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Topic: Real World Mathematics
Replies: 5   Last Post: Nov 27, 1995 9:20 PM

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youngml@PLU.edu

Posts: 2
Registered: 12/6/04
Real World Mathematics
Posted: Nov 27, 1995 2:05 PM
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The other day a friend called me up and asked me to help him figure out a
"formula" to use to find the diameter of an attachment for a
carbite tool he has. He's a machinist. If you can imagine this, he had an
equilateral triangle and he only knew the height of the triangle. He
needed to know the diameter of the circle that fit inside of the triangle
so he could order the correct part to fit with the tool.

I didn't think that there was a pre-made formula to figure this out so I
used knowledge of geometry and trigonometry to find the diameter. As a
prospective math teacher I was so excited to see my mathematical
knowledge put to the test. This was not a textbook problem, but one that
was a real world application problem that could easily be used in a 3rd
or 4th year algebra/trig class. The comment I made to my friend was that
I could tell my students there are lots of applications of mathematics in
the real world if we open our eyes to the possibilities.

Martina Young
youngml@plu.edu





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