>> >>THE EVOLUTION OF THE MATH PROBLEM

>> >>

>> >>1960: A logger sells a truckload of lumber for $100. His cost of

>> >>production is 4/5 of this price. What is his profit?

>> >>

>> >>1970: (Traditional) A logger sells a truckload of lumber for

>> >>$100. His cost of production is 4/5 of this price, or in other

>> >>words, $80. What is his profit?

>> >>

>> >>1970: (New Math) A logger exchanges a set L of lumber for a set

>> >>M of money. The cardinality of set M is 100 and each element is

>> >>worth a dollar. Make a square array of 100 dots to represent the

>> >>elements of set M. The set C of the cost of production contains

>> >>20 fewer elements than set M. Represent the set C as a subset of

>> >>set K and answer the following question: What is the cardinality

>> >>of set P of profits?

>> >>

>> >>1980: A logger sells a truckload of lumber for $100. His cost

>> >>of production is $80 and his profit is $20. Your assignment is

>> >>to underline the number 20.

>> >>

>> >>1990: (Outcomes-based destreamed integrated Math) By cutting

>> >>down beautiful forest of trees, an environmentally ignorant logger

>> >>makes a profit of $20. What do you think of this way of making a

>> >>living? In your group, use role play to determine how the forest

>> >>birds and squirrels feel.

>> >>