History of Mathematics Education
Posted on 2007-10-04 at 13:19
Teaching Math In 1957: 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 1967: 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 1977: A logger sells a truckload of lumber for $100. His cost of production is $80. Did he make a profit?
Teaching Math In 1987: 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 1997: 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.)
Teaching Math In 2007: Un ranchero vende una carretera de maderapara $100. El cuesto de la produccion era $80. Cuantos tortillas se puede comprar.