Unit 2 Lesson 3 Presentation

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Oakland Schools Economics Moodle Course, Unit II, Lesson 3.

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  • Arnold, Roger A. Economics In Our Time (Teacher's Edition). Grand Rapids: West Educational, 1999.
    McEachern, William A. Contemporary Economics. Mason, Ohio: Thomson South-Western, 2005.
  • Unit 2 Lesson 3 Presentation

    1. 1. The Basics of Supply
    2. 2. The Basics of Supply  Like demand, the word supply has a specific meaning in economics.  Supply refers to the willingness and ability of sellers to produce a good or service Willingness: a person wants or desires to produce and sell the good Ability: a person is capable of producing and selling the good
    3. 3. The Law of Supply  The law of supply-quantity supplied varies positively (or directly) with price, other things constant. Price = quantity supplied Price = quantity supplied
    4. 4. Why are price and quantity supplied positively (directly) related?  According to economists it is because of the Profit motive.  Producers are more willing and able to supply more goods at higher prices than at low prices because a higher price makes production more profitable Profit = Total Revenue – Total Cost
    5. 5. How We Look at Supply -- The Supply Schedule and Curve  A schedule is a table that lists the quantity of a good that a producer is willing to make at each price. This is the STORY.  The vertical axis ALWAYS shows price  The horizontal axis ALWAYS shows quantity supplied  Plot the points on the schedule  Connect the dots!!  The Supply curve slopes UP.  Now you have created a PICTURE OF THE STORY. S Q P
    6. 6. Movement Along a Supply Curve  A change in the price is a change in the quantity provided, other things constant.  This causes a movement along a supply curve.
    7. 7. Change in Quantity Supplied Price Quantity
    8. 8. On to … Determinants of Supply
    9. 9. DETERMINANTS OF SUPPLY Factors That Can Shift the Supply Curve: Changes in . . . – The cost of resources used to make the good – Technology used to make the good – Producers’ price expectations – Producers’ expectations of the costs of resources – The number of sellers in the market (competition)
    10. 10. Practice Problem #1 What would happen to the supply of pizza if more businesses enter the pizza market?  Determinant?  Increase or decrease in supply?
    11. 11. Answer to Practice Problem #1 What would happen to the supply of pizza if more businesses enter the pizza market?  Determinant – more sellers in the market place (competition)  Increase in supply
    12. 12. Practice Problem #2 What would happen to the supply of Nike shoes if there is an increase in the cost of rubber? Determinant? Increase or decrease in supply?
    13. 13. Answer to Practice Problem #2 What would happen to the supply of Nike shoes if there is an increase in the cost of rubber?  Determinant –The cost of resources used to make the good  Decrease in supply
    14. 14. Practice Problem #3 A new technology is invented that allows factories to produce energy drinks more efficiently.  Determinant?  Increase or decrease in supply?
    15. 15. Answer to Practice Problem #3 A new technology is invented that allows factories to produce energy drinks more efficiently.  Determinant – Improved technology used to make the good  Increase in supply
    16. 16. Practice Problem # 4 A company that makes video games pays their workers the minimum wage. The government passes a law that increases the minimum wage businesses can pay workers.  Determinant?  Increase or decrease in supply?
    17. 17. Practice Problem # 4 A company that makes video games pays their workers the minimum wage. The government passes a law that increases the minimum wage businesses can pay workers.  Determinant – the cost of resources to make the goods  Decrease in supply of video games
    18. 18. Practice Problem # 5 A computer company finds out a competitor is planning to sell a new and improved type of computer. Determinant? Increase or decrease in supply?
    19. 19. Answer to Practice Problem # 5 A computer company finds out a competitor is planning to sell a new and improved type of computer. Determinant – technology or producers’ price expectations Increase in supply now because competition will likely lower prices later
    20. 20. Movement Along a Supply Curve Versus a Shift of the Curve  Remember there is a difference between quantity supplied (Qs) and supply (S).  Markets never stand still, there are always outside factors that change the actual price of the good or how much is supplied altogether.  A change in price creates a change in the quantity supplied (Qs), other things constant. – This causes a movement along the supply curve.  A change in one of the determinants of supply causes a change in supply (S). – This causes in a shift of the supply curve.
    21. 21. Determinants of increased supply change the story….. How so? Quantity supplied of pizza per week (by millions) Price of pizza 15 $3.00 20 $6.00 25 $9.00 30 $12.00 35 $15.00 --- $0.00 Quantity supplied of pizza per week (by millions) Price of pizza 9 $3.00 14 $6.00 19 $9.00 25 $12.00 30 $15.00 --- $0.00 Original Story New Story
    22. 22. How would determinants of increased supply change the picture of supply? S1 8 14 20 26 32 Millions of pizzas per week $15 12 9 6 3 0 Priceperpizza
    23. 23. 8 14 20 26 32 Millions of pizzas per week $15 12 9 6 3 0 Priceperpizza How would determinants of increased supply change the picture of supply? S1 S2

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