www.piclist.com/techref/method/math.htm?key=math

Courtesy of Bbob:

Teaching Math in 1950:

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

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

Teaching Math in 1960:

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

production is 4/5 of the price, or $80. What is his profit?

Teaching Math in 1970: A logger exchanges a set "L" of

lumber for a set "M" of money. The cardinality of set "M" is

100. Each element is worth one dollar. Make 100 dots

representing the elements of the set "M." The set "C", the

cost of production contains 20 fewer points than set "M."

Represent the set "C" as a subset of set "M" and answer the

following question: What is the cardinality of the set "P" of

profits?

Teaching Math in 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.

Teaching Math in 1990:

By cutting down beautiful forest trees, the logger makes $20.

What do you think of this way of making a living? Topic for

class participation after answering the question: How did the

forest birds and squirrels "feel" as the logger cut down the

trees? There are no wrong answers.

Teaching Math in 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?

Teaching Math in 2010:

El hachero vende un camion carga por $100. La cuesta de

production es . . .

bb

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