From: Geoff Ruth (gruth@leadershiphigh.org)
Date: Mon Mar 17 2003 - 15:31:06 PST
Message-Id: <p05200f00ba9c0a8787c5@[192.168.1.25]> Date: Mon, 17 Mar 2003 15:31:06 -0800 From: Geoff Ruth <gruth@leadershiphigh.org> Subject: Re: pinhole Inter-disciplinary geometry
Bridging off of John's suggestion, any sort of activity using
triangulation would also be geometrically real-world. Using 2 or 3
sets of compass data to find a specific location on a map is an
application of geometry that's saved my pants before!
>Hi Jhumki,
>
>A natural for geometry is finding the location of an earthquake
>based on the distance
>to three stations. For local earthquakes, the distance is
>approximately 8 km for each
>second of time lapse between the P (fastest wave) and the S (slower) wave.
>
>For earthquake educational resources, check out the IRIS site:
>http://www.iris.washington.edu/edu/resources.htm
>
>and also Larry Braile's site:
>http://www.eas.purdue.edu/~braile/
>
>If you want the students to burn off a bit of energy and really
>learn about the S-P
>earthquake-location method, then you might try Larry's "Walk-Run
>Activity" here:
>http://www.eas.purdue.edu/~braile/edumod/walkrun/walkrun.htm
>
>For another exercise, how about computing the travel time versus distance on
>an "Earth" with constant velocity all the way from the crust to the
>core. How does
>this compare with the travel times actually observed for seismic
>waves and what
>does this say about how the velocity of the Earth actually does change with
>depth?
>See: http://www.eas.purdue.edu/~braile/edumod/constvel/constvel.htm
>
>Cheers,
>John
>
>At 06:59 AM 3/15/2003, you wrote:
>>To follow up on Charlotte's question, do you have recommendations
>>for curricula and lessons that link geometry with art,
>>architecture, astronomy, buiding/engineering, mechanics, biology,
>>fractals ... and anything else?
>>
>>Do any of you do this on your classes?
>>
>>The goal is to motivate geometry through interesting, real
>>problems. So any suggestions would be most helpful.
>>
>>Thanks,
>>Jhumki
>>
>>
>>
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