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The basic tool that economist use to analyze how changes in economic events, e.g., raising the drinking age, increasing the gasoline tax, affect the market for the impacted good or service. Each market is comprised of both producers, those offering (supplying) the good, and consumers, those who buy (demand) the good. These tutorials should assist you in better understanding Demand.

Below are a number of links to both white board presentations from the Khan Academy concerning Demand:

  • Law of Demand
  • Price of Related Products and Demand
  • Changes in Income, Population, or Preferences
  • Normal and Inferior Goods
  • Inferior Goods Clarification

  • and video lectures:

  • Introduction to the Supply and Demand Model
  • The Demand Curve
  • The Determinants of Demand
  • Changes in Demand and Shifts of the Demand Curve
  • Horizontal Addition