The evolution in teaching math since the 1050's

The evolution in teaching math since the 1950s......

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>> Teaching Math In the 1950s

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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 the 1960s

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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 the 1970s

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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 the 1980s

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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 the 1990s

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>> 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? 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.)

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>> Teaching Math In the 2000s

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>> Un ranchero vende una carretera de madera para $100. El cuesto de la

>> produccion era $80. Cuantos tortillas se puede comprar?