Lesson Plan - Demand and Supply




I. Demand Defined

- definition
- the law of demand (as P increases => Qd decreases)
- Why?
- substitution effect
- income effect
- absolute vs. relative price for the law of demand
- market demand
- class example

II. Other influences on Demand (besides the good's own price)

- tastes and preferences
- income
- normal goods
- inferior goods
- the price of related goods
- substitutes in consumption
- complements in consumption
- the number of demanders (buyers) in a market
- expectations about the future


III. Change in Demand (D) vs. change in Quantity Demanded (Qd)

- why does this matter?


IV. Supply Defined

- definition
- the law of supply (as P increases => Qs increases)
- Why?
- absolute vs. relative price for the law of supply
- market supply


V. Other influences on Supply (besides the good's own price)

- costs of production
- technology
- input prices
- the price of related goods
- substitutes in production
- complements in production
- the number of suppliers (firms) in a market
- expectations about the future


VI. Change in Supply (S) vs. change in Quantity Supplied (Qs)

- why does this matter?


VII. Demand and Supply as flow variables (vs. stock variables)

- what is a flow variable?
- what is a stock variable?
- examples.
- D & S as flows