Sunday, September 23, 2007

this is what i have time to post

(ie, random crap i find on my hard drive...)

As we all know SAT scores have been on the decline for years. The following may be the reason why...

A math problem in the 60's
A logger sells a truckload of lumber for $100. His cost of production is four-fifths of this price. What is his profit?

A math problem in the 70's
A logger sells a truckload of lumber for $100. His cost of production is four-fifths of this price, or $80. What is his profit?

A math problem in the 70's using New Math
A logger exchanges a set L of lumber for a set M of money. The cardinality of set M is 100, and each element is worth $1. Make 100 dots representing the elements of set M. The set C of the cost of production contains 20 fewer points than set M, and answer the following question: What is the cardinality of the set P of profits?

A math problem in the 80's
A logger sells a truckload of wood for $100. His cost of production is $80, and his profit is $20. Your assignment: underline the number 20.

A math problem in the 90's under Outcome Based Education.
By cutting down beautiful forest trees, a logger makes $20. What do you think of this way of living? (Topic for class participation: How did the forest birds and squirrels feel?)

2 Comments:

At Sun Sep 23, 10:50:00 AM PDT, Blogger Alan said...

I have seen this one before. In the previously seen edition, there was one more entry.

Teaching Math In 2005

Un hachero vende una carretada de madera para $100. El costo de
la produccisn es $80

 
At Sun Sep 23, 01:31:00 PM PDT, Blogger Irma said...

I hope your busy-ness is a good kind of busy. I'm still patiently waiting for a post with paragraphs!

 

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