you have the math and education definitions down perfect. I got lost with the new math.

Jan

rudy wrote:

Did you ever sit next to me on the sub-editors' table
in the days of hot metal?

a longstanding dream of mine, alas, still unfulfilled

it's funny, i had a similar conversation recently elsewhere
(about errors in english usage and spelling)

here's what i wrote --

the reason i am able to catch so many spelling and grammar errors is
because i received my public school primary grade education in the 1950's,
when they actually taught you spelling and grammar

it's kind of like the following similar situation with regard to math:

THE EVOLUTION OF A MATH PROBLEM

1950:  A logger sells a truckload of lumber for $100. His cost of production
is four-fifths of this price. What is his profit?

1960:  (traditional math) A logger sells a truckload of lumber for $100. His
cost of production is four-fifths 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 M is 100 and each element of M is worth $1. Make 100 dots
representing the elements of M. The set C is a subset of the set M, of
cardinality 80. What is the cardinality of the set P of profits, if P is the
difference set M\C?

1980:  A logger sells a truckload of lumber for $100. His cost of production
is $80, and his profit is $20. Your assignment: Underline the number 20.

1990:  By cutting down beautiful forest trees, a logger person makes $20.
What do you think of this way of making a living? In your group, discuss how
the forest birds and squirrels feel, and write an essay about it.



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