Teaching Mathematics in the USA 1950 to now

1. Teaching Math: 1950s
A logger sells a truckload of lumber for $100. His cost of production is 4/5 of the sale price. What is his profit ?

2. Teaching Math: 1960s
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?

3. Teaching Math: 1970s
A logger sells a truckload of lumber for $100. His cost of production is $80. Did he make a profit?

4. Teaching Math: 1980s
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.

5. Teaching Math: 1990s
A logger cuts down a beautiful forest because he is selfish and inconsiderate and cares nothing for the habitat of animals or the preservation of our woodlands. He does this so he can make a profit of $20.. What do you think of this way of making a living? Extra topic for class participation after answering the question: How did the birds and squirrels feel as the logger cut down their homes? (There are no wrong answers, and if you feel like crying, it's OK.)

6. Teaching Math: 2013
Un hachero vende una carretada de maderapara $100. El costo de la producciones es $80. Cuanto dinero ha hecho?

 

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