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Tuesday, December 25, 2012
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Topics for Discussion and Exploration: MathArguments180.com
UVM Math Contest Questions at mathcontest.blogspot.com
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About Me
- Curmudgeon
- I'm a high-school math teacher completely frustrated with new math, reform math, fuzzy math, the color of math, talking about math, literacy across the curriculum and all those other things that get in the way of students actually learning math, not to mention the ever-present "You need to help raise our scores by taking one day a week to go over test-taking skills" and other administrative folderol. (He/Him/Mr.)
I teach my kids to solve problems like these using rectangles. I wrote about it here: http://fawnnguyen.com/2012/12/26/20121226.aspx
ReplyDeleteThank you!
I figured 15 days. The 12 painters got 6 days of work done, which left 12 days' worth of work left, but then they had 4/3 the labor hours after that, so that would cut the remaining days needed to 9 hours; 9 + 6 = 15 ... ?
ReplyDelete4/3 the workforce, I mean, so that 12/(4/3) = 9 . Gah.
ReplyDelete