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Teaching math through the ages

Judith Conway - Breckenridge

Teaching math in 1950:

A logger sells a truckload of lumber for $100. His cost of production is four-fifths 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 four-fifths 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 $1. 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 the subset of set M and answer this 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 2000:

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 productiones S

Judith Conway

Breckenridge


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