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Q&A #192

Teachers' Lounge Discussion: Photography and math

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From: Michael Wathen <michael.wathen@mathteachtech.com>
To: Teacher2Teacher Public Discussion
Date: 2002030414:35:41
Subject: Aerial Photography and Proportional Reasoning

	
I use internet photos regularly in my class room to provide a rich
understanding of proportion.  Here's and example, below is a photo
(high altitude)of my home town. 

http://www.mathteachtech.com/portfolio/SpaceCincinnati1.jpg

Can you figure out the distance on the ground from the left side of
the picture to the right side?  What could give you the clue?  The
runway in the picture is about 10,000 feet long?

Was this picture taken from a satellite or from a high altitude plane?

Can you figure out the height from the ground?  Assume the camera is a
35 mm lense with a 50mm focal length.

Michael Wathen

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