Council for Economic Education
What's the Big Deal about Spices?
Today's gourmands don't consider spices to be the equivalent of silver and gold. During the middle ages, however, these commodities were precious. People back then used spices in religious ceremonies, to cure rotten food, and as a show...
Tutor2u
Tutor2u: Income Elasticity of Demand
This site provides a detailed study of income elasticity, which is how one's demand changes as income changes. It also gives good examples of normal and inferior goods.
Tutor2u
Tutor2u: Price Elasticity of Demand
An easy to understand description of "price elasticity of demand." Includes definitions, graphs, formulas, and examples of what kinds of goods may be elastic or inelastic.
Other
Economics of Health Care: Price Elasticity of Demand
This site provides a thorough analysis of the concept of elasticity, and uses an example in the health care industry.