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SAT score decay


As we all know SAT scores have been on the decline for years.
The following may be the reason why.

A math problem in the 60's
A logger sells a truckload of lumber for $100. His cost of production is four-fifths of this 
price. What is his profit?

A math problem in the 70's
A logger sells a truckload of lumber for $100. His cost of porduction is four-fifths of this 
price, or $80. What is his profit?

A math problem in the 70's using 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 $1. Make 100 dots representing the elements of set M. The set C of 
the cost of production contains 20 fewer points than set M, and answer the following question: 
What is the cardinality of the set P of profits?

A math problem in the 80's
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.

A math problem in the 90's under Outcome Based Education.
By cutting down beautiful forest trees, a logger makes $20. What do you think of this way of 
living? (Topic for class participation: How did the forest birds and squirrels feel?)


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