<<Since when did public schools teach math?>>
They teach it. But it has "evolved" over time:
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 math): A logger sells a truckload of lumber for $100.
His cost of production is 4/5 of this price, 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 $1.
Make one hundred dots representing the elements of the set M. The set C
is a subset of M and its complement is the set P. Circle the elements
of the set P of profit.
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.
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 participation: How did the forest birds and squirrels
feel?)
2002: A logger sells a truckload of lumber for $100. His cost of
production is $120. How does Arthur Andersen determine that his profit
margin is $60?

 <<Since when did public schools teach math?>>

 They teach it. But it has "evolved" over time:

 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?

<S>
I stopped after 1960.
I think a fifth is a pretty good deal  especially if it's Scotch (Single Malt) <G>

PDQ


I went to Catholic school. You either learn or they beat it into you.
When I went to USMC Basic in 1966, a DI was screaming in my face.
I said, "You don't scare me. I went to Catholic school." I thought he was
going to bust a gut laughing. Basic was easier after that. Come to find
out, he went to Catholic school, too.
Steve
Can I guess that you went to Boot Camp in San Diego? I went to
PI in 68 and I can't imagine any drill instructor not beating your ass
for what you said. I never saw a DI so much as crack a smile while I
was there. [I'm not complaining I agree with the motto at the PI
rifle range 'The more we sweat in peace, the less we bleed in war.'
boot camp sucked for good reason.]
I did radiotelegraph school at San Diego & couldn't believe how
different boot camp looked out there. [and no the Marines didn't
have any telegraphs in 1968. But if they had, we could have used
them.<g>]
Jim
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