Update: In Michela's rush to post this absolutely fabulous gem, she (me) failed to properly credit the source, a fellow blogger whose site is http://animatematters.blogspot.com. This fellow blogger properly names his ultimate source... Must love Gore-bee's internet; through this guy's post about that guy's post about another person's post, you know just about all there is to know just by visiting MediaWatchblog.com!!! Teaching Math In the fifties: 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 the sixties: 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 the seventies: A logger sells a truckload of lumber for $100. His cost of production is $80. Did he make a profit? Teaching Math In the eighties: 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 the nineties: 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 madera para $100. El cuesto de la produccion era $80. Cuantos tortillas se puede comprar?