Teaching Math

We spend a good chunk of time teaching math in homeschool. My Hero teaches geometry and algebra in the mornings before he goes to work. I know- I'm spoiled. I teach the third grader. Some days it is a less than pleasant experience. (That is sugar-coating it.) Even though our students do not think they are "math people", we have been pleased with their progress over the years.

Then I receive this email: The Evolution of Math. It makes me take up my task with new vigor.

Teaching Math In 1950:A logger sells a truck load of lumber for $100. His cost of production is4/5 of the price. What is his profit?

Teaching Math In 1960:A logger sells a truck load of lumber for $100. His cost of production is4/5 of the price, or $80. What is his profit?

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

Teaching Math In 1980:A logger sells a truck load of lumber for $100. His cost of production is$80 and his profit is $20. Your assignment: Underline the number 20.

Teaching Math In 1990: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 wood lands. He does this so he can make a profitof $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 hachero vende una carretad a de madera por $100. El costo de laproducciones es $80. Cuanto dinero ha hecho?