This is a simulated progression of how teaching math has changed in the US over the last several decades.
Teaching Math In 1950
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A logger sells a truckload of lumber for $100. His cost of production is 4/5 of the price. What is his profit?
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Teaching Math In 1960
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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?
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Teaching Math In 1970
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A logger sells a truckload of lumber for $100. His cost of production is $80. Did he make a profit?
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Teaching Math In 1980
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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.
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Teaching Math In 1990
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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.)
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Teaching Math In 2005
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El hachero vende un camion cargado de madera por $100. El costo de production es..........
