17 May

The evolution of math through the years

Date: Tue, 17 May 94 13:44:57 PDT To: Fun_People Subject: The evolution of math through the years Forwarded-by: bostic@vangogh.CS.Berkeley.EDU (Keith Bostic) Forwarded-by: "Miles O'Neal" <meo@pencom.com> From: Kelly James Clark at Calvin College in Michigan (clak@calvin.edu). The Math Quiz: In 1960: A logger sells a truckload of lumber for $100. His cost of production is four fifths the price. What is his profit? In 1970 (traditional math): A logger sells a truckload of lumber for $100. His cost of production is 4/5 of the price; in other words $80. What is his profit? In 1970 (new math): A logger exchanges set L of lumber for set M of money. The cardinality of set M is 100 and each element is worth $1. Make 100 dots representing the elements of set M. The set C of costs contains 20 fewer points than set M. Represent set C as a subset of set M, and answer the following question: What is the cardinality of the set P of profits? In 1980. A logger sells a truckload of wood for $100. His cost of production is $80 and his profit is $20. Your assignment: Underline the number 20. In 1990 (Outcome-Based Education): By cutting down beautiful forest trees, a logger makes $20. What do you think of this way of making a living? Topic for class discussion: How did the forest birds and squirrels feel?

© 1994 Peter Langston