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Activity: Strings
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Go to: http://www.svgs.k12.va.us/.../Strings.html (opens a new window)
Description: Simulates the problem of the probability of n loops forming if the ends of 4 strings are tied together. Students see a "bag" with 8 string ends randomly dispersed. Clicking on two ends ties them together. When all the ends have been joined, the bag reveals the number of loops that were formed. Students calculate the probability of n loops forming and determine the expected value.
Technology Type: Flash 
Author: Ralph Irons (Surfin' Sinefeld)
Language: English 
Cost: Does not require payment for use

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Courses: Math 6 Probability
Math 7 Probability
Probability & Statistics Probability

  _Flix
Comment:This tool illustrates an advanced topic through a basic example. The interactions and idea are well implimented, but the activity is loosely defined.