Demand and supply curves

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Markets and the concept of effective demand

This brief introduction to unit 2 defines what a market is and clarifying the concept of effective vs nominal demand.

Constructing individual and market demand curves

This video uses a very simple example of two individuals to show how market demand is calculated and graphed.

Why and how the demand curve shifts

This video explains why and how the demand curve shifts.

Graphing changes in supply

This video teaches you how to correctly graph an increase or decrease in supply.

Extension and contraction in supply

This video teaches you how to draw an extension and contraction in supply.

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