal decision making, etc.) • MACROeconomics- • Study of the large economy as a whole or in its basic subdivisions (National Economic Growth, Government Spending, Inflation, Unemployment, etc.)

    9. How is Economics used? Positive vs. Normative • Economists use the scientific method to make generalizations and abstractions to develop theories. This is called theoretical economics. • These theories are then applied to fix problems or meet economic goals. This is called policy economics. Positive Statements- Based on facts. Avoids value judgements (what is). Normative Statements- Includes value judgements (what ought to be).

    10. Thinking at the Margin Would you see the movie three times? Notice that the total benefit is more than the total cost but you would NOT watch the movie the 3rd time.

    11. Marginal Analysis In economics the term marginal = additional “Thinking on the margin”, or MARGINAL ANALYSIS involves making decisions based on the additional benefit vs. the additional cost. For Example: You have been shopping at the mall for a half hour, the additional benefit of shopping for an additional half-hour might outweigh the additional cost (the opportunity cost). After three hours, the additional benefit from staying an additional half-hour would likely be less than the additional cost.

    12. Marginal Analysis Notice that the decision making process wasn’t “should I go to the mall for 3 hours or should I stay home” In reality the decision making process started with “should I go to the mall at all.” Once you are there you thought “should I stay for an additional half hour or should I go.” The MARGINAL ANALYSIS approach to decision making is more comely used than the “all or nothing” approach.

    13. Marginal Analysis Notice that the decision making process wasn’t “should I go to the mall for 3 hours or should I stay home” You will continue to do something until the marginal cost outweighs the marginal benefit. In reality the decision making process was “should I go to the mall at all.” Once you are there you thought “should I stay for an additional half hour or should I go.” The MARGINAL ANALYSIS approach to decision making is more comely used than the “all or nothing” approach.

    14. 5 Key Economic Assumptions • Society’s wants are unlimited, but ALL resources are limited (scarcity). • Due to scarcity, choices must be made. Every choice has a cost (a trade-off). • Everyone’s goal is to make choices that maximize their satisfaction. Everyone acts in their own “self-interest.” • Everyone acts rationally by comparing the marginal costs and marginal benefits of every choice • Real-life situations can be explained and analyzed through simplified models and graphs.

    15. All Resources are Scarce! http://t2.gstatic.com/images?q=tbn:ANd9GcSQEPR3kvnQSsXYsFETIccr65vt1e7mMJG1Ki9NghtG2n954-sorkYyMWUz

    16. Life is about Scarcity! http://12serata.wordpress.com/tag/water-scarcity/

    17. Scarcity https://socialsciences.arts.unsw.edu.au/tsw/Cartoon08.jpg